{@code Class} has no public constructor. Instead a {@code Class} * object is constructed automatically by the Java Virtual Machine when * a class is derived from the bytes of a {@code class} file through * the invocation of one of the following methods: *
The methods of class {@code Class} expose many characteristics of a * class or interface. Most characteristics are derived from the {@code class} * file that the class loader passed to the Java Virtual Machine. A few * characteristics are determined by the class loading environment at run time. * *
The following example uses a {@code Class} object to print the * class name of an object: * *
* void printClassName(Object obj) {
* System.out.println("The class of " + obj +
* " is " + obj.getClass().getName());
* }
* * {@code System.out.println("The name of class Foo is: "+Foo.class.getName());} ** *
Some methods of class {@code Class} expose whether the declaration of * a class or interface in Java source code was enclosed within * another declaration. Other methods describe how a class or interface * is situated in a nest. A nest is a set of * classes and interfaces, in the same run-time package, that * allow mutual access to their {@code private} members. * The classes and interfaces are known as nestmates. * One nestmate acts as the * nest host, and enumerates the other nestmates which * belong to the nest; each of them in turn records it as the nest host. * The classes and interfaces which belong to a nest, including its host, are * determined when * {@code class} files are generated, for example, a Java compiler * will typically record a top-level class as the host of a nest where the * other members are the classes and interfaces whose declarations are * enclosed within the top-level class declaration. * *
Some methods of class {@code Class} expose whether the declaration of
* a class or interface in Java source code was enclosed within
* another declaration. Other methods describe how a class or interface
* is situated in a nest. A nest is a set of
* classes and interfaces, in the same run-time package, that
* allow mutual access to their {@code private} members.
* The classes and interfaces are known as nestmates.
* One nestmate acts as the
* nest host, and enumerates the other nestmates which
* belong to the nest; each of them in turn records it as the nest host.
* The classes and interfaces which belong to a nest, including its host, are
* determined when
* {@code class} files are generated, for example, a Java compiler
* will typically record a top-level class as the host of a nest where the
* other members are the classes and interfaces whose declarations are
* enclosed within the top-level class declaration.
*
* @param Note that since information about the runtime representation
* of a type is being generated, modifiers not present on the
* originating source code or illegal on the originating source
* code may be present.
*
* @return a string describing this {@code Class}, including
* information about modifiers and type parameters
*
* @since 1.8
*/
public String toGenericString() {
if (isPrimitive()) {
return toString();
} else {
StringBuilder sb = new StringBuilder();
Class component = this;
int arrayDepth = 0;
if (isArray()) {
do {
arrayDepth++;
component = component.getComponentType();
} while (component.isArray());
sb.append(component.getName());
} else {
// Class modifiers are a superset of interface modifiers
int modifiers = getModifiers() & Modifier.classModifiers();
if (modifiers != 0) {
sb.append(Modifier.toString(modifiers));
sb.append(' ');
}
if (isAnnotation()) {
sb.append('@');
}
if (isInterface()) { // Note: all annotation interfaces are interfaces
sb.append("interface");
} else {
if (isEnum())
sb.append("enum");
else if (isRecord())
sb.append("record");
else
sb.append("class");
}
sb.append(' ');
sb.append(getName());
}
TypeVariable[] typeparms = component.getTypeParameters();
if (typeparms.length > 0) {
// Android-changed: Don't print the generic string of inner types on Android 14 or
// lower due to app compatibility.
if (VMRuntime.getSdkVersion() >= VersionCodes.VANILLA_ICE_CREAM) {
sb.append(Arrays.stream(typeparms)
.map(Class::typeVarBounds)
.collect(Collectors.joining(",", "<", ">")));
} else {
StringJoiner sj = new StringJoiner(",", "<", ">");
for(TypeVariable typeparm: typeparms) {
sj.add(typeparm.getTypeName());
}
sb.append(sj.toString());
}
}
if (arrayDepth > 0) sb.append("[]".repeat(arrayDepth));
return sb.toString();
}
}
static String typeVarBounds(TypeVariable typeVar) {
Type[] bounds = typeVar.getBounds();
if (bounds.length == 1 && bounds[0].equals(Object.class)) {
return typeVar.getName();
} else {
return typeVar.getName() + " extends " +
Arrays.stream(bounds)
.map(Type::getTypeName)
.collect(Collectors.joining(" & "));
}
}
/**
* Returns the {@code Class} object associated with the class or
* interface with the given string name. Invoking this method is
* equivalent to:
*
* For example, the following code fragment returns the
* runtime {@code Class} descriptor for the class named
* {@code java.lang.Thread}:
*
*
* A call to {@code forName("X")} causes the class named
* {@code X} to be initialized.
*
* @param className the fully qualified name of the desired class.
* @return the {@code Class} object for the class with the
* specified name.
* @throws LinkageError if the linkage fails
* @throws ExceptionInInitializerError if the initialization provoked
* by this method fails
* @throws ClassNotFoundException if the class cannot be located
*
* @jls 12.2 Loading of Classes and Interfaces
* @jls 12.3 Linking of Classes and Interfaces
* @jls 12.4 Initialization of Classes and Interfaces
*/
@CallerSensitive
public static Class forName(String className)
throws ClassNotFoundException {
Class caller = Reflection.getCallerClass();
return forName(className, true, ClassLoader.getClassLoader(caller));
}
// Android-changed: Remove SecurityException javadoc.
/**
* Returns the {@code Class} object associated with the class or
* interface with the given string name, using the given class loader.
* Given the fully qualified name for a class or interface (in the same
* format returned by {@code getName}) this method attempts to
* locate and load the class or interface. The specified class
* loader is used to load the class or interface. If the parameter
* {@code loader} is null, the class is loaded through the bootstrap
* class loader. The class is initialized only if the
* {@code initialize} parameter is {@code true} and if it has
* not been initialized earlier.
*
* If {@code name} denotes a primitive type or void, an attempt
* will be made to locate a user-defined class in the unnamed package whose
* name is {@code name}. Therefore, this method cannot be used to
* obtain any of the {@code Class} objects representing primitive
* types or void.
*
* If {@code name} denotes an array class, the component type of
* the array class is loaded but not initialized.
*
* For example, in an instance method the expression:
*
* This method attempts to locate and load the class or interface.
* It does not link the class, and does not run the class initializer.
* If the class is not found, this method returns {@code null}. If the class loader of the given module defines other modules and
* the given name is a class defined in a different module, this method
* returns {@code null} after the class is loaded. This method does not check whether the requested class is
* accessible to its caller. The call
*
* Specifically, if this {@code Class} object represents a
* declared class, this method returns {@code true} if the specified
* {@code Object} argument is an instance of the represented class (or
* of any of its subclasses); it returns {@code false} otherwise. If
* this {@code Class} object represents an array class, this method
* returns {@code true} if the specified {@code Object} argument
* can be converted to an object of the array class by an identity
* conversion or by a widening reference conversion; it returns
* {@code false} otherwise. If this {@code Class} object
* represents an interface, this method returns {@code true} if the
* class or any superclass of the specified {@code Object} argument
* implements this interface; it returns {@code false} otherwise. If
* this {@code Class} object represents a primitive type, this method
* returns {@code false}.
*
* @param obj the object to check
* @return true if {@code obj} is an instance of this class
*
* @since 1.1
*/
@IntrinsicCandidate
// Android-changed: JNI code can be replaced by simple java code.
// public native boolean isInstance(Object obj);
public boolean isInstance(Object obj) {
if (obj == null) {
return false;
}
return isAssignableFrom(obj.getClass());
}
/**
* Determines if the class or interface represented by this
* {@code Class} object is either the same as, or is a superclass or
* superinterface of, the class or interface represented by the specified
* {@code Class} parameter. It returns {@code true} if so;
* otherwise it returns {@code false}. If this {@code Class}
* object represents a primitive type, this method returns
* {@code true} if the specified {@code Class} parameter is
* exactly this {@code Class} object; otherwise it returns
* {@code false}.
*
* Specifically, this method tests whether the type represented by the
* specified {@code Class} parameter can be converted to the type
* represented by this {@code Class} object via an identity conversion
* or via a widening reference conversion. See The Java Language
* Specification, sections {@jls 5.1.1} and {@jls 5.1.4},
* for details.
*
* @param cls the {@code Class} object to be checked
* @return the {@code boolean} value indicating whether objects of the
* type {@code cls} can be assigned to objects of this class
* @throws NullPointerException if the specified Class parameter is
* null.
* @since 1.1
*/
@IntrinsicCandidate
// Android-changed: JNI code can be replaced by simple java code.
// public native boolean isAssignableFrom(Class cls);
public boolean isAssignableFrom(Class cls) {
if (this == cls) {
return true; // Can always assign to things of the same type.
} else if (this == Object.class) {
return !cls.isPrimitive(); // Can assign any reference to java.lang.Object.
} else if (isArray()) {
return cls.isArray() && componentType.isAssignableFrom(cls.componentType);
} else if (isInterface()) {
// Search iftable which has a flattened and uniqued list of interfaces.
Object[] iftable = cls.ifTable;
if (iftable != null) {
for (int i = 0; i < iftable.length; i += 2) {
if (iftable[i] == this) {
return true;
}
}
}
return false;
} else {
if (!cls.isInterface()) {
for (cls = cls.superClass; cls != null; cls = cls.superClass) {
if (cls == this) {
return true;
}
}
}
return false;
}
}
/**
* Determines if this {@code Class} object represents an
* interface type.
*
* @return {@code true} if this {@code Class} object represents an interface;
* {@code false} otherwise.
*/
@IntrinsicCandidate
// Android-changed: JNI code can be replaced by simple java code.
// public native boolean isInterface();
public boolean isInterface() {
return (accessFlags & Modifier.INTERFACE) != 0;
}
/**
* Determines if this {@code Class} object represents an array class.
*
* @return {@code true} if this {@code Class} object represents an array class;
* {@code false} otherwise.
* @since 1.1
*/
@IntrinsicCandidate
// Android-changed: JNI code can be replaced by simple java code.
// public native boolean isArray();
public boolean isArray() {
return getComponentType() != null;
}
/**
* Determines if the specified {@code Class} object represents a
* primitive type.
*
* There are nine predefined {@code Class} objects to represent
* the eight primitive types and void. These are created by the Java
* Virtual Machine, and have the same names as the primitive types that
* they represent, namely {@code boolean}, {@code byte},
* {@code char}, {@code short}, {@code int},
* {@code long}, {@code float}, and {@code double}.
*
* These objects may only be accessed via the following public static
* final variables, and are the only {@code Class} objects for which
* this method returns {@code true}.
*
* @return true if and only if this class represents a primitive type
*
* @see java.lang.Boolean#TYPE
* @see java.lang.Character#TYPE
* @see java.lang.Byte#TYPE
* @see java.lang.Short#TYPE
* @see java.lang.Integer#TYPE
* @see java.lang.Long#TYPE
* @see java.lang.Float#TYPE
* @see java.lang.Double#TYPE
* @see java.lang.Void#TYPE
* @since 1.1
*/
@IntrinsicCandidate
// Android-changed: JNI code can be replaced by simple java code.
// public native boolean isPrimitive();
public boolean isPrimitive() {
return (primitiveType & 0xFFFF) != 0;
}
/**
* Indicates whether this {@code Class} or its parents override finalize.
*
* @return {@code true} if and if this class or its parents override
* finalize;
*
* @hide
*/
public boolean isFinalizable() {
return (getModifiers() & FINALIZABLE) != 0;
}
/**
* Returns true if this {@code Class} object represents an annotation
* interface. Note that if this method returns true, {@link #isInterface()}
* would also return true, as all annotation interfaces are also interfaces.
*
* @return {@code true} if this {@code Class} object represents an annotation
* interface; {@code false} otherwise
* @since 1.5
*/
public boolean isAnnotation() {
return (getModifiers() & ANNOTATION) != 0;
}
/**
*{@return {@code true} if and only if this class has the synthetic modifier
* bit set}
*
* @jls 13.1 The Form of a Binary
* @jvms 4.1 The {@code ClassFile} Structure
* @see Java
* programming language and JVM modeling in core reflection
* @since 1.5
*/
public boolean isSynthetic() {
return (getModifiers() & SYNTHETIC) != 0;
}
// Android-changed: Removed javadoc related to hidden classes.
/**
* Returns the name of the entity (class, interface, array class,
* primitive type, or void) represented by this {@code Class} object.
*
* If this {@code Class} object represents a class or interface,
* not an array class, then:
*
* If this {@code Class} object represents an array class, then
* the result is a string consisting of one or more '{@code [}' characters
* representing the depth of the array nesting, followed by the element
* type as encoded using the following table:
*
* If this {@code Class} object represents a primitive type or {@code void},
* then the result is a string with the same spelling as the Java language
* keyword which corresponds to the primitive type or {@code void}.
*
* Examples:
* If this {@code Class} object
* represents a primitive type or void, null is returned.
*
* @return the class loader that loaded the class or interface
* represented by this {@code Class} object.
* @see java.lang.ClassLoader
* @see SecurityManager#checkPermission
* @see java.lang.RuntimePermission
*/
// Android-changed: Remove unused annotation.
// @CallerSensitive
// @ForceInline // to ensure Reflection.getCallerClass optimization
public ClassLoader getClassLoader() {
if (isPrimitive()) {
return null;
}
// Android-note: The RI returns null in the case where Android returns BootClassLoader.
// Noted in http://b/111850480#comment3
return (classLoader == null) ? BootClassLoader.getInstance() : classLoader;
}
// Android-removed: Remove unsupported getModule().
/*
* Returns the module that this class or interface is a member of.
*
* If this class represents an array type then this method returns the
* {@code Module} for the element type. If this class represents a
* primitive type or void, then the {@code Module} object for the
* {@code java.base} module is returned.
*
* If this class is in an unnamed module then the {@linkplain
* ClassLoader#getUnnamedModule() unnamed} {@code Module} of the class
* loader for this class is returned.
*
* @return the module that this class or interface is a member of
*
* @since 9
* @spec JPMS
*
public Module getModule() {
return module;
}
// set by VM
private transient Module module;
// Set by VM
private transient Object classData;
// package-private
Object getClassData() {
return classData;
}
*/
/**
* Returns an array of {@code TypeVariable} objects that represent the
* type variables declared by the generic declaration represented by this
* {@code GenericDeclaration} object, in declaration order. Returns an
* array of length 0 if the underlying generic declaration declares no type
* variables.
*
* @return an array of {@code TypeVariable} objects that represent
* the type variables declared by this generic declaration
* @throws java.lang.reflect.GenericSignatureFormatError if the generic
* signature of this generic declaration does not conform to
* the format specified in section {@jvms 4.7.9} of
* The Java Virtual Machine Specification
* @since 1.5
*/
@Override
public synchronized TypeVariable If the superclass is a parameterized type, the {@code Type}
* object returned must accurately reflect the actual type
* arguments used in the source code. The parameterized type
* representing the superclass is created if it had not been
* created before. See the declaration of {@link
* java.lang.reflect.ParameterizedType ParameterizedType} for the
* semantics of the creation process for parameterized types. If
* this {@code Class} object represents either the {@code Object}
* class, an interface, a primitive type, or void, then null is
* returned. If this {@code Class} object represents an array class
* then the {@code Class} object representing the {@code Object} class is
* returned.
*
* @throws java.lang.reflect.GenericSignatureFormatError if the generic
* class signature does not conform to the format specified in
* section {@jvms 4.7.9} of The Java Virtual
* Machine Specification
* @throws TypeNotPresentException if the generic superclass
* refers to a non-existent type declaration
* @throws java.lang.reflect.MalformedParameterizedTypeException if the
* generic superclass refers to a parameterized type that cannot be
* instantiated for any reason
* @return the direct superclass of the class represented by this {@code Class} object
* @since 1.5
*/
public Type getGenericSuperclass() {
Type genericSuperclass = getSuperclass();
// This method is specified to return null for all cases where getSuperclass
// returns null, i.e, for primitives, interfaces, void and java.lang.Object.
if (genericSuperclass == null) {
return null;
}
String annotationSignature = getSignatureAttribute();
if (annotationSignature != null) {
GenericSignatureParser parser = new GenericSignatureParser(getClassLoader());
parser.parseForClass(this, annotationSignature);
genericSuperclass = parser.superclassType;
}
return Types.getType(genericSuperclass);
}
/**
* Gets the package of this class.
*
* If this class represents an array type, a primitive type or void,
* this method returns {@code null}.
*
* @return the package of this class.
* @revised 9
*/
public Package getPackage() {
// Android-changed: ART has a different JNI layer.
/*
if (isPrimitive() || isArray()) {
return null;
}
ClassLoader cl = getClassLoader0();
return cl != null ? cl.definePackage(this)
: BootLoader.definePackage(this);
*/
ClassLoader loader = getClassLoader();
if (loader != null) {
String packageName = getPackageName();
return packageName != null ? loader.getPackage(packageName) : null;
}
return null;
}
/**
* Returns the fully qualified package name.
*
* If this class is a top level class, then this method returns the fully
* qualified name of the package that the class is a member of, or the
* empty string if the class is in an unnamed package.
*
* If this class is a member class, then this method is equivalent to
* invoking {@code getPackageName()} on the {@linkplain #getEnclosingClass
* enclosing class}.
*
* If this class is a {@linkplain #isLocalClass local class} or an {@linkplain
* #isAnonymousClass() anonymous class}, then this method is equivalent to
* invoking {@code getPackageName()} on the {@linkplain #getDeclaringClass
* declaring class} of the {@linkplain #getEnclosingMethod enclosing method} or
* {@linkplain #getEnclosingConstructor enclosing constructor}.
*
* If this class represents an array type then this method returns the
* package name of the element type. If this class represents a primitive
* type or void then the package name "{@code java.lang}" is returned.
*
* @return the fully qualified package name
*
* @since 9
* @jls 6.7 Fully Qualified Names
*/
public String getPackageName() {
// BEGIN Android-changed: Don't use a private field as a cache.
/*
String pn = this.packageName;
if (pn == null) {
Class c = isArray() ? elementType() : this;
if (c.isPrimitive()) {
pn = "java.lang";
} else {
String cn = c.getName();
int dot = cn.lastIndexOf('.');
pn = (dot != -1) ? cn.substring(0, dot).intern() : "";
}
this.packageName = pn;
}
return pn;
*/
Class c = this;
while (c.isArray()) {
c = c.getComponentType();
}
if (c.isPrimitive()) {
return "java.lang";
} else {
String cn = c.getName();
int dot = cn.lastIndexOf('.');
return (dot != -1) ? cn.substring(0, dot).intern() : "";
}
// END Android-changed: Don't use a private field as a cache.
}
// cached package name
// Android-removed: Don't use a private field as a cache.
// private transient String packageName;
/**
* Returns the interfaces directly implemented by the class or interface
* represented by this {@code Class} object.
*
* If this {@code Class} object represents a class, the return value is an array
* containing objects representing all interfaces directly implemented by
* the class. The order of the interface objects in the array corresponds
* to the order of the interface names in the {@code implements} clause of
* the declaration of the class represented by this {@code Class} object. For example,
* given the declaration:
* If this {@code Class} object represents an interface, the array contains objects
* representing all interfaces directly extended by the interface. The
* order of the interface objects in the array corresponds to the order of
* the interface names in the {@code extends} clause of the declaration of
* the interface represented by this {@code Class} object.
*
* If this {@code Class} object represents a class or interface that implements no
* interfaces, the method returns an array of length 0.
*
* If this {@code Class} object represents a primitive type or void, the method
* returns an array of length 0.
*
* If this {@code Class} object represents an array type, the
* interfaces {@code Cloneable} and {@code java.io.Serializable} are
* returned in that order.
*
* @return an array of interfaces directly implemented by this class
*/
public Class[] getInterfaces() {
// Android-changed: ART has a different implenmentation.
// return getInterfaces(true);
if (isArray()) {
return new Class[] { Cloneable.class, Serializable.class };
}
final Class[] ifaces = getInterfacesInternal();
if (ifaces == null) {
return EmptyArray.CLASS;
}
return ifaces;
}
// Android-revmoed: Remove unused getInterfaces(boolean) method.
/*
private Class[] getInterfaces(boolean cloneArray) {
ReflectionData If a superinterface is a parameterized type, the
* {@code Type} object returned for it must accurately reflect
* the actual type arguments used in the source code. The
* parameterized type representing each superinterface is created
* if it had not been created before. See the declaration of
* {@link java.lang.reflect.ParameterizedType ParameterizedType}
* for the semantics of the creation process for parameterized
* types.
*
* If this {@code Class} object represents a class, the return value is an array
* containing objects representing all interfaces directly implemented by
* the class. The order of the interface objects in the array corresponds
* to the order of the interface names in the {@code implements} clause of
* the declaration of the class represented by this {@code Class} object.
*
* If this {@code Class} object represents an interface, the array contains objects
* representing all interfaces directly extended by the interface. The
* order of the interface objects in the array corresponds to the order of
* the interface names in the {@code extends} clause of the declaration of
* the interface represented by this {@code Class} object.
*
* If this {@code Class} object represents a class or interface that implements no
* interfaces, the method returns an array of length 0.
*
* If this {@code Class} object represents a primitive type or void, the method
* returns an array of length 0.
*
* If this {@code Class} object represents an array type, the
* interfaces {@code Cloneable} and {@code java.io.Serializable} are
* returned in that order.
*
* @throws java.lang.reflect.GenericSignatureFormatError
* if the generic class signature does not conform to the
* format specified in section {@jvms 4.7.9} of The
* Java Virtual Machine Specification
* @throws TypeNotPresentException if any of the generic
* superinterfaces refers to a non-existent type declaration
* @throws java.lang.reflect.MalformedParameterizedTypeException
* if any of the generic superinterfaces refer to a parameterized
* type that cannot be instantiated for any reason
* @return an array of interfaces directly implemented by this class
* @since 1.5
*/
public Type[] getGenericInterfaces() {
Type[] result;
synchronized (Caches.genericInterfaces) {
result = Caches.genericInterfaces.get(this);
if (result == null) {
String annotationSignature = getSignatureAttribute();
if (annotationSignature == null) {
result = getInterfaces();
} else {
GenericSignatureParser parser = new GenericSignatureParser(getClassLoader());
parser.parseForClass(this, annotationSignature);
result = Types.getTypeArray(parser.interfaceTypes, false);
}
Caches.genericInterfaces.put(this, result);
}
}
return (result.length == 0) ? result : result.clone();
}
/**
* Returns the {@code Class} representing the component type of an
* array. If this class does not represent an array class this method
* returns null.
*
* @return the {@code Class} representing the component type of this
* class if this class is an array
* @see java.lang.reflect.Array
* @since 1.1
*/
public Class getComponentType() {
// Android-changed: Android can return componentType field directly.
/*
if (isArray()) {
return componentType;
} else {
return null;
}
*/
return componentType;
}
/*
* Returns the {@code Class} representing the element type of an array class.
* If this class does not represent an array class, then this method returns
* {@code null}.
*/
private Class elementType() {
if (!isArray()) return null;
Class c = this;
while (c.isArray()) {
c = c.getComponentType();
}
return c;
}
/**
* Returns the Java language modifiers for this class or interface, encoded
* in an integer. The modifiers consist of the Java Virtual Machine's
* constants for {@code public}, {@code protected},
* {@code private}, {@code final}, {@code static},
* {@code abstract} and {@code interface}; they should be decoded
* using the methods of class {@code Modifier}.
*
* If the underlying class is an array class, then its
* {@code public}, {@code private} and {@code protected}
* modifiers are the same as those of its component type. If this
* {@code Class} object represents a primitive type or void, its
* {@code public} modifier is always {@code true}, and its
* {@code protected} and {@code private} modifiers are always
* {@code false}. If this {@code Class} object represents an array class, a
* primitive type or void, then its {@code final} modifier is always
* {@code true} and its interface modifier is always
* {@code false}. The values of its other modifiers are not determined
* by this specification.
*
* The modifier encodings are defined in section {@jvms 4.1}
* of The Java Virtual Machine Specification.
*
* @return the {@code int} representing the modifiers for this class
* @see java.lang.reflect.Modifier
* @see Java
* programming language and JVM modeling in core reflection
* @since 1.1
* @jls 8.1.1 Class Modifiers
* @jls 9.1.1. Interface Modifiers
*/
@IntrinsicCandidate
// Android-changed: Android can use a simple java implementation.
// public native int getModifiers();
public int getModifiers() {
// Array classes inherit modifiers from their component types, but in the case of arrays
// of an inner class, the class file may contain "fake" access flags because it's not valid
// for a top-level class to private, say. The real access flags are stored in the InnerClass
// attribute, so we need to make sure we drill down to the inner class: the accessFlags
// field is not the value we want to return, and the synthesized array class does not itself
// have an InnerClass attribute. https://code.google.com/p/android/issues/detail?id=56267
if (isArray()) {
int componentModifiers = getComponentType().getModifiers();
if ((componentModifiers & Modifier.INTERFACE) != 0) {
componentModifiers &= ~(Modifier.INTERFACE | Modifier.STATIC);
}
return Modifier.ABSTRACT | Modifier.FINAL | componentModifiers;
}
int JAVA_FLAGS_MASK = 0xffff;
int modifiers = this.getInnerClassFlags(accessFlags & JAVA_FLAGS_MASK);
return modifiers & JAVA_FLAGS_MASK;
}
/**
* Gets the signers of this class.
*
* @return the signers of this class, or null if there are no signers. In
* particular, this method returns null if this {@code Class} object represents
* a primitive type or void.
* @since 1.1
*/
public Object[] getSigners() {
return null;
}
@FastNative
private native Method getEnclosingMethodNative();
/**
* If this {@code Class} object represents a local or anonymous
* class within a method, returns a {@link
* java.lang.reflect.Method Method} object representing the
* immediately enclosing method of the underlying class. Returns
* {@code null} otherwise.
*
* In particular, this method returns {@code null} if the underlying
* class is a local or anonymous class immediately enclosed by a class or
* interface declaration, instance initializer or static initializer.
*
* @return the immediately enclosing method of the underlying class, if
* that class is a local or anonymous class; otherwise {@code null}.
* @since 1.5
*/
// Android-changed: Removed SecurityException.
public Method getEnclosingMethod() {
if (classNameImpliesTopLevel()) {
return null;
}
/*
else {
if (!enclosingInfo.isMethod())
return null;
MethodRepository typeInfo = MethodRepository.make(enclosingInfo.getDescriptor(),
getFactory());
Class returnType = toClass(typeInfo.getReturnType());
Type [] parameterTypes = typeInfo.getParameterTypes();
Class[] parameterClasses = new Class[parameterTypes.length];
// Convert Types to Classes; returned types *should*
// be class objects since the methodDescriptor's used
// don't have generics information
for(int i = 0; i < parameterClasses.length; i++)
parameterClasses[i] = toClass(parameterTypes[i]);
// Perform access check
final Class enclosingCandidate = enclosingInfo.getEnclosingClass();
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
enclosingCandidate.checkMemberAccess(sm, Member.DECLARED,
Reflection.getCallerClass(), true);
}
Method[] candidates = enclosingCandidate.privateGetDeclaredMethods(false);
/*
* Loop over all declared methods; match method name,
* number of and type of parameters, *and* return
* type. Matching return type is also necessary
* because of covariant returns, etc.
*
ReflectionFactory fact = getReflectionFactory();
for (Method m : candidates) {
if (m.getName().equals(enclosingInfo.getName()) &&
arrayContentsEq(parameterClasses,
fact.getExecutableSharedParameterTypes(m))) {
// finally, check return type
if (m.getReturnType().equals(returnType)) {
return fact.copyMethod(m);
}
}
}
throw new InternalError("Enclosing method not found");
}
*/
return getEnclosingMethodNative();
}
// Android-removed: Remove unused getEnclosingMethodInfo().
/*
private native Object[] getEnclosingMethod0();
private EnclosingMethodInfo getEnclosingMethodInfo() {
Object[] enclosingInfo = getEnclosingMethod0();
if (enclosingInfo == null)
return null;
else {
return new EnclosingMethodInfo(enclosingInfo);
}
}
private static final class EnclosingMethodInfo {
private final Class enclosingClass;
private final String name;
private final String descriptor;
static void validate(Object[] enclosingInfo) {
if (enclosingInfo.length != 3)
throw new InternalError("Malformed enclosing method information");
try {
// The array is expected to have three elements:
// the immediately enclosing class
Class enclosingClass = (Class)enclosingInfo[0];
assert(enclosingClass != null);
// the immediately enclosing method or constructor's
// name (can be null).
String name = (String)enclosingInfo[1];
// the immediately enclosing method or constructor's
// descriptor (null iff name is).
String descriptor = (String)enclosingInfo[2];
assert((name != null && descriptor != null) || name == descriptor);
} catch (ClassCastException cce) {
throw new InternalError("Invalid type in enclosing method information", cce);
}
}
EnclosingMethodInfo(Object[] enclosingInfo) {
validate(enclosingInfo);
this.enclosingClass = (Class)enclosingInfo[0];
this.name = (String)enclosingInfo[1];
this.descriptor = (String)enclosingInfo[2];
}
boolean isPartial() {
return enclosingClass == null || name == null || descriptor == null;
}
boolean isConstructor() { return !isPartial() && " The simple name of an {@linkplain #isArray() array class} is the simple name of the
* component type with "[]" appended. In particular the simple
* name of an array class whose component type is anonymous is "[]".
*
* @return the simple name of the underlying class
* @since 1.5
*/
public String getSimpleName() {
// Android-changed: ART has a different JNI layer.
if (isArray())
return getComponentType().getSimpleName()+"[]";
return getSimpleNameNative();
}
/**
* Return an informative string for the name of this class or interface.
*
* @return an informative string for the name of this class or interface
* @since 1.8
*/
public String getTypeName() {
if (isArray()) {
try {
Class cl = this;
int dimensions = 0;
do {
dimensions++;
cl = cl.getComponentType();
} while (cl.isArray());
return cl.getName() + "[]".repeat(dimensions);
} catch (Throwable e) { /*FALLTHRU*/ }
}
return getName();
}
// Android-changed: Removed javadoc related to hidden classes.
/**
* Returns the canonical name of the underlying class as
* defined by The Java Language Specification.
* Returns {@code null} if the underlying class does not have a canonical
* name. Classes without canonical names include:
* If this {@code Class} object represents a class or interface with
* no accessible public fields, then this method returns an array of length
* 0.
*
* If this {@code Class} object represents a class, then this method
* returns the public fields of the class and of all its superclasses and
* superinterfaces.
*
* If this {@code Class} object represents an interface, then this
* method returns the fields of the interface and of all its
* superinterfaces.
*
* If this {@code Class} object represents an array type, a primitive
* type, or void, then this method returns an array of length 0.
*
* The elements in the returned array are not sorted and are not in any
* particular order.
*
* @return the array of {@code Field} objects representing the
* public fields
* @throws SecurityException
* If a security manager, s, is present and
* the caller's class loader is not the same as or an
* ancestor of the class loader for the current class and
* invocation of {@link SecurityManager#checkPackageAccess
* s.checkPackageAccess()} denies access to the package
* of this class.
*
* @since 1.1
* @jls 8.2 Class Members
* @jls 8.3 Field Declarations
*/
@CallerSensitive
public Field[] getFields() throws SecurityException {
// Android-changed: Removed SecurityManager check.
List If this {@code Class} object represents an array type, then the
* returned array has a {@code Method} object for each of the public
* methods inherited by the array type from {@code Object}. It does not
* contain a {@code Method} object for {@code clone()}.
*
* If this {@code Class} object represents an interface then the
* returned array does not contain any implicitly declared methods from
* {@code Object}. Therefore, if no methods are explicitly declared in
* this interface or any of its superinterfaces then the returned array
* has length 0. (Note that a {@code Class} object which represents a class
* always has public methods, inherited from {@code Object}.)
*
* The returned array never contains methods with names "{@code The elements in the returned array are not sorted and are not in any
* particular order.
*
* Generally, the result is computed as with the following 4 step algorithm.
* Let C be the class or interface represented by this {@code Class} object:
* The field to be reflected is determined by the algorithm that
* follows. Let C be the class or interface represented by this {@code Class} object:
*
* If this {@code Class} object represents an array type, then this
* method does not find the {@code length} field of the array type.
*
* @param name the field name
* @return the {@code Field} object of this class specified by
* {@code name}
* @throws NoSuchFieldException if a field with the specified name is
* not found.
* @throws NullPointerException if {@code name} is {@code null}
* @throws SecurityException
* If a security manager, s, is present and
* the caller's class loader is not the same as or an
* ancestor of the class loader for the current class and
* invocation of {@link SecurityManager#checkPackageAccess
* s.checkPackageAccess()} denies access to the package
* of this class.
*
* @since 1.1
* @jls 8.2 Class Members
* @jls 8.3 Field Declarations
*/
// Android-changed: Removed SecurityException.
@CallerSensitive
public Field getField(String name) throws NoSuchFieldException {
Objects.requireNonNull(name);
Field result = getPublicFieldRecursive(name);
if (result == null) {
throw new NoSuchFieldException(name);
}
return result;
}
/**
* The native implementation of the {@code getField} method.
*
* @throws NullPointerException
* if name is null.
* @see #getField(String)
*/
@FastNative
private native Field getPublicFieldRecursive(String name);
/**
* Returns a {@code Method} object that reflects the specified public
* member method of the class or interface represented by this
* {@code Class} object. The {@code name} parameter is a
* {@code String} specifying the simple name of the desired method. The
* {@code parameterTypes} parameter is an array of {@code Class}
* objects that identify the method's formal parameter types, in declared
* order. If {@code parameterTypes} is {@code null}, it is
* treated as if it were an empty array.
*
* If this {@code Class} object represents an array type, then this
* method finds any public method inherited by the array type from
* {@code Object} except method {@code clone()}.
*
* If this {@code Class} object represents an interface then this
* method does not find any implicitly declared method from
* {@code Object}. Therefore, if no methods are explicitly declared in
* this interface or any of its superinterfaces, then this method does not
* find any method.
*
* This method does not find any method with name "{@code Generally, the method to be reflected is determined by the 4 step
* algorithm that follows.
* Let C be the class or interface represented by this {@code Class} object:
* The constructor to reflect is the public constructor of the class
* represented by this {@code Class} object whose formal parameter
* types match those specified by {@code parameterTypes}.
*
* @param parameterTypes the parameter array
* @return the {@code Constructor} object of the public constructor that
* matches the specified {@code parameterTypes}
* @throws NoSuchMethodException if a matching method is not found.
* @throws SecurityException
* If a security manager, s, is present and
* the caller's class loader is not the same as or an
* ancestor of the class loader for the current class and
* invocation of {@link SecurityManager#checkPackageAccess
* s.checkPackageAccess()} denies access to the package
* of this class.
*
* @since 1.1
*/
public Constructor If this {@code Class} object represents a class or interface with no
* declared fields, then this method returns an array of length 0.
*
* If this {@code Class} object represents an array type, a primitive
* type, or void, then this method returns an array of length 0.
*
* The elements in the returned array are not sorted and are not in any
* particular order.
*
* @return the array of {@code Field} objects representing all the
* declared fields of this class
* @throws SecurityException
* If a security manager, s, is present and any of the
* following conditions is met:
*
* The components are returned in the same order that they are declared
* in the record header. The array is empty if this record class has no
* components. If the class is not a record class, that is {@link
* #isRecord()} returns {@code false}, then this method returns {@code null}.
* Conversely, if {@link #isRecord()} returns {@code true}, then this method
* returns a non-null value.
*
* @apiNote
* The following method can be used to find the record canonical constructor:
*
* If this {@code Class} object represents a class or interface that
* has multiple declared methods with the same name and parameter types,
* but different return types, then the returned array has a {@code Method}
* object for each such method.
*
* If this {@code Class} object represents a class or interface that
* has a class initialization method {@code If this {@code Class} object represents a class or interface with no
* declared methods, then the returned array has length 0.
*
* If this {@code Class} object represents an array type, a primitive
* type, or void, then the returned array has length 0.
*
* The elements in the returned array are not sorted and are not in any
* particular order.
*
* @return the array of {@code Method} objects representing all the
* declared methods of this class
* @throws SecurityException
* If a security manager, s, is present and any of the
* following conditions is met:
*
* See The Java Language Specification,
* section {@jls 8.2}.
*
* @return the array of {@code Constructor} objects representing all the
* declared constructors of this class
* @throws SecurityException
* If a security manager, s, is present and any of the
* following conditions is met:
*
* If this {@code Class} object represents an array type, then this
* method does not find the {@code length} field of the array type.
*
* @param name the name of the field
* @return the {@code Field} object for the specified field in this
* class
* @throws NoSuchFieldException if a field with the specified name is
* not found.
* @throws NullPointerException if {@code name} is {@code null}
* @throws SecurityException
* If a security manager, s, is present and any of the
* following conditions is met:
*
* If this {@code Class} object represents an array type, then this
* method does not find the {@code clone()} method.
*
* @param name the name of the method
* @param parameterTypes the parameter array
* @return the {@code Method} object for the method of this class
* matching the specified name and parameters
* @throws NoSuchMethodException if a matching method is not found.
* @throws NullPointerException if {@code name} is {@code null}
* @throws SecurityException
* If a security manager, s, is present and any of the
* following conditions is met:
*
* The rules for
* searching resources associated with a given class are implemented by the
* defining {@linkplain ClassLoader class loader} of the class. This method
* delegates to this {@code Class} object's class loader.
* If this {@code Class} object was loaded by the bootstrap class loader,
* the method delegates to {@link ClassLoader#getSystemResourceAsStream}.
*
* Before delegation, an absolute resource name is constructed from the
* given resource name using this algorithm:
*
* Where the {@code modified_package_name} is the package name of this
* object with {@code '/'} substituted for {@code '.'}
* ( The rules for
* searching resources associated with a given class are implemented by the
* defining {@linkplain ClassLoader class loader} of the class. This method
* delegates to this {@code Class} object's class loader.
* If this {@code Class} object was loaded by the bootstrap class loader,
* the method delegates to {@link ClassLoader#getSystemResource}.
*
* Before delegation, an absolute resource name is constructed from the
* given resource name using this algorithm:
*
* Where the {@code modified_package_name} is the package name of this
* object with {@code '/'} substituted for {@code '.'}
* ( Default policy: allow all clients access with normal Java access
* control.
*
* NOTE: should only be called if a SecurityManager is installed
*
private void checkMemberAccess(@SuppressWarnings("removal") SecurityManager sm, int which,
Class caller, boolean checkProxyInterfaces) {
*//* Default policy allows access to all {@link Member#PUBLIC} members,
* as well as access to classes that have the same class loader as the caller.
* In all other cases, it requires RuntimePermission("accessDeclaredMembers")
* permission.
*//*
final ClassLoader ccl = ClassLoader.getClassLoader(caller);
if (which != Member.PUBLIC) {
final ClassLoader cl = getClassLoader0();
if (ccl != cl) {
sm.checkPermission(SecurityConstants.CHECK_MEMBER_ACCESS_PERMISSION);
}
}
this.checkPackageAccess(sm, ccl, checkProxyInterfaces);
}
/*
* Checks if a client loaded in ClassLoader ccl is allowed to access this
* class under the current package access policy. If access is denied,
* throw a SecurityException.
*
* NOTE: this method should only be called if a SecurityManager is active
*
private void checkPackageAccess(@SuppressWarnings("removal") SecurityManager sm, final ClassLoader ccl,
boolean checkProxyInterfaces) {
final ClassLoader cl = getClassLoader0();
if (ReflectUtil.needsPackageAccessCheck(ccl, cl)) {
String pkg = this.getPackageName();
if (!pkg.isEmpty()) {
// skip the package access check on a proxy class in default proxy package
if (!Proxy.isProxyClass(this) || ReflectUtil.isNonPublicProxyClass(this)) {
sm.checkPackageAccess(pkg);
}
}
}
// check package access on the proxy interfaces
if (checkProxyInterfaces && Proxy.isProxyClass(this)) {
ReflectUtil.checkProxyPackageAccess(ccl, this.getInterfaces());
}
}
*/
/*
* Checks if a client loaded in ClassLoader ccl is allowed to access the provided
* classes under the current package access policy. If access is denied,
* throw a SecurityException.
*
* NOTE: this method should only be called if a SecurityManager is active
* classes must be non-empty
* all classes provided must be loaded by the same ClassLoader
* NOTE: this method does not support Proxy classes
*//*
private static void checkPackageAccessForPermittedSubclasses(@SuppressWarnings("removal") SecurityManager sm,
final ClassLoader ccl, Class[] subClasses) {
final ClassLoader cl = subClasses[0].getClassLoader0();
if (ReflectUtil.needsPackageAccessCheck(ccl, cl)) {
Set The {@linkplain #getSuperclass() direct superclass} of a record
* class is {@code java.lang.Record}. A record class is {@linkplain
* Modifier#FINAL final}. A record class has (possibly zero) record
* components; {@link #getRecordComponents()} returns a non-null but
* possibly empty value for a record.
*
* Note that class {@link Record} is not a record class and thus
* invoking this method on class {@code Record} returns {@code false}.
*
* @return true if and only if this class is a record class, otherwise false
* @jls 8.10 Record Classes
* @since 16
*/
public boolean isRecord() {
// this superclass and final modifier check is not strictly necessary
// they are intrinsified and serve as a fast-path check
return getSuperclass() == java.lang.Record.class &&
(this.getModifiers() & Modifier.FINAL) != 0 &&
isRecord0();
}
// Android-remvoed: Remove unsupported ReflectionFactory.
/*
// Fetches the factory for reflective objects
@SuppressWarnings("removal")
private static ReflectionFactory getReflectionFactory() {
if (reflectionFactory == null) {
reflectionFactory =
java.security.AccessController.doPrivileged
(new ReflectionFactory.GetReflectionFactoryAction());
}
return reflectionFactory;
}
private static ReflectionFactory reflectionFactory;
*/
/**
* Returns the elements of this enum class or null if this
* Class object does not represent an enum class.
*
* @return an array containing the values comprising the enum class
* represented by this {@code Class} object in the order they're
* declared, or null if this {@code Class} object does not
* represent an enum class
* @since 1.5
* @jls 8.9.1 Enum Constants
*/
public T[] getEnumConstants() {
T[] values = getEnumConstantsShared();
return (values != null) ? values.clone() : null;
}
// Android-changed: Made public/hidden instead of using sun.misc.SharedSecrets.
/**
* Returns the elements of this enum class or null if this
* Class object does not represent an enum class;
* identical to getEnumConstants except that the result is
* uncloned, cached, and shared by all callers.
* @hide
*/
public T[] getEnumConstantsShared() {
if (!isEnum()) return null;
return (T[]) Enum.getSharedConstants((Class) this);
}
/*
@SuppressWarnings("removal")
T[] getEnumConstantsShared() {
T[] constants = enumConstants;
if (constants == null) {
if (!isEnum()) return null;
try {
final Method values = getMethod("values");
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<>() {
public Void run() {
values.setAccessible(true);
return null;
}
});
@SuppressWarnings("unchecked")
T[] temporaryConstants = (T[])values.invoke(null);
enumConstants = constants = temporaryConstants;
}
// These can happen when users concoct enum-like classes
// that don't comply with the enum spec.
catch (InvocationTargetException | NoSuchMethodException |
IllegalAccessException ex) { return null; }
}
return constants;
}
private transient volatile T[] enumConstants;
*/
// Android-removed: Remove unused method.
/*
*//**
* Returns a map from simple name to enum constant. This package-private
* method is used internally by Enum to implement
* {@code public static This method is useful when a client needs to "narrow" the type of
* a {@code Class} object to pass it to an API that restricts the
* {@code Class} objects that it is willing to accept. A cast would
* generate a compile-time warning, as the correctness of the cast
* could not be checked at runtime (because generic types are implemented
* by erasure).
*
* @param the type to cast this {@code Class} object to
* @param clazz the class of the type to cast this {@code Class} object to
* @return this {@code Class} object, cast to represent a subclass of
* the specified class object.
* @throws ClassCastException if this {@code Class} object does not
* represent a subclass of the specified class (here "subclass" includes
* the class itself).
* @since 1.5
*/
@SuppressWarnings("unchecked")
public Class asSubclass(Class clazz) {
if (clazz.isAssignableFrom(this))
return (Class) this;
else
throw new ClassCastException(this.toString() +
" cannot be cast to " + clazz.getName());
}
/**
* {@inheritDoc}
* Note that any annotation returned by this method is a
* declaration annotation.
*
* @throws NullPointerException {@inheritDoc}
* @since 1.5
*/
@Override
@SuppressWarnings("unchecked")
public A getAnnotation(Class annotationClass) {
Objects.requireNonNull(annotationClass);
A annotation = getDeclaredAnnotation(annotationClass);
if (annotation != null) {
return annotation;
}
if (annotationClass.isDeclaredAnnotationPresent(Inherited.class)) {
for (Class sup = getSuperclass(); sup != null; sup = sup.getSuperclass()) {
annotation = sup.getDeclaredAnnotation(annotationClass);
if (annotation != null) {
return annotation;
}
}
}
return null;
}
/**
* {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
* @since 1.5
*/
@Override
public boolean isAnnotationPresent(Class annotationClass) {
if (annotationClass == null) {
throw new NullPointerException("annotationClass == null");
}
if (isDeclaredAnnotationPresent(annotationClass)) {
return true;
}
if (annotationClass.isDeclaredAnnotationPresent(Inherited.class)) {
for (Class sup = getSuperclass(); sup != null; sup = sup.getSuperclass()) {
if (sup.isDeclaredAnnotationPresent(annotationClass)) {
return true;
}
}
}
return false;
}
/**
* {@inheritDoc}
* Note that any annotations returned by this method are
* declaration annotations.
*
* @throws NullPointerException {@inheritDoc}
* @since 1.8
*/
@Override
public A[] getAnnotationsByType(Class annotationClass) {
// Find any associated annotations [directly or repeatably (indirectly) present on this].
A[] annotations = GenericDeclaration.super.getAnnotationsByType(annotationClass);
if (annotations.length != 0) {
return annotations;
}
// Nothing was found, attempt looking for associated annotations recursively up to the root
// class if and only if:
// * The annotation class was marked with @Inherited.
//
// Inherited annotations are not coalesced into a single set: the first declaration found is
// returned.
if (annotationClass.isDeclaredAnnotationPresent(Inherited.class)) {
Class superClass = getSuperclass(); // Returns null if klass's base is Object.
if (superClass != null) {
return superClass.getAnnotationsByType(annotationClass);
}
}
// Annotated was not marked with @Inherited, or no superclass.
return (A[]) Array.newInstance(annotationClass, 0); // Safe by construction.
}
/**
* {@inheritDoc}
* Note that any annotations returned by this method are
* declaration annotations.
*
* @throws NullPointerException {@inheritDoc}
* @since 1.8
*/
@Override
public A[] getDeclaredAnnotationsByType(Class annotationClass) {
Objects.requireNonNull(annotationClass);
// Android-changed: Altered method implementation for getDeclaredAnnotationsByType(Class).
// return AnnotationSupport.getDirectlyAndIndirectlyPresent(annotationData().declaredAnnotations,
// annotationClass);
return GenericDeclaration.super.getDeclaredAnnotationsByType(annotationClass);
}
/**
* {@inheritDoc}
* Note that any annotations returned by this method are
* declaration annotations.
*
* @since 1.5
*/
@Override
public Annotation[] getAnnotations() {
// Android-changed: ART reads annotations from dex files.
// return AnnotationParser.toArray(annotationData().annotations);
/*
* We need to get the annotations declared on this class, plus the
* annotations from superclasses that have the "@Inherited" annotation
* set. We create a temporary map to use while we accumulate the
* annotations and convert it to an array at the end.
*
* It's possible to have duplicates when annotations are inherited.
* We use a Map to filter those out.
*
* HashMap might be overkill here.
*/
HashMap Note that any annotation returned by this method is a
* declaration annotation.
*
* @throws NullPointerException {@inheritDoc}
* @since 1.5
*/
// Android-changed: Re-implement on top of ART.
/*
@SuppressWarnings("unchecked")
public A getDeclaredAnnotation(Class annotationClass) {
Objects.requireNonNull(annotationClass);
return (A) annotationData().declaredAnnotations.get(annotationClass);
}
*/
@Override
@FastNative
public native A getDeclaredAnnotation(Class annotationClass);
/**
* {@inheritDoc}
* Note that any annotations returned by this method are
* declaration annotations.
*
* @since 1.5
*/
/*
public Annotation[] getDeclaredAnnotations() {
return AnnotationParser.toArray(annotationData().declaredAnnotations);
}
*/
@Override
@FastNative
public native Annotation[] getDeclaredAnnotations();
// Android-removed: Remove unused fields and methods.
/*
// annotation data that might get invalidated when JVM TI RedefineClasses() is called
private static class AnnotationData {
final Map If this {@code Class} object represents a class whose declaration
* does not explicitly indicate an annotated superclass, then the return
* value is an {@code AnnotatedType} object representing an element with no
* annotations.
*
* If this {@code Class} represents either the {@code Object} class, an
* interface type, an array type, a primitive type, or void, the return
* value is {@code null}.
*
* @return an object representing the superclass
* @since 1.8
*//*
public AnnotatedType getAnnotatedSuperclass() {
if (this == Object.class ||
isInterface() ||
isArray() ||
isPrimitive() ||
this == Void.TYPE) {
return null;
}
return TypeAnnotationParser.buildAnnotatedSuperclass(getRawTypeAnnotations(), getConstantPool(), this);
}
* Returns an array of {@code AnnotatedType} objects that represent the use
* of types to specify superinterfaces of the entity represented by this
* {@code Class} object. (The use of type Foo to specify a
* superinterface in '... implements Foo' is distinct from the
* declaration of interface Foo.)
*
* If this {@code Class} object represents a class, the return value is
* an array containing objects representing the uses of interface types to
* specify interfaces implemented by the class. The order of the objects in
* the array corresponds to the order of the interface types used in the
* 'implements' clause of the declaration of this {@code Class} object.
*
* If this {@code Class} object represents an interface, the return
* value is an array containing objects representing the uses of interface
* types to specify interfaces directly extended by the interface. The
* order of the objects in the array corresponds to the order of the
* interface types used in the 'extends' clause of the declaration of this
* {@code Class} object.
*
* If this {@code Class} object represents a class or interface whose
* declaration does not explicitly indicate any annotated superinterfaces,
* the return value is an array of length 0.
*
* If this {@code Class} object represents either the {@code Object}
* class, an array type, a primitive type, or void, the return value is an
* array of length 0.
*
* @return an array representing the superinterfaces
* @since 1.8
*//*
public AnnotatedType[] getAnnotatedInterfaces() {
return TypeAnnotationParser.buildAnnotatedInterfaces(getRawTypeAnnotations(), getConstantPool(), this);
}
*/
/**
* Returns true if the annotation exists.
*/
@FastNative
private native boolean isDeclaredAnnotationPresent(Class annotationClass);
private String getSignatureAttribute() {
String[] annotation = getSignatureAnnotation();
if (annotation == null) {
return null;
}
StringBuilder result = new StringBuilder();
for (String s : annotation) {
result.append(s);
}
return result.toString();
}
@FastNative
private native String[] getSignatureAnnotation();
/**
* Is this a runtime created proxy class?
*
* @hide
*/
public boolean isProxy() {
return (accessFlags & 0x00040000) != 0;
}
/**
* @hide
*/
public int getAccessFlags() {
return accessFlags;
}
/**
* Returns the method if it is defined by this class; {@code null} otherwise. This may return a
* non-public member.
*
* @param name the method name
* @param args the method's parameter types
*/
@FastNative
private native Method getDeclaredMethodInternal(String name, Class[] args);
@FastNative
native ClassExt ensureExtDataPresent();
// Android-changed: Removed SecurityException.
/**
* Returns the nest host of the nest to which the class
* or interface represented by this {@code Class} object belongs.
* Every class and interface belongs to exactly one nest.
*
* If the nest host of this class or interface has previously
* been determined, then this method returns the nest host.
* If the nest host of this class or interface has
* not previously been determined, then this method determines the nest
* host using the algorithm of JVMS 5.4.4, and returns it.
*
* Often, a class or interface belongs to a nest consisting only of itself,
* in which case this method returns {@code this} to indicate that the class
* or interface is the nest host.
*
* If this {@code Class} object represents a primitive type, an array type,
* or {@code void}, then this method returns {@code this},
* indicating that the represented entity belongs to the nest consisting only of
* itself, and is the nest host.
*
* @return the nest host of this class or interface
* @since 11
* @jvms 4.7.28 The {@code NestHost} Attribute
* @jvms 4.7.29 The {@code NestMembers} Attribute
* @jvms 5.4.4 Access Control
*/
public Class getNestHost() {
// Android-removed: Android has a different JNI layer.
/*
if (isPrimitive() || isArray()) {
return this;
}
Class host = getNestHost0();
if (host == this) {
return this;
}
// returning a different class requires a security check
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkPackageAccess(sm,
ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
}
return host;
*/
if (isPrimitive() || isArray() || Void.TYPE.equals(this)) {
return this;
}
Class host = getNestHostFromAnnotation();
if (host == null) {
return this;
}
return (nestHostHasMember(host, this) ? host : this);
}
private static boolean nestHostHasMember(Class host, Class member) {
if (host.equals(member)) {
return true;
}
return nestMembersIncludeMember(host.getNestMembersFromAnnotation(), member);
}
private static boolean nestMembersIncludeMember(Class[] members, Class member) {
if (members == null) {
return false;
}
for (Class m : members) {
if (member.equals(m)) {
return true;
}
}
return false;
}
@FastNative
private native Class getNestHostFromAnnotation();
// Android-changed: This implementation comes from OpenJDK 17.
/**
* Determines if the given {@code Class} is a nestmate of the
* class or interface represented by this {@code Class} object.
* Two classes or interfaces are nestmates
* if they have the same {@linkplain #getNestHost() nest host}.
*
* @param c the class to check
* @return {@code true} if this class and {@code c} are members of
* the same nest; and {@code false} otherwise.
*
* @since 11
*/
public boolean isNestmateOf(Class c) {
if (this == c) {
return true;
}
if (isPrimitive() || isArray() ||
c.isPrimitive() || c.isArray()) {
return false;
}
return getNestHost() == c.getNestHost();
}
// Android-changed: Removed references to MethodHandles.Lookup#defineHiddenClass.
/**
* Returns an array containing {@code Class} objects representing all the
* classes and interfaces that are members of the nest to which the class
* or interface represented by this {@code Class} object belongs.
*
* First, this method obtains the {@linkplain #getNestHost() nest host},
* {@code H}, of the nest to which the class or interface represented by
* this {@code Class} object belongs. The zeroth element of the returned
* array is {@code H}.
*
* Then, for each class or interface {@code C} which is recorded by {@code H}
* as being a member of its nest, this method attempts to obtain the {@code Class}
* object for {@code C} (using {@linkplain #getClassLoader() the defining class
* loader} of the current {@code Class} object), and then obtains the
* {@linkplain #getNestHost() nest host} of the nest to which {@code C} belongs.
* The classes and interfaces which are recorded by {@code H} as being members
* of its nest, and for which {@code H} can be determined as their nest host,
* are indicated by subsequent elements of the returned array. The order of
* such elements is unspecified. Duplicates are permitted.
*
* If this {@code Class} object represents a primitive type, an array type,
* or {@code void}, then this method returns a single-element array containing
* {@code this}.
*
* @apiNote
* The returned array includes only the nest members recorded in the {@code NestMembers}
* attribute.
*
* @return an array of all classes and interfaces in the same nest as
* this class or interface
*
* @since 11
* @see #getNestHost()
* @jvms 4.7.28 The {@code NestHost} Attribute
* @jvms 4.7.29 The {@code NestMembers} Attribute
*/
public Class[] getNestMembers() {
// Android-changed: ART has a different JNI layer.
/*
if (isPrimitive() || isArray()) {
return new Class[] { this };
}
Class[] members = getNestMembers0();
// Can't actually enable this due to bootstrapping issues
// assert(members.length != 1 || members[0] == this); // expected invariant from VM
if (members.length > 1) {
// If we return anything other than the current class we need
// a security check
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkPackageAccess(sm,
ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
}
}
return members;
*/
if (isPrimitive() || isArray() || Void.TYPE.equals(this)) {
return new Class[] { this };
}
Class host = getNestHostFromAnnotation();
if (host != null && !host.equals(this)) {
if (host.isPrimitive() || host.isArray() || Void.TYPE.equals(host)) {
return new Class[] { this };
}
return host.getNestMembers(this);
}
return getNestMembers(this);
}
private Class[] getNestMembers(Class originatingMember) {
Class[] members = getNestMembersFromAnnotation();
if (members == null) {
return new Class[] { originatingMember };
}
if (originatingMember != this && !nestMembersIncludeMember(members, originatingMember)) {
return new Class[] { originatingMember };
}
Class[] result = new Class[members.length+1];
result[0] = this;
int idx = 1;
for (Class m : members) {
if (m == null || !this.equals(m.getNestHostFromAnnotation())) {
continue;
}
result[idx] = m;
++idx;
}
if (idx < result.length) {
Class[] tmp = new Class[idx];
for (int i = 0; i < tmp.length; ++i) {
tmp[i] = result[i];
}
result = tmp;
}
return result;
}
@FastNative
private native Class[] getNestMembersFromAnnotation();
private static class Caches {
/**
* Cache to avoid frequent recalculation of generic interfaces, which is generally uncommon.
* Sized sufficient to allow ConcurrentHashMapTest to run without recalculating its generic
* interfaces (required to avoid time outs). Validated by running reflection heavy code
* such as applications using Guice-like frameworks.
*/
private static final BasicLruCache If this {@code Class} object represents a class or interface,
* not an array class, then:
* If this {@code Class} object represents an array class, then
* the result is a string consisting of one or more '{@code [}' characters
* representing the depth of the array nesting, followed by the
* descriptor string of the element type.
* If this {@code Class} object represents a primitive type or
* {@code void}, then the result is a field descriptor string which
* is a one-letter code corresponding to a primitive type or {@code void}
* ({@code "B", "C", "D", "F", "I", "J", "S", "Z", "V"}) (JVMS {@jvms 4.3.2}).
*
* @apiNote
* This is not a strict inverse of {@link #forName};
* distinct classes which share a common name but have different class loaders
* will have identical descriptor strings.
*
* @return the descriptor string for this {@code Class} object
* @jvms 4.3.2 Field Descriptors
* @since 12
*/
@Override
public String descriptorString() {
if (isPrimitive())
return Wrapper.forPrimitiveType(this).basicTypeString();
if (isArray()) {
return "[" + componentType.descriptorString();
} else if (isHidden()) {
String name = getName();
int index = name.indexOf('/');
return new StringBuilder(name.length() + 2)
.append('L')
.append(name.substring(0, index).replace('.', '/'))
.append('.')
.append(name, index + 1, name.length())
.append(';')
.toString();
} else {
String name = getName().replace('.', '/');
return new StringBuilder(name.length() + 2)
.append('L')
.append(name)
.append(';')
.toString();
}
}
/**
* Returns the component type of this {@code Class}, if it describes
* an array type, or {@code null} otherwise.
*
* @implSpec
* Equivalent to {@link Class#getComponentType()}.
*
* @return a {@code Class} describing the component type, or {@code null}
* if this {@code Class} does not describe an array type
* @since 12
*/
@Override
public Class componentType() {
return isArray() ? componentType : null;
}
/**
* Returns a {@code Class} for an array type whose component type
* is described by this {@linkplain Class}.
*
* @return a {@code Class} describing the array type
* @since 12
*/
@Override
public Class arrayType() {
return Array.newInstance(this, 0).getClass();
}
/**
* Returns a nominal descriptor for this instance, if one can be
* constructed, or an empty {@link Optional} if one cannot be.
*
* @return An {@link Optional} containing the resulting nominal descriptor,
* or an empty {@link Optional} if one cannot be constructed.
* @since 12
* @hide
*/
@Override
public Optional
* {@code Class.forName(className, true, currentLoader)}
*
*
* where {@code currentLoader} denotes the defining class loader of
* the current class.
*
*
* {@code Class t = Class.forName("java.lang.Thread")}
*
*
* {@code Class.forName("Foo")}
*
*
* is equivalent to:
*
*
* {@code Class.forName("Foo", true, this.getClass().getClassLoader())}
*
*
* Note that this method throws errors related to loading, linking
* or initializing as specified in Sections {@jls 12.2}, {@jls
* 12.3}, and {@jls 12.4} of The Java Language
* Specification.
* Note that this method does not check whether the requested class
* is accessible to its caller.
*
* @param name fully qualified name of the desired class
* @param initialize if {@code true} the class will be initialized
* (which implies linking). See Section {@jls
* 12.4} of The Java Language
* Specification.
* @param loader class loader from which the class must be loaded
* @return class object representing the desired class
*
* @throws LinkageError if the linkage fails
* @throws ExceptionInInitializerError if the initialization provoked
* by this method fails
* @throws ClassNotFoundException if the class cannot be located by
* the specified class loader
*
* @see java.lang.Class#forName(String)
* @see java.lang.ClassLoader
*
* @jls 12.2 Loading of Classes and Interfaces
* @jls 12.3 Linking of Classes and Interfaces
* @jls 12.4 Initialization of Classes and Interfaces
* @since 1.2
*/
@CallerSensitive
public static Class forName(String name, boolean initialize,
ClassLoader loader)
throws ClassNotFoundException
{
// Android-changed: Android has no SecurityManager.
/*
Class caller = null;
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
// Reflective call to get caller class is only needed if a security manager
// is present. Avoid the overhead of making this call otherwise.
caller = Reflection.getCallerClass();
if (loader == null) {
ClassLoader ccl = ClassLoader.getClassLoader(caller);
if (ccl != null) {
sm.checkPermission(
SecurityConstants.GET_CLASSLOADER_PERMISSION);
}
}
}
*/
if (loader == null) {
loader = BootClassLoader.getInstance();
}
Class result;
try {
result = classForName(name, initialize, loader);
} catch (ClassNotFoundException e) {
Throwable cause = e.getCause();
if (cause instanceof LinkageError) {
throw (LinkageError) cause;
}
throw e;
}
return result;
}
/** Called after security checks have been made. */
@FastNative
static native Class classForName(String className, boolean shouldInitialize,
ClassLoader classLoader) throws ClassNotFoundException;
// Android-removed: Remove unsupported forName(Module, String) method.
/*
* Returns the {@code Class} with the given
* binary name in the given module.
*
*
*
*
* @jls 12.2 Loading of Classes and Interfaces
* @jls 12.3 Linking of Classes and Interfaces
* @since 9
* @spec JPMS
*
@CallerSensitive
public static Class forName(Module module, String name) {
Objects.requireNonNull(module);
Objects.requireNonNull(name);
ClassLoader cl;
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
Class caller = Reflection.getCallerClass();
if (caller != null && caller.getModule() != module) {
// if caller is null, Class.forName is the last java frame on the stack.
// java.base has all permissions
sm.checkPermission(SecurityConstants.GET_CLASSLOADER_PERMISSION);
}
PrivilegedAction{@code
* clazz.newInstance()
* }
*
* can be replaced by
*
* {@code
* clazz.getDeclaredConstructor().newInstance()
* }
*
* The latter sequence of calls is inferred to be able to throw
* the additional exception types {@link
* InvocationTargetException} and {@link
* NoSuchMethodException}. Both of these exception types are
* subclasses of {@link ReflectiveOperationException}.
*
* @return a newly allocated instance of the class represented by this
* object.
* @throws IllegalAccessException if the class or its nullary
* constructor is not accessible.
* @throws InstantiationException
* if this {@code Class} represents an abstract class,
* an interface, an array class, a primitive type, or void;
* or if the class has no nullary constructor;
* or if the instantiation fails for some other reason.
* @throws ExceptionInInitializerError if the initialization
* provoked by this method fails.
*/
// Android-changed: Implement newInstance() by native code.
/*
@SuppressWarnings("removal")
@CallerSensitive
public T newInstance()
throws InstantiationException, IllegalAccessException
{
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkMemberAccess(sm, Member.PUBLIC, Reflection.getCallerClass(), false);
}
// Constructor lookup
Constructor
*
*
*
*
*
Element Type Encoding
* {@code boolean} {@code Z}
* {@code byte} {@code B}
* {@code char} {@code C}
* class or interface with binary name N
* {@code L}N{@code ;}
* {@code double} {@code D}
* {@code float} {@code F}
* {@code int} {@code I}
* {@code long} {@code J}
* {@code short} {@code S}
*
*
* @return the name of the class, interface, or other entity
* represented by this {@code Class} object.
* @jls 13.1 The Form of a Binary
*/
public String getName() {
String name = this.name;
// Android-changed: ART has a different JNI layer.
// return name != null ? name : initClassName();
if (name == null)
this.name = name = getNameNative();
return name;
}
// Android-changed: ART has a different JNI layer.
// private native String initClassName();
@FastNative
private native String getNameNative();
// Android-changed: Remove SecurityException javadoc.
/**
* Returns the class loader for the class. Some implementations may use
* null to represent the bootstrap class loader. This method will return
* null in such implementations if this class was loaded by the bootstrap
* class loader.
*
*
* String.class.getName()
* returns "java.lang.String"
* byte.class.getName()
* returns "byte"
* (new Object[3]).getClass().getName()
* returns "[Ljava.lang.Object;"
* (new int[3][4][5][6][7][8][9]).getClass().getName()
* returns "[[[[[[[I"
*
* {@code class Shimmer implements FloorWax, DessertTopping { ... }}
*
* suppose the value of {@code s} is an instance of
* {@code Shimmer}; the value of the expression:
*
* {@code s.getClass().getInterfaces()[0]}
*
* is the {@code Class} object that represents interface
* {@code FloorWax}; and the value of:
*
* {@code s.getClass().getInterfaces()[1]}
*
* is the {@code Class} object that represents interface
* {@code DessertTopping}.
*
*
*
*
* @return the canonical name of the underlying class if it exists, and
* {@code null} otherwise.
* @since 1.5
*/
public String getCanonicalName() {
// Android-changed: Android has no ReflectionData class.
if (isArray()) {
String canonicalName = getComponentType().getCanonicalName();
if (canonicalName != null)
return canonicalName + "[]";
else
return null;
}
if (isHidden() || isLocalOrAnonymousClass())
// Android-changed: Android has no ReflectionData class. Returns null directly.
// return ReflectionData.NULL_SENTINEL;
return null;
Class enclosingClass = getEnclosingClass();
if (enclosingClass == null) { // top level class
return getName();
} else {
String enclosingName = enclosingClass.getCanonicalName();
if (enclosingName == null)
// Android-changed: Android has no ReflectionData class. Returns null directly.
// return ReflectionData.NULL_SENTINEL;
return null;
String simpleName = getSimpleName();
return new StringBuilder(enclosingName.length() + simpleName.length() + 1)
.append(enclosingName)
.append('.')
.append(simpleName)
.toString();
}
}
/**
* Returns {@code true} if and only if the underlying class
* is an anonymous class.
*
* @return {@code true} if and only if this class is an anonymous class.
* @since 1.5
* @jls 15.9.5 Anonymous Class Declarations
*/
// Android-changed: ART has a different JNI layer.
/*
public boolean isAnonymousClass() {
return !isArray() && isLocalOrAnonymousClass() &&
getSimpleBinaryName0() == null;
}
*/
@FastNative
public native boolean isAnonymousClass();
/**
* Returns {@code true} if and only if the underlying class
* is a local class.
*
* @return {@code true} if and only if this class is a local class.
* @since 1.5
* @jls 14.3 Local Class Declarations
*/
public boolean isLocalClass() {
// Android-changed: ART has a different JNI layer.
// return isLocalOrAnonymousClass() &&
// (isArray() || getSimpleBinaryName0() != null);
return (getEnclosingMethod() != null || getEnclosingConstructor() != null)
&& !isAnonymousClass();
}
/**
* Returns {@code true} if and only if the underlying class
* is a member class.
*
* @return {@code true} if and only if this class is a member class.
* @since 1.5
* @jls 8.5 Member Type Declarations
*/
public boolean isMemberClass() {
// Android-changed: ART has a different JNI layer.
// return !isLocalOrAnonymousClass() && getDeclaringClass0() != null;
return !isLocalOrAnonymousClass() && getDeclaringClass() != null;
}
/**
* Returns {@code true} if this is a top level class. Returns {@code false}
* otherwise.
*/
private boolean isTopLevelClass() {
// Android-changed: ART has a different JNI layer.
// return !isLocalOrAnonymousClass() && getDeclaringClass0() == null;
return !isLocalOrAnonymousClass() && getDeclaringClass() == null;
}
/**
* Returns {@code true} if this is a local class or an anonymous
* class. Returns {@code false} otherwise.
*/
private boolean isLocalOrAnonymousClass() {
// Android-changed: ART has a different JNI layer.
/*
// JVM Spec 4.7.7: A class must have an EnclosingMethod
// attribute if and only if it is a local class or an
// anonymous class.
return hasEnclosingMethodInfo();
*/
return isLocalClass() || isAnonymousClass();
}
/**
* Returns an array containing {@code Class} objects representing all
* the public classes and interfaces that are members of the class
* represented by this {@code Class} object. This includes public
* class and interface members inherited from superclasses and public class
* and interface members declared by the class. This method returns an
* array of length 0 if this {@code Class} object has no public member
* classes or interfaces. This method also returns an array of length 0 if
* this {@code Class} object represents a primitive type, an array
* class, or void.
*
* @return the array of {@code Class} objects representing the public
* members of this class
*
* @since 1.1
*/
@SuppressWarnings("removal")
@CallerSensitive
public Class[] getClasses() {
// Android-changed: Removed SecurityManager check.
List
*
*
* @apiNote There may be more than one method with a particular name
* and parameter types in a class because while the Java language forbids a
* class to declare multiple methods with the same signature but different
* return types, the Java virtual machine does not. This
* increased flexibility in the virtual machine can be used to
* implement various language features. For example, covariant
* returns can be implemented with {@linkplain
* java.lang.reflect.Method#isBridge bridge methods}; the bridge
* method and the overriding method would have the same
* signature but different return types.
*
* @return the array of {@code Method} objects representing the
* public methods of this class
* @throws SecurityException
* If a security manager, s, is present and
* the caller's class loader is not the same as or an
* ancestor of the class loader for the current class and
* invocation of {@link SecurityManager#checkPackageAccess
* s.checkPackageAccess()} denies access to the package
* of this class.
*
* @jls 8.2 Class Members
* @jls 8.4 Method Declarations
* @since 1.1
*/
@CallerSensitive
public Method[] getMethods() throws SecurityException {
// Android-changed: Removed SecurityManager check.
List
*
*
*
*
*
*
*
* @apiNote There may be more than one method with matching name and
* parameter types in a class because while the Java language forbids a
* class to declare multiple methods with the same signature but different
* return types, the Java virtual machine does not. This
* increased flexibility in the virtual machine can be used to
* implement various language features. For example, covariant
* returns can be implemented with {@linkplain
* java.lang.reflect.Method#isBridge bridge methods}; the bridge
* method and the overriding method would have the same
* signature but different return types. This method would return the
* overriding method as it would have a more specific return type.
*
* @param name the name of the method
* @param parameterTypes the list of parameters
* @return the {@code Method} object that matches the specified
* {@code name} and {@code parameterTypes}
* @throws NoSuchMethodException if a matching method is not found
* or if the name is "<init>"or "<clinit>".
* @throws NullPointerException if {@code name} is {@code null}
* @throws SecurityException
* If a security manager, s, is present and
* the caller's class loader is not the same as or an
* ancestor of the class loader for the current class and
* invocation of {@link SecurityManager#checkPackageAccess
* s.checkPackageAccess()} denies access to the package
* of this class.
*
* @jls 8.2 Class Members
* @jls 8.4 Method Declarations
* @since 1.1
*/
@CallerSensitive
public Method getMethod(String name, Class... parameterTypes)
throws NoSuchMethodException, SecurityException {
Objects.requireNonNull(name);
// Android-changed: Removed SecurityManager check.
return getMethod(name, parameterTypes, true);
}
/**
* Returns a {@code Constructor} object that reflects the specified
* public constructor of the class represented by this {@code Class}
* object. The {@code parameterTypes} parameter is an array of
* {@code Class} objects that identify the constructor's formal
* parameter types, in declared order.
*
* If this {@code Class} object represents an inner class
* declared in a non-static context, the formal parameter types
* include the explicit enclosing instance as the first parameter.
*
*
*
*
*
*
*
* @since 1.1
* @jls 8.5 Member Type Declarations
*/
// Android-changed: Removed SecurityException.
/*
@CallerSensitive
public Class[] getDeclaredClasses() throws SecurityException {
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), false);
}
return getDeclaredClasses0();
}
*/
@FastNative
public native Class[] getDeclaredClasses();
/**
* Returns an array of {@code Field} objects reflecting all the fields
* declared by the class or interface represented by this
* {@code Class} object. This includes public, protected, default
* (package) access, and private fields, but excludes inherited fields.
*
*
*
*
*
* @since 1.1
* @jls 8.2 Class Members
* @jls 8.3 Field Declarations
*/
// Android-changed: Removed SecurityException.
/*
@CallerSensitive
public Field[] getDeclaredFields() throws SecurityException {
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
}
return copyFields(privateGetDeclaredFields(false));
}
*/
@FastNative
public native Field[] getDeclaredFields();
/**
* Returns an array of {@code RecordComponent} objects representing all the
* record components of this record class, or {@code null} if this class is
* not a record class.
*
* {@code
* static
*
* @return An array of {@code RecordComponent} objects representing all the
* record components of this record class, or {@code null} if this
* class is not a record class
* @throws SecurityException
* If a security manager, s, is present and any of the
* following conditions is met:
*
*
*
*
*
* @jls 8.10 Record Classes
* @since 16
*/
@CallerSensitive
public RecordComponent[] getRecordComponents() {
// Android-removed: Android doesn't support SecurityManager.
/*
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
}
*/
if (!isRecord()) {
return null;
}
return getRecordComponents0();
}
/**
* Populates a list of fields without performing any security or type
* resolution checks first. If no fields exist, the list is not modified.
*
* @param publicOnly Whether to return only public fields.
* @hide
*/
@FastNative
public native Field[] getDeclaredFieldsUnchecked(boolean publicOnly);
/**
* Returns an array containing {@code Method} objects reflecting all the
* declared methods of the class or interface represented by this {@code
* Class} object, including public, protected, default (package)
* access, and private methods, but excluding inherited methods.
* The declared methods may include methods not in the
* source of the class or interface, including {@linkplain
* Method#isBridge bridge methods} and other {@linkplain
* Executable#isSynthetic synthetic} methods added by compilers.
*
*
*
*
*
* @jls 8.2 Class Members
* @jls 8.4 Method Declarations
* @see Java
* programming language and JVM modeling in core reflection
* @since 1.1
*/
public Method[] getDeclaredMethods() throws SecurityException {
// Android-changed: Removed SecurityManager check.
Method[] result = getDeclaredMethodsUnchecked(false);
for (Method m : result) {
// Throw NoClassDefFoundError if types cannot be resolved.
m.getReturnType();
m.getParameterTypes();
}
return result;
}
/**
* Populates a list of methods without performing any security or type
* resolution checks first. If no methods exist, the list is not modified.
*
* @param publicOnly Whether to return only public methods.
* @hide
*/
@FastNative
public native Method[] getDeclaredMethodsUnchecked(boolean publicOnly);
/**
* Returns an array of {@code Constructor} objects reflecting all the
* constructors declared by the class represented by this
* {@code Class} object. These are public, protected, default
* (package) access, and private constructors. The elements in the array
* returned are not sorted and are not in any particular order. If the
* class has a default constructor, it is included in the returned array.
* This method returns an array of length 0 if this {@code Class}
* object represents an interface, a primitive type, an array class, or
* void.
*
*
*
*
*
* @since 1.1
* @jls 8.8 Constructor Declarations
*/
public Constructor[] getDeclaredConstructors() throws SecurityException {
// Android-changed: Removed SecurityManager check.
return getDeclaredConstructorsInternal(false);
}
/**
* Returns the constructor with the given parameters if it is defined by this class;
* {@code null} otherwise. This may return a non-public member.
*/
@FastNative
private native Constructor[] getDeclaredConstructorsInternal(boolean publicOnly);
/**
* Returns a {@code Field} object that reflects the specified declared
* field of the class or interface represented by this {@code Class}
* object. The {@code name} parameter is a {@code String} that specifies
* the simple name of the desired field.
*
*
*
*
*
* @since 1.1
* @jls 8.2 Class Members
* @jls 8.3 Field Declarations
*/
// Android-changed: ART has a different JNI layer.
// Android-changed: Removed SecurityException.
/*
@CallerSensitive
public Field getDeclaredField(String name)
throws NoSuchFieldException, SecurityException {
Objects.requireNonNull(name);
@SuppressWarnings("removal")
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
checkMemberAccess(sm, Member.DECLARED, Reflection.getCallerClass(), true);
}
Field field = searchFields(privateGetDeclaredFields(false), name);
if (field == null) {
throw new NoSuchFieldException(name);
}
return getReflectionFactory().copyField(field);
}
*/
@FastNative
public native Field getDeclaredField(String name) throws NoSuchFieldException;
/**
* Returns the subset of getDeclaredFields which are public.
*/
@FastNative
private native Field[] getPublicDeclaredFields();
/**
* Returns a {@code Method} object that reflects the specified
* declared method of the class or interface represented by this
* {@code Class} object. The {@code name} parameter is a
* {@code String} that specifies the simple name of the desired
* method, and the {@code parameterTypes} parameter is an array of
* {@code Class} objects that identify the method's formal parameter
* types, in declared order. If more than one method with the same
* parameter types is declared in a class, and one of these methods has a
* return type that is more specific than any of the others, that method is
* returned; otherwise one of the methods is chosen arbitrarily. If the
* name is "<init>"or "<clinit>" a {@code NoSuchMethodException}
* is raised.
*
*
*
*
*
* @jls 8.2 Class Members
* @jls 8.4 Method Declarations
* @since 1.1
*/
@CallerSensitive
public Method getDeclaredMethod(String name, Class... parameterTypes)
throws NoSuchMethodException, SecurityException {
// Android-changed: ART has a different JNI layer.
return getMethod(name, parameterTypes, false);
}
// BEGIN Android-added: Internal methods to implement getMethod(...).
private Method getMethod(String name, Class[] parameterTypes, boolean recursivePublicMethods)
throws NoSuchMethodException {
Objects.requireNonNull(name);
if (parameterTypes == null) {
parameterTypes = EmptyArray.CLASS;
}
for (Class c : parameterTypes) {
if (c == null) {
throw new NoSuchMethodException("parameter type is null");
}
}
Method result = recursivePublicMethods ? getPublicMethodRecursive(name, parameterTypes)
: getDeclaredMethodInternal(name, parameterTypes);
// Fail if we didn't find the method or it was expected to be public.
if (result == null ||
(recursivePublicMethods && !Modifier.isPublic(result.getAccessFlags()))) {
throw new NoSuchMethodException(getName() + "." + name + " "
+ Arrays.toString(parameterTypes));
}
return result;
}
private Method getPublicMethodRecursive(String name, Class[] parameterTypes) {
// search superclasses
for (Class c = this; c != null; c = c.getSuperclass()) {
Method result = c.getDeclaredMethodInternal(name, parameterTypes);
if (result != null && Modifier.isPublic(result.getAccessFlags())) {
return result;
}
}
return findInterfaceMethod(name, parameterTypes);
}
/**
* Returns an instance method that's defined on this class or any super classes, regardless
* of its access flags. Constructors are excluded.
*
* This function does not perform access checks and its semantics don't match any dex byte code
* instruction or public reflection API. This is used by {@code MethodHandles.findVirtual}
* which will perform access checks on the returned method.
*
* @hide
*/
public Method getInstanceMethod(String name, Class[] parameterTypes)
throws NoSuchMethodException, IllegalAccessException {
for (Class c = this; c != null; c = c.getSuperclass()) {
Method result = c.getDeclaredMethodInternal(name, parameterTypes);
if (result != null && !Modifier.isStatic(result.getModifiers())) {
return result;
}
}
return findInterfaceMethod(name, parameterTypes);
}
private Method findInterfaceMethod(String name, Class[] parameterTypes) {
Object[] iftable = ifTable;
if (iftable != null) {
// Search backwards so more specific interfaces are searched first. This ensures that
// the method we return is not overridden by one of it's subtypes that this class also
// implements.
for (int i = iftable.length - 2; i >= 0; i -= 2) {
Class ifc = (Class) iftable[i];
Method result = ifc.getPublicMethodRecursive(name, parameterTypes);
if (result != null && Modifier.isPublic(result.getAccessFlags())) {
return result;
}
}
}
return null;
}
// END Android-added: Internal methods to implement getMethod(...).
// Android-removed: unused method.
/*
* Returns the list of {@code Method} objects for the declared public
* methods of this class or interface that have the specified method name
* and parameter types.
*
* @param name the name of the method
* @param parameterTypes the parameter array
* @return the list of {@code Method} objects for the public methods of
* this class matching the specified name and parameters
*
List
*
*
*
* @since 1.1
*/
@CallerSensitive
public Constructor
*
*
*
* @param name name of the desired resource
* @return A {@link java.io.InputStream} object; {@code null} if no
* resource with this name is found.
* @throws NullPointerException If {@code name} is {@code null}
* @since 1.1
* @revised 9
*/
@CallerSensitive
public InputStream getResourceAsStream(String name) {
name = resolveName(name);
// unnamed module
// Android-changed: Removed BuiltinClassLoader, Module usage, and SecurityManager check.
ClassLoader cl = getClassLoader();
if (cl == null) {
return ClassLoader.getSystemResourceAsStream(name);
} else {
return cl.getResourceAsStream(name);
}
}
// Android-changed: Remove javadoc related to the module system.
/**
* Finds a resource with a given name.
*
* '\u002f'), then the absolute name of the resource is the
* portion of the {@code name} following the {@code '/'}.
*
*
* {@code modified_package_name/name}
*
*
* '\u002e').
*
*
*
*
*
* @param name name of the desired resource
* @return A {@link java.net.URL} object; {@code null} if no resource with
* this name is found.
* @throws NullPointerException If {@code name} is {@code null}
* @since 1.1
* @revised 9
*/
@CallerSensitive
public URL getResource(String name) {
name = resolveName(name);
// unnamed module
// Android-changed: Removed BuiltinClassLoader, Module usage, and SecurityManager check.
ClassLoader cl = getClassLoader();
if (cl == null) {
return ClassLoader.getSystemResource(name);
} else {
return cl.getResource(name);
}
}
// Android-removed: Remove unused method.
/*
* Returns true if a resource with the given name can be located by the
* given caller. All resources in a module can be located by code in
* the module. For other callers, then the package needs to be open to
* the caller.
*
private boolean isOpenToCaller(String name, Class caller) {
// assert getModule().isNamed();
Module thisModule = getModule();
Module callerModule = (caller != null) ? caller.getModule() : null;
if (callerModule != thisModule) {
String pn = Resources.toPackageName(name);
if (thisModule.getDescriptor().packages().contains(pn)) {
if (callerModule == null && !thisModule.isOpen(pn)) {
// no caller, package not open
return false;
}
if (!thisModule.isOpen(pn, callerModule)) {
// package not open to caller
return false;
}
}
}
return true;
}
/** protection domain returned when the internal domain is null *
private static java.security.ProtectionDomain allPermDomain;
*/
/**
* Returns the {@code ProtectionDomain} of this class. If there is a
* security manager installed, this method first calls the security
* manager's {@code checkPermission} method with a
* {@code RuntimePermission("getProtectionDomain")} permission to
* ensure it's ok to get the
* {@code ProtectionDomain}.
*
* @return the ProtectionDomain of this class
*
* @throws SecurityException
* if a security manager exists and its
* {@code checkPermission} method doesn't allow
* getting the ProtectionDomain.
*
* @see java.security.ProtectionDomain
* @see SecurityManager#checkPermission
* @see java.lang.RuntimePermission
* @since 1.2
*/
public java.security.ProtectionDomain getProtectionDomain() {
// Android-changed: Removed SecurityManager check.
return null;
}
// Android-removed: Removed SecurityManager check.
/*
// package-private
java.security.ProtectionDomain protectionDomain() {
java.security.ProtectionDomain pd = getProtectionDomain0();
if (pd == null) {
if (allPermDomain == null) {
java.security.Permissions perms =
new java.security.Permissions();
perms.add(SecurityConstants.ALL_PERMISSION);
allPermDomain =
new java.security.ProtectionDomain(null, perms);
}
pd = allPermDomain;
}
return pd;
}
/**
* Returns the ProtectionDomain of this class.
*//*
private native java.security.ProtectionDomain getProtectionDomain0();
*/
/*
* Return the runtime's Class object for the named
* primitive type.
*/
@FastNative
static native Class getPrimitiveClass(String name);
// Android-removed: Remove unused method.
/*
* Check if client is allowed to access members. If access is denied,
* throw a SecurityException.
*
* This method also enforces package access.
*
* '\u002f'), then the absolute name of the resource is the
* portion of the {@code name} following the {@code '/'}.
*
*
* {@code modified_package_name/name}
*
*
* '\u002e').
*
*
*
*
*
*
*
*