| Class name | *Description * |
|---|---|
| {@link java.nio.charset.Charset} | *A named mapping between characters and bytes |
| {@link java.nio.charset.CharsetDecoder} | *Decodes bytes into characters |
| {@link java.nio.charset.CharsetEncoder} | *Encodes characters into bytes |
| {@link java.nio.charset.CoderResult} | *Describes coder results |
| {@link java.nio.charset.CodingErrorAction} | *Describes actions to take when coding errors are detected |
A charset is named mapping between sequences of * sixteen-bit Unicode characters and sequences of bytes, in the sense * defined in RFC 2278. * A decoder is an engine which transforms bytes in a specific * charset into characters, and an encoder is an engine which * transforms characters into bytes. Encoders and decoders operate on * byte and character buffers. They are collectively referred to as * coders. * *
The {@link java.nio.charset.Charset} class defines methods for * creating coders for a given charset and for retrieving the various * names associated with a charset. It also defines static methods * for testing whether a particular charset is supported, for locating * charset instances by name, and for constructing a map that contains * every charset for which support is available in the current Java * virtual machine. * *
Most users will not use these classes directly; instead they * will use the existing charset-related constructors and methods in * the {@link java.lang.String} class, together with the existing * {@link java.io.InputStreamReader} and {@link * java.io.OutputStreamWriter} classes, all of whose implementations * have been reworked to make use of the charset facilities defined in * this package. A small number of changes have been made to the * {@link java.io.InputStreamReader} and {@link * java.io.OutputStreamWriter} classes in order to allow explicit * charset objects to be specified in the construction of instances of * those classes. * *
Support for new charsets can be made available via the * interface defined in the {@link * java.nio.charset.spi.CharsetProvider} class in the {@link * java.nio.charset.spi} package. * *
Unless otherwise noted, passing a {@code null} argument to a * constructor or method in any class or interface in this package * will cause a {@link java.lang.NullPointerException * NullPointerException} to be thrown. * * * @since 1.4 * @author Mark Reinhold * @author JSR-51 Expert Group */ package java.nio.charset;