According to the following page,
 http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html
JDK5.0 supportes
 x-Big5_Solaris,x-ISO2022-CN-CNS, ISO2022_CN_CNS, x-ISO2022-CN-GB and ISO2022_CN_GB

However, isSupported() does not check the above encoding correctly.

ex.
   The document says "x-Big5_Solaris" is supported, but actually isSupported() checks that "x-Big5-Solaris" is
   supported (outputs "true")
  (Please look closely the difference between "_" of "x-Big5_Solaris" and "-" of "x-Big5-Solaris")

As to other encodings, Please execute the attached test program.


TEST PROGRAM :

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import java.nio.charset.*;

class isSupportedTest1 {
    public static void main( String arg[] ) {
System.out.println("x-Big5_Solaris" + " is Supported ? : " + Charset.isSupported("x-Big5_Solaris")); /* expected "true" */
System.out.println("x-Big5-Solaris" + " is Supported ? : " + Charset.isSupported("x-Big5-Solaris"));

System.out.println("x-ISO2022-CN-CNS" + " is Supported ? : " + Charset.isSupported("x-ISO2022-CN-CNS")); /* expected "true" */

System.out.println("x-ISO-2022-CN-CNS" + " is Supported ? : " + Charset.isSupported("x-ISO-2022-CN-CNS"));

System.out.println("ISO2022_CN_CNS" + " is Supported ? : " + Charset.isSupported("ISO2022_CN_CNS")); /* expected "true" */

System.out.println("ISO2022CN_CNS" + " is Supported ? : " + Charset.isSupported("ISO2022CN_CNS"));

System.out.println("x-ISO2022-CN-GB" + " is Supported ? : " + Charset.isSupported("x-ISO2022-CN-GB")); /* expected "true" */

System.out.println("x-ISO-2022-CN-GB" + " is Supported ? : " + Charset.isSupported("x-ISO-2022-CN-GB"));

System.out.println("ISO2022_CN_GB" + " is Supported ? : " + Charset.isSupported("ISO2022_CN_GB")); /* expected "true" */

System.out.println("ISO2022CN_GB" + " is Supported ? : " + Charset.isSupported("ISO2022CN_GB"));

    }
}
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