Name: auR10023 Date: 03/14/2003



java.nio.charset.Charset.aliases() returns non empty alias sets for:
UTF-8, UTF-16BE, UTF-16LE, UTF-16 but according to the IANA Charset Registry
these charsets have no aliases.

Here is the example:

-------test.java---------

import java.nio.charset.*;

public class test {
    public static void main (String [] args) {
        Charset c = null;
        String [] chrs = { "UTF-8", "UTF-16BE", "UTF-16LE", "UTF-16"};
                             
        for (int i = 0; i < chrs.length; i++) {
            try {
                c = Charset.forName(chrs[i]);
 
                if (c.aliases().size() > 0) {
                    System.out.println("Charset " + chrs[i] +
                                        " has non empty set of aliases");
                }
            } catch(IllegalCharsetNameException e) {
                System.out.println("Unexpected " + e);
            } catch (UnsupportedCharsetException e) {
                System.out.println("Unexpected " + e);
            }
        }
    }
}

Here is the result
#java -version

java version "1.4.2-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-beta-b16)
Java HotSpot(TM) Client VM (build 1.4.2-beta-b16, mixed mode)

#java test

Charset UTF-8 has non empty set of aliases
Charset UTF-16BE has non empty set of aliases
Charset UTF-16LE has non empty set of aliases
Charset UTF-16 has non empty set of aliases

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