Name: auR10023 Date: 03/17/2003



java.nio.charset.Charset.decode(ByteBuffer bb) returns incorrect character
sequence with unmapable character 0x00010000.

Here is the example:

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

import java.io.*;
import java.nio.*;
import java.nio.charset.*;

public class test {
    public static void main (String [] args) {
        byte bArray [] = new byte [] {
            //UTF-8 representation of the 0x10000
            (byte)0xf0, (byte)0x90, (byte)0x80, (byte)0x80
        };

        try {
            Charset c = Charset.forName("UTF-8");
            ByteBuffer bbuf = ByteBuffer.allocate(bArray.length);
            bbuf.put(bArray);
            bbuf.position(0);
            CharBuffer res = c.decode(bbuf);
 
            if (res.length() != 1) {
                System.out.println("Incorrect character sequence");
                for (int j = 0; j < res.length(); j++) {
                    System.out.println((int)res.get(j));
                }
                return;
            }
            System.out.println("OKAY");
        } 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

Incorrect character sequence
55296
56320

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