FULL PRODUCT VERSION :
java version "1.4.2_09"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_09-b05)
Java HotSpot(TM) Client VM (build 1.4.2_09-b05, mixed mode)

java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows XP

A DESCRIPTION OF THE PROBLEM :
When using special characters in "UTF-16" no compile error is thrown on 1.4.2_09 but using "UTF-16BE" throws an UnicodeEncoder Error on 5.0_06

---------- BEGIN SOURCE ----------

The test case below works on JDK 1.4.2_09. However changing the the encoding into "UTF-16" or "UTF-16BE", the case can not work neither in 1.4.2 nor in 1.5.0.

/import junit.framework.TestCase;

/**
 * UnicodeEncoder Error When using special characters in "UTF-16" or
"UTF-16BE"
 *
 * @author fengyun
 * @version 1.00 Mar 22, 2006 3:59:35 PM
 */
public class UTF16Test extends TestCase
{
    public void testConvert() throws Exception
    {
        char[] chars = new char[]{0xDC3E};
        //Create a new String
        String str = new String(chars);
        //Convert to byte array
        byte[] bytes2 = str.getBytes("UTF16");
        //Create a new String from the byte array
        String newString = new String(bytes2, "UTF16");
        //The string must be same as before, But the isn't equal here
        assertTrue(newString.equals(str));
    }
}

/////////////////////////////////////////////////////////////////////////////////

You must add the junit jar. No configuration is need. The test case below running with JDK 5.0 will throw a Exception:

import junit.framework.TestCase;
/**
 * UnicodeEncoder Error When using special characters in "UTF-16" or
"UTF-16BE"
 *
 * @author fengyun
 * @version 1.00 Mar 22, 2006 3:59:35 PM
 */
public class UTF16Test extends TestCase
{
    public void testConvert() throws Exception
    {
        char[] chars = new char[]{0xDC3E};
        //Create a new String
        String str = new String(chars);
        //Convert to byte array
        byte[] bytes2 = str.getBytes("UTF-16BE");
        //Create a new String from the byte array
        String newString = new String(bytes2, "UTF-16BE");
        //The string must be same as before, But the isn't equal here
        assertTrue(newString.equals(str));
    }
}
---------- END SOURCE ----------

REPRODUCIBILITY :
This bug can be reproduced always.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
--------------------------------------------------------------------------------
junit.framework.AssertionFailedError
 at UTF16Test.testConvert(UTF16Test.java:21)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at com.intellij.rt.execution.junit2.JUnitStarter.main(JUnitStarter.java:32)
--------------------------------------------------------------------------------