URLDecoder.decode(String s, Stirng enc) is throwing java.nio.BufferOverflowException exception when it is called as follows
String encString = URLEncoder.encode("asdf @ $ adf", "UTF-16BE");
String decString= URLDecoder.decode(encString, "UTF-16BE");

This exception is coming with merlin build 46 on Solaris. 
Exception  :

java.nio.BufferOverflowException
        at java.nio.Buffer.nextPutIndex(Buffer.java:367)
        at java.nio.HeapCharBuffer.put(HeapCharBuffer.java:69)
        at java.nio.CharBuffer.put(CharBuffer.java:766)
        at java.nio.CharBuffer.put(CharBuffer.java:790)
        at java.nio.CharsetDecoder.decode(CharsetDecoder.java:292)
        at java.lang.StringCoding$CharsetSD.decode(StringCoding.java:159)
        at java.lang.StringCoding.decode(StringCoding.java:189)
        at java.lang.String.<init>(String.java:326)
        at java.net.URLDecoder.decode(URLDecoder.java:153)
        at EncodeDecode.performEncodeDecodeTests(EncodeDecode.java:104)
        at EncodeDecode.main(EncodeDecode.java:58)

How to reproduce this:

1. Take the attached EncodeDecode.java and EncodeDecode.data files.

2. Execute as :
  java EncodeDecode -f data/EncodeDecode.data -d

Other Information:

Particularly this exception is coming when input string to encoder is  one of these:
 "asdf $ $ asdf"
  "asdf @@ $$$ asdjflkad"