FULL PRODUCT VERSION :
C:\Program Files\Java\jre1.6.0_05\bin>java -version
java version "1.6.0_05"
Java(TM) SE Runtime Environment (build 1.6.0_05-b13)
Java HotSpot(TM) Client VM (build 10.0-b19, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
The following line of code throws an UnsupportedEncodingException for these codepages: Cp1144, Cp1153, Cp1154, Cp1155, and Cp1160

     i = test.getBytes(codepage).length;


REPRODUCIBILITY :
This bug can be reproduced always.