Setting default encoding to Cp1256 in jdev 9.0.5.2

Dears,
I want to set the default encoding of my project to Cp1256, I don't c any value with this and when I use windows-1256 it sometimes compiles but gives errors on runtime, and sometimes gives error that this encoding is not in any included library, I really begin having starnge behaviour on jdeveloper, till I change it and restart jdeveloper.
This encoding Cp1256 was in jdeveloper 9.0.3.4 and I need it on jdeveloper 9.0.5.2 because I'm migrating to 10g, but using default encoding is causing me losts of problem.
I'm running it on windows XP professional edition.
Any ideas?
Thanks in advance.

I solved the problem, after reading:
http://java.sun.com/j2se/1.4.2/docs/guide/intl/encoding.doc.html
I created a new library in jdeveloper 9.0.5.2 named "extended-encoding-set" and added the following two jars to it:
JDEV_HOME\jdk\jre\lib\rt.jar
JDEV_HOME\jdk\jre\lib\charsets.jar
and added this directory to my project.
Thanks

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