TimeZone.getDefault().getID() returning wrong value with JDK 1.5.0.06

Hi,
I faced a problem while fetching a time zone Id for the two different JDK version.
I was running following Class :
import java.util.TimeZone;
public class TimeZoneTest {
     public static void main(String[] args) {
          System.out.println("--------------------------------------------");
          System.out.println("Time Zone : " +TimeZone.getDefault().getID());
          System.out.println("--------------------------------------------");
When above code is executed with JDK 1.5.0.06, it was giving output as :
Time Zone : GMT+05:30
But same code when executed with JDK 1.5.0.22, it gives following output.
Time Zone : Asia/Calcutta
Can anybody please tell me is it a known bug in JAVA and in which version has it ben resolved.
Thanks,
Girish.

You shouldn't be using either of those versions. If there is a difference between them you will be entirely unable to get it resolved. Use a current JDK.

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SCOTT@10gXE> -- test environment:
SCOTT@10gXE> CREATE TABLE "TEST"
2 (
3 id NUMBER(19) NOT NULL,
4 "TESTDATA" CLOB NOT NULL ENABLE
5 )
6 /
Table created.
SCOTT@10gXE> insert into test values (1, '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
2 <user>
3 <givenname>victor</fn>
4 <surname>frandenstein</sn>
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6 ')
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1 row created.
SCOTT@10gXE> insert into test values (2, '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
2 <user>
3 <givenname>me victor</fn>
4 <surname>frandenstein</sn>
5 </user>
6 ')
7 /
1 row created.
SCOTT@10gXE> insert into test values (3, '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
2 <user>
3 <givenname>naren</fn>
4 <surname>frandenstein</sn>
5 </user>
6 ')
7 /
1 row created.
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SCOTT@10gXE> CREATE INDEX IX_testdata ON test (testdata) INDEXTYPE IS CTXSYS.CONTEXT
2 PARAMETERS
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2 where
3 contains(testdata,
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Hello
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