I\'ve installed Oracle 11g r2 to my machine and when I opened Oracle SQL Developer it says: java 1.6.0_02 is not supported
and telling me to install new java ve
This workaround helped many people (including me) during the last 12 months, so you must try it if you still have the problem:
Obs: you will need to provide administrator authorization to finish the file copy, so you must be logged on as a true windows administrator.
After copying the file, just try to start the sqldeveloper again. No reboot needed.
Hope this helps you too!