Java Development Tools

When i try to create a new class by clicking on the "new" button in the toolbar, choice "java class" and hit ok in the next dialog - an error dialog pops up saying:

"java.lang.Object" is not a valid vase class for this operation.


This is a freshly installed jDeveloper 10g production version - NOT EA1 (built 1913). This error may also be related to another issue where I am getting

"internal compilation error, terminated with a fatal exception"

I have tried the suggestions in the other posts about this error but none work
I cannot find the "use JavaC" checkbox that is referred to many times.

I am using J2SDK1.4.2_10 and the base installation of 10g (10.1.2 - production).
I set the "SetJavaHome" variable in the jdev.conf file correctly
I installed jDeveloper into the directory "c:\jdev"
I have set the JAVA_HOME and the CLASSPATH variables.

I tried to uninstall everything and install the 10g FULL install with jdk1.4.2_06 (10.1.2 - production) but had the same problem.

Still the same error every time I try to compile i simple "Hello World" program.

Also the "Profiles->Development->Libraries" tree-node in the "Tools->Project Properties" causes a null pointer exception when I try to select it.

Any help would be appreciated. I need to get this up and running as soon as possible.