Java JDK 6.0 with JDeveloper How to
Make sure you have downloaded and installed JDeveloper 11.1.1.
Download and Install
Download and Install Java JDK 6.0 from http://java.sun.com/javase/downloads/index.jsp. Fdata recommends Update 3.
Install it in the default path C:\Program Files\Java\.
When finished make sure you have a C:\Program Files\Java\jdk1.6.0_03 directory.
Configure JDeveloper for Java 6.0
Some preview versions of JDeveloper 11.1.1 came with Java 1.5.0 or no JDK at all. Framework v3.0 requires Java 6.0 to run.
Run c:\jdev\jdeveloper.exe (or where ever you have installed JDeveloper)
Open Tools -> Default Project Properties …
Select Libraries in the left window.
Click on Change … button.
Select User from the left hand window.
Press the New … button.
Click on the Browse … button and navigate to the location of the java.exe for JDK 6.0 (C:\Program Files\Java\jdk1.6.0_03\bin\java.exe).
Press OK to save the new definition. This will now be the default JDK for all new JDeveloper Project.