Install JDeveloper on Mac
By gc on Sep 28, 2010
There is a very important trick to play before installing Oracle JDeveloper on a Mac. Basically you need to fool the JDEV installer to believe the java on your Mac is like those on Unix/Linux box.
sudo mkdir -p jre/lib
sudo ln -s ../../../Classes/classes.jar rt.jar
This step was actually on Installation Guide for Oracle JDeveloper