1) Download and install JDeveloper 11g
2) Install JDK 7 b128
2) cd $JDEVELOPER_HOME/jdev/bin
3) edit jdev.conf and set SetJavaHome to JDK7 installation
4) launch jdeveloper
After step 4, an error dialog appears with a message:
"The program can't start because MSVCR100.dll is missing from your computer.
Try reinstalling the program to fix this problem."
This msvcr100.dll is located in JDK7 bin directory, but is not being picked up by jdeveloper.
If the system has a installation of Visual C++, it may not be reproducible.