artodeto's free port

So you just want to start a java application and it does not work.
First idea "lets start it from within a shell to see something", so you do.

/usr/bin/java: line 2: /usr/lib/jvm/default/bin/java: Too many levels of symbolic links
/usr/bin/java: line 2: exec: /usr/lib/jvm/default/bin/java: cannot execute: Too many levels of symbolic links

sudo su
cd /usr/lib/jvm
ls -halt
# something like "default -> default" should be listed
rm -fr default
# if you have installed java-7-openjdk, what should be listed by the ls above
ln -s java-7-openjdk default

And thats it, enjoy your working java applications again.