I installed eclipse 4.2 java on Ubuntu 12.04 x86_64 and it just crashes everytime it opens the auto completion context menu. It crashes without any error message and just closes the eclipse window. Interestingly, it also crashes when I click on of the menu points in Edit->Content Assist AND it crashes when I click in the Window->Preferences on the menu point General->Web Browser. (I experienced that because I wanted to switch off auto completion, but I couldn't find it.)
Does anybody have a clue what's wrong? I can provide any information you need, just let me know. I can also perform steps that might seem promising to you and report the results.
Some information that might be interesting to you:
I have tried with different versions of java JDK, e.g. openjdk-6-jdk, openjdk-7-jdk, oracle-6-jdk, oracle-7-jdk, and different versions of eclipse, e.g. eclipse 3.7 (Indigo) and eclipse 4.2 (Juno). Nothing worked out, but maybe I did it wrong because I had to install oracle-jdk's manually.
$ java -version java version "1.7.0_15" OpenJDK Runtime Environment (IcedTea7 2.3.7) (7u15-2.3.7-0ubuntu1~12.04.1) OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode) $ javac -version javac 1.7.0_15