Accepted answer

this is an eclipse error message. it seems your installation is corrupted. try using a fresh installation of eclipse.


before trying a fresh install i just restarted eclipse and it did the trick.


i just had the same problem. i relaunch eclipse with the "-clean" option, and it did the trick too.

edit: how to run eclipse in clean mode? and what happens if we do so?


i came across this after i updated java versions: "junit: could not load main class 1.1". go into the eclipse external tools configurations, open the entry for the ant file you are running, then go to the jre tab, and select "separate jre", also making sure your new jre is correctly listed in the installed jres...for me, this took care of it.

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