[Annie Xie]

I have installed myEclipse 20050829-4.0.0-GA 4 months ago and it has been working very well. Now all of a sudden it refuses to build no matter what I do. I even deleted the old project and recreated the project and it’s still not kicking off the build. I got the following build error:

Project ‘WSP’ is targeting a 1.2 runtime, but iscompiled against
‘D:bea/jdk142_05/jre/lib/rt.jar’ which requires a 1.4 runtime

What is this? There is no jdk1.2 or jre1.2 in my envionment. Where does that come from?

[Riyad Kalla]

Open up your compiler settings and go to the “Compliance” section, somehow this likely got set to 1.2 and it should be 1.4 or 5.0.

Project Properties > Java Compilers *** IF you have “Enabled project specifi settings” checked here, make the changes here, otherwise click “Configure Workspace Settings” and make the change there ****

[Annie Xie]

Thanks rkalla. You are right. That was exactly what happened. I found that problem and fixed it as you suggested but the problem still persisted. So I ran the magic command “eclipse.exe -clean” and that fixed it.

[Riyad Kalla]

Glad it’s working now, nice job using -clean, I’m amazed to this day the little quirks that seems to fix at times.

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