javaeclipsetomcatbreakpoints

Unable to create a breakpoint in Eclipse and Tomcat

Since yesterday, I get a strange error message when I start my Tomcat (6.0.35) under Eclipse Juno (build 20120614-1722):

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Among the things I tried in order to get rid of the error:

And now, I don't know what to do anymore. The problem is really stopping me from get anything done. I can't work anymore.

Crazy is: the problem doesn't happen on every class, only on some of them. Neither does it happen on my other Eclipse projects. And it didn't happen before yesterday, even if I can't remeber having done anything weird. Actually, I have never seen a problem like this in almost 10 years I'm using Eclipse...

If you have any idea, I would be really grateful...

Edit:

I also tried to ignore the message and go on with my tests: If I create another breakpoint upstream from my problematic class, when I enter this problematic class, it tries to open a $Proxy132 class, which means it actually opens an empty page, with a source not found message

Solution

  • Whenever I would see this kind of message in Eclipse Helios it was because the compile step (Ant in my case) was not set to include debug information. When using Ant, we had a build.xml file that had a flag stating debug="true". This would be just a higher-level way of setting the "-g" parameter to javac. Once I set my debug flag to "true", the "-g" option would be sent to the compiler and the source code would build with line number information included. This had to be done on all Java files, so if you have modules that aren't compiled automatically as part of a bigger Java process, you will need to make sure those flags get sent to the compiler in those modules as well. Basically, everywhere you need to debug has to have the "-g" flag set when compiling it. Hope this helps.