Eclipse (with J2EE plugins) will not build class files to output directory

Question

I have had this issue with several versions of Eclipse. In some scenarios, Eclipse will not output bytecode class files to the output directory. I will do a build and a clean. I am working with Tomcat server. I stop the server and still Eclipse will not do a build.

My output directory: project/WebContent/WEB-INF/classes

Sometimes after doing so many builds and/or restarting my machine, I am able to build again to that directory. Does any know what the problem is?

Also, what is the best way to create a bug report for this problem.

Version Info: Galileo Eclipse Java EE IDE for Web Developers. Build id: 20100218-1602

Also, mvn m2eclipse plugin installed.

Solution 1

This usually happens if, project build path is missing some required libraries. Also ensure, build automatically is checked [ Project > Build Automatically ]. Please post if you still face problem

Solution 2

I had the same problem. I had "Build Automatically" checked, and was expecting class file in my project/bin directory but it was empty. What worked for me was unchecking "Build Automatically" in Project menu, Project -> Clean and then do Project -> Build All. Now all .java files were compiled and I checked "Build Automatically" again.

Comments

[matbrgz]

Use the "add comment" link under the question (and any comments).

[smallfire]

I see the link under my answer, but not under the question. I must need a higher rep for adding comments to questions.

[Berlin Brown]

Interesting response. I may check that out.

[Abidi]

@Ranta, I am having the same problem, all my source packages are copied over to metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapp‌​s/webapp but without any class files. Any ideas?

[Ratna Dinakar]

Check whether your source folder is configured and added to build path and output folders

[alexander]

Wow! I faced this problem like 30 mins, saw this post and thought: 'Ah, this can't be true'. I was so wrong! Thank you so much!