I\'m working on a project that has lots of different Maven projects. I\'ve been doing a bunch of JUnit testing on these projects, and usually this goes well. I open up Eclipse
I faced the same problem(after importing pom.xml to eclipse,the project is not treated as a java one,and there is only "maven project builder" in project builders property,but no "java builder") in eclipse luna.
Re-importing maven project after deleting ".settings" folder and ".project" file did not work. Re-importing after a workspace switch worked for me.