How to know the version of JUnit in Eclipse

If you selected JUnit4 over JUnit3, the version that Eclipse uses is the one in eclipse/plugins/org.junit_XXXX. For Eclipse Luna, it is eclipse/plugins/org.junit_4.11.0.v201303080030. Note that if you want to change it, based on all the things I tried, you can replace the junit.jar contained inside with the version you want.

You can use this code:

import junit.runner.Version;

System.out.println("JUnit version is: " + Version.id());