I\'ve got the following structure
lib/junit-4.10.jar tests/Tester.java tests/Tester.class build/jar/jar_file.jar
(Tester belongs to package tes
The classpath should be semi colon separated (on Windows - not sure what you are using.)
java -cp build/jar/jar_file.jar;lib/junit-4.10.jar org.junit.runner.JUnitCore tests.Tester
Also with this command line you will need to run it in your project root