private void validateJUnit4 ( ) throws BuildException { try { Class < ? > clazz = Class . forName ( "org.junit.runner.Description" ) ; if ( ! Serializable . class . isAssignableFrom ( clazz ) ) { throw new BuildException ( "At least JUnit version 4.10 is required on junit4's taskdef classpath." ) ; } } catch ( ClassNotFoundException e ) { throw new BuildException ( "JUnit JAR must be added to junit4 taskdef's classpath." ) ; } }
Validate JUnit4 presence in a concrete version .