4.0.0 javassist javassist jar Javassist (JAVA programming ASSISTant) makes Java bytecode manipulation simple. It is a class library for editing bytecodes in Java. 3.8.0.GA Javassist http://www.javassist.org/ src/main/ src/test/ org.apache.maven.plugins maven-compiler-plugin 1.4 1.4 org.apache.maven.plugins maven-jar-plugin ${project.build.sourceDirectory}/META-INF/MANIFEST.MF jdk14 1.4 com.sun tools 1.4 system true ${java.home}/../lib/tools.jar jdk15 1.5 com.sun tools 1.5 system true ${java.home}/../lib/tools.jar jdk16 1.6 com.sun tools 1.6 system true ${java.home}/../lib/tools.jar junit junit 3.8.1 test