aj, aj5 — command-line launchers for load-time weaving
command runs Java programs in Java 1.4 or later by setting up
as the system class loader, to do load-time
command runs Java programs using AspectJ Java5 JVMTI agent to do
load-time bytecode weaving.
The arguments are the same as those used to launch the Java program. Users
should define the environment variables CLASSPATH