/proj/demsys/demjava/packages/ajc/bin to your 
  PATH environment variable 
  .software file. /proj/demsys/demjava/packages/ajc/bin 
    .software file then you have to append 
    the above directory to your PATH variable in your shell's initialization 
    file. /proj/demsys/demjava/packages/ajc/lib/aspectjrt.jar 
  to your CLASSPATH environment variable. 
  .software 
    file. /proj/demsys/demjava/packages/ajc/lib/aspectjrt.jar 
    .software file then you have to append 
    the above directory to your CLASSPATH variable in your shell's 
    initialization file. ajc -version 
To compile a bunch of Java files use ajc *.java 
To find out about how AspectJ compiles the code, use ajc -preprocess 
*.java and inspect the ajworkingdir directory. 
For information on compiler options as well as AspectJ in general visit The AspectJ Web Page