Assembling/Disassembling Java Class Files

• You may dissassemble class files using a tool called D-Java. A local copy of the executable can be found on the teaching network at ~hendren/JOOS1.1/Bin/D-Java and a copy of the source code can be found at ~hendren/JOOS1.1/D-Java .

  To dissassemble foo.class , use the command:
  ~hendren/JOOS1.1/Bin/D-Java -o jasmin > foo.j .
  
  

• If you used the -o jasmin flag when using D-Java, then you have produced a file that can be assembled using the jasmin tool, you may edit the assembler code produced by D-java, introduce optimizations by hand, and then assemble using jasmin. A local copy of the jasmin code can be found on skinner at ~hendren/JOOS1.1/Jasmin .

  To use jasmin you must add /u0/prof/hendren/JOOS1.1/Jasmin/jasmin/classes to your CLASSPATH, and then to assemble the file foo.j , use the command:
  java jasmin.Main foo.j .

  This will produce the file foo.class .