TYA is a ``100% unofficial'' JIT-compiler designed as an add-on to the Blackdown ports of JDK 1.1.x for Linux (x86), but currently experimental ported for usage with JDK 1.2. For the command line option, run Java using option "-Djava.compiler=", like this example: java -Djava.compiler=tya Iview Valetta.jpg # ^ set property ^ ^your pgm ^ pgm's options But a better and easier way is setting the JAVA_COMPILER environment variable, as in export JAVA_COMPILER=tya