• Remember that your CLASSPATH contains – .:$Tiger/java/classes • When running in your compiler directory – If your compiler is missing a particular packageName/blah.class – then it will look for blah.class in $Tiger/java/classes/packageName • I’ve installed correct versions of all executables in $Tiger/java/classes • If you know that any of your classes is not ok, or you want to see how a correct version operates, then simply delete the compiled version of the code for the moment