I am using Runtime.getRuntime.exec("javac " + path + file) to compile a java file...it works just fine. Then when I use the same code to run it, Runtime.getRuntime.exec("java " + path + class) it comes back with a NoClassDeff error. Doesn't that usually mean that the classpath is not set correctly? But if I can do it with javac then why not java? Thanks Cardwell
My guess: use the -d option of javac to make javac create the class files in appropriate directories for their packages. E.g. if Test.java has a class Test in package mypkg, then <pre>javac -d classdir Test.java</pre> will create the file in classdir/mypkg/Test.class. I've never figured out why this isn't automatic, but you need to specify the option.