Is there a Java1 compiler (.java to .class)?
Gcj can also compile .java to .class. CVS version currently does handle inner classes, as well as any other jdk 1.1 constructs, but might not be able to compile a complicated program like the XSL processor xt. It is written in C, so is reasonably fast. It generates reasonably good bytecode. And of course being able to use the same compiler for .java to .class and .java to native has its advantages.