Hi, On Sun, Dec 5, 2010 at 10:14 AM, Chao Wang <chaowang05 at gmail.com> wrote: > only an antlr-3.3-complete.jar file in the lib folder. The compiling failed > with only this file in classpath. > Can you post the stack trace? Can you post the grammar (assuming things go wrong when generating a lexer/parser...)? Bart.