Using Windows XP platform: I new in jboss. I want to build the jboss version 3.23 from jboss-3.2.3-src.tar.gz file. After tar the file, I noticed that some file names have jav or ja or j extension; in some case, there is no file extension. After rename the above files, some of compile errors went away. Can someone tell me why some files have the wrong extensions? Is some wrong with the packing this compressed file? BTW, I have tried this in my Linux machine - the result is the same. Thanks.