[Javacad-develop] I cannot run the JCad. Pls do me a favor

[powergis <pow...@si...>]

Hi, guys,

I'm a beginner of JAVA developing.
I download the JCad source codes and try to test. Now some problems occur.

First, I have read such files carefully:
       README
       INSTALL
       DOCS/hacking.txt
       DOCS/userguide.txt
But I cannot find the file "JCad.jar". So I have to compile the sourcecodes on myself.

First step, I compile them with JDK 1.2.2. I found that SAX classes are missing, so I download SAX2.0 from the official SAX website. Henceforth, I've got the JCad.class.

Second, I try to run it as follows:
##########################################################
C:\JCad>java org/jcad/JCad/JCad
uncaught exception: java.lang.NullPointerException
java.lang.NullPointerException
        at org.jcad.JCad.JCad.main(JCad.java:224)
##########################################################

I found that JCad.java:224 is as follows:
      frame.getContentPane().add("Center", new JCad());

Can you do me a favor to help me out? Thanks in advance.

/PowerGIS

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