Re: swarm-2.2-pretest-2 running problems

[Tim Howe]

MM,

I also have seen the Swarm/Java NullPointerException. Being unfamiliar with
Swarm, I used this brute-force approach to solve the problem:

I put diagnostics such as <<System.out.println ("point 0")>> at the tops of
a few major methods throughout the application. Running that and refining
the diagnostics based on the output, I found out exactly which variable
Swarm
was complaining about. In my case it was a Grid2d. In your case you would
presumably compare it with what JBuilder is doing.

By the way, I tried trapping NullPointerException, but that didn't help.

- Tim


----- Original Message -----
From: "Marcus G. Daniels" <address@hidden>
To: <address@hidden>
Sent: Tuesday, October 30, 2001 8:06 AM
Subject: Re: swarm-2.2-pretest-2 running problems


> >>>>> "MM" == Mamei Marco (NRC/Boston) <address@hidden> writes:
>
> MM> I have some problems in running java simulations from the cygwin
> MM> shell.  I usually go to the directoyr in which my classes are
> MM> located and then I run from there sh /swarm-2.2/bin/javaswarm
> MM> StartBug
>
> Do you have SWARMHOME set to /Swarm-2.2 in the environment and exported?
>
> Btw, if you add /Swarm-2.2/bin to the PATH in the environment (just the
bash
> environment, autoexec.bat), you won't have to type out that path.
>
> MM> It gives me:
> MM> Internal error: caught an unexpected exception Please check your
> MM> CLASSPATH and your installation.  java/lang/NullPointerException
> MM> ...then it dumps Kaffe.exe ...
>
> MM> Now my classpath contains swarm.jar and I didn't make anything
> MM> strange during the installation.
>
> You don't need to have swarm.jar in the CLASSPATH, as `javaswarm' will
> add it.  Does jheatbugs run?
>
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