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Re: How to handle a NullPointerException

From: Andrew Haley <aph at redhat dot com>
To: Dimiter Stamenov <pamir at abv dot bg>
Cc: java at gcc dot gnu dot org
Date: Wed, 20 Feb 2008 12:52:01 +0000
Subject: Re: How to handle a NullPointerException
References: <1945727993.32581.1203510437948.JavaMail.nobody@mail52.abv.bg>

Dimiter Stamenov wrote:

Hi experts,

I have successfully compiled a Java project with gcj from Java source, but when start the compiled executable, a java.lang.NullPointerException is thrown without a stack trace.

If I could know what is the reason it, I may eventually be able to modify the source to avoid it, but how to know that? When I run the program with the standard JVM, there is no problem.

Everything I know is the class and high-level method in which it happens.

The system is Windows XP with GCJ 4.2 from http://www.thisiscool.com/gcc_mingw.htm.
The compile command is:
gcj --main=Universal -o universal.exe -g -s @files.list
The output when start the universal.exe is:
java.lang.NullPointerException
   <<No stacktrace available>>

Do simple programs work?

Andrew.

References:
- How to handle a NullPointerException
  - From: Dimiter Stamenov

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