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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 9138] New: - NullPointerException in AntClassLoader
Date Wed, 15 May 2002 23:59:02 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9138

NullPointerException in AntClassLoader

           Summary: NullPointerException in AntClassLoader
           Product: Ant
           Version: 1.5Beta1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Core
        AssignedTo: ant-dev@jakarta.apache.org
        ReportedBy: kohlhaas@informatik.uni-bonn.de


I encountered this Exception under the following conditions

I'm using JDE 2.2.9 for emacs and use the bean-scripting-framework to start
ant. BSF loads the ant classes once on startup and never reloads them
during the Emacs-Session.

When I start org.apache.tools.ant.Main to execute a non-forked java task
I get the following Exception:

java.lang.NullPointerException
	at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1052)	at
org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1030)
	at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:925)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:262)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322)
	at
org.rapla.gui.components.calendar.DaySelection.calculateSizes(DaySelection.java:87)

I can't reproduce the excpetion with a simple demonstration-application.
But I found out, that it has something todo with the cleanup() method of
AntClassLoader. An instance of AntClassLoader gets reused after the cleanup()
method is called and pathComponent=null. I emptied the cleanup() method for
testing and everything worked fine.

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