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From <juergen.schli...@jplanet.de>
Subject NullPointerException with JAR
Date Thu, 20 Nov 2003 10:06:01 GMT

Sometimes I get a NullPointerException while building JARs with the jar
task. I have got the IBM JDK 1.3.1:

java.lang.NullPointerException
        at
org.apache.tools.zip.ZipOutputStream.finish(ZipOutputStream.java(Compiled
Code))
        at
java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:139)
        at org.apache.tools.ant.taskdefs.Zip.execute(Zip.java:453)
        at org.apache.tools.ant.Task.perform(Task.java:341)
        at org.apache.tools.ant.Target.execute(Target.java:309)
        at org.apache.tools.ant.Target.performTasks(Target.java:336)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1339)
        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:397)
        at
org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:143)
        at org.apache.tools.ant.Task.perform(Task.java:341)
        at org.apache.tools.ant.Target.execute(Target.java:309)
        at org.apache.tools.ant.Target.performTasks(Target.java:336)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1339)
        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:397)
        at
org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:143)
        at org.apache.tools.ant.Task.perform(Task.java:341)
        at org.apache.tools.ant.Target.execute(Target.java:309)
        at org.apache.tools.ant.Target.performTasks(Target.java:336)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1339)
        at
org.apache.tools.ant.Project.executeTargets(Project.java:1255)
        at org.apache.tools.ant.Main.runBuild(Main.java:609)
        at org.apache.tools.ant.Main.start(Main.java:196)
        at org.apache.tools.ant.Main.main(Main.java:235)

What could the problem be?


J├╝rgen

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