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From "Vasily Zakharov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-2767) [classlib][swing] javax.swing.plaf.basic.BasicSplitPaneUI.getMaximumSize(JScrollBar sb) throws NPE while RI does not
Date Wed, 10 Jan 2007 16:43:27 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-2767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12463621
] 

Vasily Zakharov commented on HARMONY-2767:
------------------------------------------

The exception is thrown because the class wasn't properly initialized and its layoutManager
field is null. The field is normally initialized by installUI() call, and if the following
statement:

        localBasicSplitPaneUI.installUI(new javax.swing.JSplitPane());

is added to the test before getMaximumSize() call, the problem disappears.

The problem is actual not only for getMaximumSize(), but for some other methods also.


> [classlib][swing] javax.swing.plaf.basic.BasicSplitPaneUI.getMaximumSize(JScrollBar sb)
throws NPE while RI does not
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-2767
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2767
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Denis Kishenko
>
> Harmony throws unspecified NPE for javax.swing.plaf.basic.BasicSplitPaneUI.getMaximumSize(JScrollBar
sb) while RI works silently.
> junit test for reproducing:
> import junit.framework.TestCase;
> import javax.swing.JScrollBar;
> import java.awt.Dimension;
> import javax.swing.plaf.basic.BasicSplitPaneUI;
> public class test extends TestCase 
> {
>         public void testcase0()
>         { 
>                 BasicSplitPaneUI localBasicSplitPaneUI = new
> BasicSplitPaneUI();
>                 JScrollBar localJScrollBar = new JScrollBar();
>                 try 
>                 {
>                         localBasicSplitPaneUI.getMaximumSize(localJScrollBar);
>                         System.out.println("works silently");
>                         assertEquals(true, true);
>                 } 
>                 catch (NullPointerException unexpectedException) 
>                 {fail("Unspecified "+unexpectedException+" was thrown");
>                 }
>         }
> }
> OUTPUT:
> Harmony+j9:
> java version 1.5 (subset)
> (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as
> app
> licable.
> .F
> Time: 1.391
> There was 1 failure:
> 1) testcase0(test)junit.framework.AssertionFailedError: Unspecified
> java.lang.Nu
> llPointerException was thrown
>         at test.testcase0(test.java:19)
>         at
> java.lang.reflect.AccessibleObject.invokeV(AccessibleObject.java:205)
> FAILURES!!!
> Tests run: 1,  Failures: 1,  Errors: 0
> ------------------------------------------------------------------------
> SUN
> java version "1.5.0_06"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
> Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
> .works silently
> Time: 0.703
> OK (1 test)

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