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From "Vasily Zakharov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-4755) [classlib][swing][html] JEditorPane.setPage() throws NPE
Date Thu, 06 Sep 2007 22:19:28 GMT
[classlib][swing][html] JEditorPane.setPage() throws NPE
--------------------------------------------------------

                 Key: HARMONY-4755
                 URL: https://issues.apache.org/jira/browse/HARMONY-4755
             Project: Harmony
          Issue Type: Bug
          Components: Classlib
            Reporter: Vasily Zakharov
            Priority: Minor


If JEditorPane.setPage() is called on a visible pane and passed an HTML URL, NPE occurs.

Here's the simple reproducer:

import javax.swing.JEditorPane;
import javax.swing.JFrame;
public class Test {
    public static void main(String argv[]) {
        try {
            JFrame frame = new JFrame("Test");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(100, 100);
            JEditorPane pane = new JEditorPane();
            frame.add(pane);
            frame.setVisible(true);
            pane.setPage("file:test.html");
        } catch (Throwable e) {
            e.printStackTrace(System.out);
        }
    }
} 

test.html should exist in current directory and may be empty.

This test produces the following exception on Harmony:

java.lang.NullPointerException
        at javax.swing.text.html.BlockView.paint(BlockView.java:77)
        at javax.swing.text.RootView.paint(RootView.java:211)
        at javax.swing.plaf.basic.BasicTextUI.paintSafely(BasicTextUI.java:839)
        at javax.swing.plaf.basic.BasicTextUI.paint(BasicTextUI.java:88)
        at javax.swing.plaf.ComponentUI.update(ComponentUI.java:38)
        at javax.swing.plaf.basic.BasicTextUI.update(BasicTextUI.java:955)
        at javax.swing.JComponent.paintComponent(JComponent.java:897)
        at javax.swing.JComponent.paint(JComponent.java:994)
        at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:1425)
        at javax.swing.JComponent.paintImmediately(JComponent.java:156)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:186)
        at javax.swing.RepaintManager$1.run(RepaintManager.java:80)
        at java.awt.event.InvocationEvent.runAndNotify(InvocationEvent.java:98)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:78)
        at java.awt.EventQueueCore.dispatchEventImpl(EventQueueCore.java:138)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:144)
        at java.awt.EventDispatchThread.runModalLoop(EventDispatchThread.java:74)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:48)

To see the exception, please enable stack trace printing at EventDispatchThread.java, line
89.


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