Name: sdR10048 Date: 02/14/2001


protected void javax.swing.JComponent.setUI(ComponentUI newUI)
throws unexpected exception NullPointerException ("SurfaceData is NULL
or native ops missing") in headless mode.
See example:
--------------------------------------------------
[falcon] ~/tmp
% cat Test.java
public class Test {
    public static void main(String args[]) {
        System.out.println("===");
        try {
            new javax.swing.JScrollBar();
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println("===");
        try {
            new javax.swing.JInternalFrame();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

[falcon] ~/tmp
% java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b50)
Java HotSpot(TM) Client VM (build 1.4beta-B50, mixed mode)

[falcon] ~/tmp
% java -Djava.awt.headless=true Test
Java HotSpot(TM) Client VM warning: ValueGen::do_LoopEnter(...) not implemented yet
Java HotSpot(TM) Client VM warning: ValueGen::do_LoopExit(...) not implemented yet
===
java.lang.NullPointerException: SurfaceData is NULL or native ops missing
        at sun.java2d.loops.FillRect.FillRect(Native Method)
        at sun.java2d.pipe.LoopPipe.fillRect(LoopPipe.java:109)
        at sun.java2d.pipe.ValidatePipe.fillRect(ValidatePipe.java:42)
        at sun.java2d.SunGraphics2D.fillRect(SunGraphics2D.java:2014)
        at javax.swing.plaf.metal.BumpBuffer.fillBumpBuffer(MetalBumps.java:177)
        at javax.swing.plaf.metal.BumpBuffer.<init>(MetalBumps.java:152)
        at javax.swing.plaf.metal.MetalBumps.createBuffer(MetalBumps.java:62)
        at javax.swing.plaf.metal.MetalBumps.setBumpColors(MetalBumps.java:97)
        at javax.swing.plaf.metal.MetalBumps.<init>(MetalBumps.java:54)
        at javax.swing.plaf.metal.MetalScrollBarUI.installDefaults(MetalScrollBarUI.java:78)
        at javax.swing.plaf.basic.BasicScrollBarUI.installUI(BasicScrollBarUI.java:105)
        at javax.swing.JComponent.setUI(JComponent.java:360)
        at javax.swing.JScrollBar.setUI(JScrollBar.java:186)
        at javax.swing.JScrollBar.updateUI(JScrollBar.java:206)
        at javax.swing.JScrollBar.<init>(JScrollBar.java:140)
        at javax.swing.JScrollBar.<init>(JScrollBar.java:155)
        at javax.swing.JScrollBar.<init>(JScrollBar.java:169)
        at Test.main(Test.java:5)
===
java.lang.NullPointerException: SurfaceData is NULL or native ops missing
        at sun.java2d.loops.FillRect.FillRect(Native Method)
        at sun.java2d.pipe.LoopPipe.fillRect(LoopPipe.java:109)
        at sun.java2d.pipe.ValidatePipe.fillRect(ValidatePipe.java:42)
        at sun.java2d.SunGraphics2D.fillRect(SunGraphics2D.java:2014)
        at javax.swing.plaf.metal.BumpBuffer.fillBumpBuffer(MetalBumps.java:177)
        at javax.swing.plaf.metal.BumpBuffer.<init>(MetalBumps.java:152)
        at javax.swing.plaf.metal.MetalBumps.createBuffer(MetalBumps.java:62)
        at javax.swing.plaf.metal.MetalBumps.setBumpColors(MetalBumps.java:97)
        at javax.swing.plaf.metal.MetalBumps.<init>(MetalBumps.java:54)
        at javax.swing.plaf.metal.MetalDesktopIconUI.installComponents(MetalDesktopIconUI.java:65)
        at javax.swing.plaf.basic.BasicDesktopIconUI.installUI(BasicDesktopIconUI.java:53)
        at javax.swing.JComponent.setUI(JComponent.java:360)
        at javax.swing.JInternalFrame$JDesktopIcon.setUI(JInternalFrame.java:2099)
        at javax.swing.JInternalFrame$JDesktopIcon.updateUI(JInternalFrame.java:2147)
        at javax.swing.JInternalFrame$JDesktopIcon.<init>(JInternalFrame.java:2079)
        at javax.swing.JInternalFrame.<init>(JInternalFrame.java:285)
        at javax.swing.JInternalFrame.<init>(JInternalFrame.java:203)
        at Test.main(Test.java:11)

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