[DrJava] [ drjava-Bugs-1598463 ] Adding subclass of JSlider causes exception

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Bugs item #1598463, was opened at 2006-11-17 11:33
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Category: UI: MacOS X-specific
Group: 4: Serious
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: bwbecker (bwbecker)
Assigned to: Nobody/Anonymous (nobody)
Summary: Adding subclass of JSlider causes exception

Initial Comment:
Users of my library reported an exception when it displayed a window.  I reduced it down to the following code, which produces the exception that follows the code.  This was on a friend's PowerBook running Tiger and Java 1.5.  She has DrJava version 20060918-1737.

Thanks!
Byron

Here's the code:

import javax.swing.*;

public class TestUI
{
  public static void main(String[] args)
  { JPanel p = new JPanel();
    p.add(new SpeedSlider());
    
    JFrame f = new JFrame("TestUI");
    f.setContentPane(p);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setSize(100, 100);
    f.setVisible(true);
  }
}

class SpeedSlider extends JSlider
{
  public SpeedSlider()
  { super(JSlider.VERTICAL, 0, 100, 20);
  }
}


Here's the exception generated:

UIDefaults.getUI() failed: createUI() failed for
SpeedSlider[,0,0,0x0,invalid,alignmentX=0.0,alignmentY=0.0,border=,flags=0,maximumSize=,minimumSize=,preferredSize=,isInverted=false,majorTickSpacing=0,minorTickSpacing=0,orientation=VERTICAL,paintLabels=false,paintTicks=false,paintTrack=true,snapToTicks=false,snapToValue=true]
java.lang.reflect.InvocationTargetException
java.lang.Error
	at javax.swing.UIDefaults.getUIError(UIDefaults.java:691)
	at javax.swing.MultiUIDefaults.getUIError(MultiUIDefaults.java:117)
	at javax.swing.UIDefaults.getUI(UIDefaults.java:737)
	at javax.swing.UIManager.getUI(UIManager.java:868)
	at javax.swing.JSlider.updateUI(JSlider.java:244)
	at javax.swing.JSlider.<init>(JSlider.java:194)
	at SpeedSlider.<init>(TestUI.java:24)
	at TestUI.main(TestUI.java:9)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at
koala.dynamicjava.interpreter.EvaluationVisitor.visit(EvaluationVisitor.java:1105)
	at
edu.rice.cs.drjava.model.repl.EvaluationVisitorExtension.visit(EvaluationVisitorExtension.java:254)
	at koala.dynamicjava.tree.StaticMethodCall.acceptVisitor(StaticMethodCall.java:109)
	at
edu.rice.cs.drjava.model.repl.DynamicJavaAdapter$InterpreterExtension.interpret(DynamicJavaAdapter.java:429)
	at
edu.rice.cs.drjava.model.repl.DynamicJavaAdapter.interpret(DynamicJavaAdapter.java:93)
	at
edu.rice.cs.drjava.model.repl.newjvm.InterpreterJVM$4.run(InterpreterJVM.java:249)




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