Name: krT82822 Date: 05/30/99


ERROR: sun.tools.java.CompilerError: stack under flow: 53: invokespecial ExplicitEvent. 1$MyButton(ExplicitEvent,java.lang.String,javax.swing.Icon) = -1
-- listing --
$18:
53: aload 0
53: aload 3
53: aload 4
53: invokespecial ExplicitEvent. 1$MyButton(ExplicitEvent,java.lang.String,javax.swing.Icon)
53: return
sun.tools.java.CompilerError: stack under flow: 53: invokespecial ExplicitEv
ent. 1$MyButton(ExplicitEvent,java.lang.String,javax.swing.Icon) = -1
        at sun.tools.asm.Assembler.balance(Assembler.java:249)
        at sun.tools.asm.Assembler.write(Assembler.java:381)
        at sun.tools.javac.SourceClass.compileClass(SourceClass.java:2410)
        at sun.tools.javac.SourceClass.compile(SourceClass.java:2039)
        at sun.tools.javac.Main.compile(Main.java:567)
        at sun.tools.javac.Main.main(Main.java:733)
error: An error has occurred in the compiler; please file a bug report (http://j
ava.sun.com/cgi-bin/bugreport.cgi).
1 error
--------------------------------------------------------------
C:\work>java -version
java version "1.2.1"
HotSpot VM (1.0fcs, mixed mode, build E)
--------------------------------------------------------------
C:\work>java -fullversion
JAVA.EXE full version "JDK-1.2.1-A"
--------------------------------------------------------------
/*
 *ExplicitEvent.java
 *
 */
 //package friendly XXX
 import javax.swing.*;
 import java.awt.*;
 import java.awt.AWTEvent;
 import java.awt.event.*;
/**
 *This class is a practice for explicit
 *event enabling.
 *
 *Problem: Wheather Swing or AWT,
 *the compiler generates a
 *reportable bug.
 *
 *Should this be caused by a programming error
 *I would greatly appreciate your reply.
 *
 *@version 5/29/99 12:29PM
 *@author Florin Gheorghies, Portland, OR
 */
 public class ExplicitEvent extends JFrame
  implements WindowListener {
 
private JLabel label;
private JButton button;
private Image image;

/**
* Constructs a <code>JFrame</code> as the root
* of the program's containment hierarchy.
*/
public ExplicitEvent(String titleString) {
super(titleString);
// getContentPane(add(getButton(), BorderLayout.NORTH); // ORIG
         getContentPane().add(getButton(), BorderLayout.NORTH); // kevin.ryan@eng 5/30/99
  setBounds(200, 100, 300, 300);
setVisible(true);
}

/**
*Creates and returns a button that handles its own events
*/
private Component getButton () {
/*all activity is local, artifact complete */
final String text = "Press Me!";
final Icon icon = new ImageIcon("action.gif");

class MyButton extends JButton {
Icon image2 = new ImageIcon("wallmart.gif");

private MyButton (String text_, Icon icon_) {
super(text_, icon_);
enableEvents(AWTEvent.ACTION_EVENT_MASK);
System.out.println("The button is being initialized...");
System.out.println("The AWTEvent is being enabled...");
}
//Atention! processActionEvent from the AWT package,
//produces the same error:
public void processEvent(ActionEvent ae) {
super.processEvent(ae);

label = new JLabel(image2);

if (ExplicitEvent.this.isShowing()) {
System.out.println("JFrame is being checked " +
"for active...");
ExplicitEvent.this.add(label, BorderLayout.CENTER);
System.out.println("Label has been added to " +
"the frame.");
}
}
}
return new MyButton(text, icon);
}

public static void main (String[] args) {
ExplicitEvent ee = new ExplicitEvent("ExplicitEvent");
}
//FIXME: make use of these methods for the fun of it
public void windowActivated(WindowEvent we) {}
public void windowClosed(WindowEvent we) {}
public void windowDeactivated(WindowEvent we) {}
public void windowDeiconified(WindowEvent we) {}
public void windowIconified(WindowEvent we) {}
public void windowOpened(WindowEvent we) {}
public void windowClosing(WindowEvent we) {
System.out.println("Program is now being closed...");
System.exit(0);
}
}
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(Review ID: 83647)
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