JDK 1.1.5G seems to have a problem on Solaris which only shows up occasionally. When a new frame is created, it is initially invisible. This problem only shows up when when the frame is being made visible before setting it's size and location. It really only shows up sometimes so for a test it has to be tried several times. The effect is that sometimes the frame is too big and the excess areas are drawn in black. When this happens getBounds() returns wrong values after the frame has been moved or resized with the mouse. Sometimes (when the problem does not show up) it works just fine. I have not been able to reproduce this problem when the setSize() and setLocation() calls are made before the frame is being made visible. In this case getBounds() returns correct values.
This problem does not show up in JDK1.1.4. However in 1.1.4 getBounds() almost always returns wrong values.

Here is the testcase that I used:


import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;

public class DisplayMgr extends Frame
implements WindowListener, ComponentListener, ActionListener
{
Dimension windowSize = new Dimension(300,300);
Point location = new Point(50,50);
MenuBar mb;
Menu file;
MenuItem cause_bug_b;

/////////////////////////////////////////////////////////////
// Constructor
public DisplayMgr()
{
super("TIM Graphics Display Manager");

mb = new MenuBar();

file = new Menu("File");

// add menubar menues to the menubar
mb.add(file);

// menu items for the file menu
cause_bug_b = new MenuItem("cause bug");
// add file menuitems to file menu
file.add(cause_bug_b);

setMenuBar(mb); // add menubar to frame

addComponentListener(this);
addWindowListener(this);
cause_bug_b.addActionListener(this);

// Making the frame visible before setSize and setLocation()
// are being called causes sometimes strange behaviour with
// JDK1.1.5G. The frame is then sometimes to large and the
// excess areas are drawn in black. This only happens
// sometimes.
setVisible(true);

setSize(windowSize.width, windowSize.height);
System.out.println("start() attempting to set location = " +
location);
setLocation(location.x, location.y);
}

/////////////////////////////////////////////////////////////
// Window listeners
public void windowClosing(WindowEvent e)
{
// user has double clicked the upper-right window mgr button
System.exit(0);
}
public void windowOpened(WindowEvent e) {}
public void windowClosed(WindowEvent e) {}
public void windowIconified(WindowEvent e) {}
public void windowDeiconified(WindowEvent e) {}
public void windowActivated(WindowEvent e) {}
public void windowDeactivated(WindowEvent e) {}

/////////////////////////////////////////////////////////////
// Component listeners
public void componentResized(ComponentEvent e)
{
Rectangle bounds = getBounds();
System.out.println("componentResized: bounds = " + bounds);
}
public void componentMoved(ComponentEvent e)
{
Rectangle bounds = getBounds();
System.out.println("componentMoved: bounds = " + bounds);
}
public void componentShown(ComponentEvent e) {}
public void componentHidden(ComponentEvent e) {}

/////////////////////////////////////////////////////////////
// Action listener
public void actionPerformed(ActionEvent e)
{
setVisible(false);
setVisible(true);
return;
}


/////////////////////////////////////////////////////////////
// Get the whole thing going -> main()
public static void main(String args[])
{
new DisplayMgr();
}
}