Java application window hides under all of other windows(native or java)
due to mouseEntered event.


   >>Following instruction and code demonstrates the problem.
   >>
   >>1.Run the java program and place the window on the another window.
   >> e:\test java TestW
   >> +---------+
   >> |TestW | X
   >> +-| |----------------+
   >> | | Y | Window B |
   >> | +---------+ |
   >>
   >>2.Set the mouse focus to the desk top window by pressing the mouse left
   >> button there.
   >>3.Move the mouse cursor from the desk top window to the test program
   >> window, i.e., from the position X to Y in the figure above. Do not
   >> move mouse cursor into the black box area in the TestW window because
   >> it will cause exception. I'll report this in another submission
   >> as it seems to be different bug.
   >>4.The TestW window is automatically hidden under another window, i.e.,
   >> Window B in the figure above.
   >>
   >>import java.applet.*;
   >>import java.awt.*;
   >>import java.awt.event.*;
   >>
   >>public class TestW extends Applet implements MouseListener
   >>{
   >> Window wi = null;
   >>
   >> public static void main(String[] args)
   >> {
   >> Frame f = new Frame("TestW");
   >> TestW tw = new TestW();
   >> tw.init();
   >> f.setLayout(new GridLayout(1,1));
   >> f.add(tw);
   >> f.setVisible(true);
   >> f.setSize(f.getPreferredSize());
   >> }
   >>
   >> public Dimension getPreferredSize(){
   >> return new Dimension(100,100);
   >> }
   >>
   >> public void init(){
   >> addMouseListener(this);
   >> }
   >>
   >> public void mouseEntered(MouseEvent e){
   >> Component parent = getParent();
   >> Frame frame = null;
   >> while (parent != null){
   >> if(parent instanceof Frame){
   >> frame = (Frame)parent;
   >> break;
   >> }
   >> parent = parent.getParent();
   >> }
   >> if(frame!=null){
   >> wi = new Window(frame);
   >> wi.setBackground(Color.black);
   >> Point r = getLocationOnScreen();
   >> wi.setVisible(true);
   >> wi.setBounds(r.x+25,r.y+25,50,50);
   >> }
   >> }
   >> public void mouseExited(MouseEvent e){
   >> if(wi!=null){
   >> wi.setVisible(false);
   >> wi.dispose();
   >> wi=null;
   >> }
   >> }
   >> public void mousePressed(MouseEvent e){}
   >> public void mouseReleased(MouseEvent e){}
   >> public void mouseClicked(MouseEvent e){}
   >>}