Close JFrame when cursor exit from JFrame

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COMPLETE SOURCE CODE FOR : CloseJFrameWhenMouseExit.java
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import javax.swing.JFrame;

import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class CloseJFrameWhenMouseExit
{
public static void main(String[]args)
{
 //Create mouse listener that will listen when cursor exit JFrame
 MouseListener ml=new MouseAdapter()
 {
  public void mouseExited(MouseEvent event)
  {
   //Put JFrame close code here
   System.exit(0);
  }
 };

 //Create JFrame with title ( GET YOUR CURSOR INTO JFRAME, AFTER THAT MOVE IT AWAY )
 JFrame frame=new JFrame("GET YOUR CURSOR INTO JFRAME, AFTER THAT MOVE IT AWAY");

 //Add mouse listener to JFrame
 frame.addMouseListener(ml);

 //Set default close operation to JFrame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 //Set JFrame size to :
 //Width : 700 pixels
 //Height : 400 pixels
 frame.setSize(700,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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JUST COMPILE AND EXECUTE IT
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Java source code to determine when application exit by print a line of text on command prompt

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COMPLETE SOURCE CODE FOR : DetermineWhenApplicationExit.java
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public class DetermineWhenApplicationExit
{
public static void main(String[]args)
{
 Runtime.getRuntime().addShutdownHook(new Thread()
 {
  public void run()
  {
   //Application will print "BYE" when it close
   System.out.println("BYE");
  }
 });

 //Make this application terminate
 System.exit(0);
}
}

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JUST COMPILE AND EXECUTE IT
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Java source code for application terminate (Exit application)

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COMPLETE SOURCE CODE FOR : ExitApplication.java
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public class ExitApplication
{
public static void main(String[]args)
{
 //System.exit(0) will make your application exit
 System.exit(0);
}
}

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JUST COMPILE AND EXECUTE IT
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Close application when click on JFrame close button

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COMPLETE SOURCE CODE FOR : ExitApplicationUsingJFrameCloseButton.java
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import javax.swing.JFrame;

public class ExitApplicationUsingJFrameCloseButton
{
 public static void main(String[]args)
 {
  JFrame a=new JFrame("EXIT AN APPLICATION USING JFRAME CLOSE BUTTON");
  
  //JFrame.EXIT_ON_CLOSE will make your application close when you hit JFrame close button
  a.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  a.setSize(200,200);
  a.setVisible(true);
 }
}

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JUST COMPILE AND EXECUTE IT
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