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GUI-based Applications
In this section you will learn about how to create a window for your application. You need to define a subclass of Frame to create a window for your application.

GUI-based Applications

In this section you will learn about how to create a window for your application. You need to define a subclass of Frame to create a window for your application. The Frame consists of a Window with a title, menubar, and border. Moreover, you need to construct an instance of that class through the main method as shown below.

One point to remember here is that Applications respond to events in the same way as applets do. In the example given below, you will see that the Application responds to the native window toolkit i.e. quit or close.


import java.awt.*; 

import java.awt.event.*; 

 

public class ApplicationWindow extends Frame{ 

  public ApplicationWindow(){ 

    super("ApplicationWindow"); 

    setSize(200, 200); 

    addWindowListener(new WindowAdapter(){ 

      public void windowClosing(WindowEvent we){ 

        setVisible(false); dispose(); 

        System.exit(0); 

      } 

    }); 

  } 

 

  public static void main(String[] args){ 

    ApplicationWindow aw = new ApplicationWindow(); 

    aw.setVisible(true); 

  } 

}

Output of the program:

C:\newprgrm>javac ApplicationWindow.java

C:\newprgrm>java ApplicationWindow

Download this example.

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