תוכנית דוגמה

/*File Toolkit01.java
Copyright 1997, R.G.Baldwin

This program illustrates the use of the Toolkit class to 
obtain system-specific information at runtime.

This program was tested using JDK 1.1.3 under Win95.

**********************************************************/
import java.awt.*;
import java.awt.event.*;

class Toolkit01 extends Frame{ //controlling class

  public static void main(String[] args){
    new Toolkit01();//instantiate this object
   }//end main
  //=====================================================//
  
  public Toolkit01(){//constructor
    int width = //get width and height of screen in pixels
         Toolkit.getDefaultToolkit().getScreenSize().width;
    int height = 
        Toolkit.getDefaultToolkit().getScreenSize().height;

    //Set size of frame and decorate it
    this.setSize(width/2,height/2);
    this.setTitle("Copyright 1997, Baldwin");
    this.setBackground(Color.yellow);
    this.setLayout(new FlowLayout());

    //Display width and height of screen in Label objects
    this.add(new Label("" + width));
    this.add(new Label("" + height));
    
    this.setVisible(true);//make the Frame visible
    //Try to emit an audible signal
    Toolkit.getDefaultToolkit().beep();  
   
    //Anonymous inner-class listener to terminate program
    this.addWindowListener(
      new WindowAdapter(){//anonymous class definition
        public void windowClosing(WindowEvent e){
          System.exit(0);//terminate the program
        }//end windowClosing()
      }//end WindowAdapter
    );//end addWindowListener
  }//end constructor 
}//end class Toolkit01   
//=======================================================//