brickwall.java

32个java程序源代码

// Exercise 20.11: BrickWall.java
// Program builds a brick wall using rectangles.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class BrickWall extends JFrame
{
   // DrawJPanel for displaying bricks
   private DrawJPanel drawingJPanel;

   // no-argument constructor
   public BrickWall()
   {
      createUserInterface();
   }

   // create and position GUI components; register event handlers
   private void createUserInterface()
   {
      // get content pane for attaching GUI components
      Container contentPane = getContentPane();

      // enable explicit positioning of GUI components 
      contentPane.setLayout( null );

      // set up drawingJPanel
      drawingJPanel = new DrawJPanel();
      drawingJPanel.setBounds( 0, 0, 450, 250 );
      drawingJPanel.setBackground( Color.WHITE );
      contentPane.add( drawingJPanel );

      // set properties of application's window
      setTitle( "Brick Wall" );   // set title bar text
      setSize( 454, 275 );        // set window size
      setVisible( true );         // display window

   } // end method createUserInterface

   // main method
   public static void main( String[] args )
   {
      BrickWall application = new BrickWall();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

   } // end method main

} // end class BrickWall

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