sketcher.java

Java Classic Examples是我买的两本书：《JAVA经典实例》和《java入门经典源代码》里边附送光盘里带的源码

// Sketching application
import java.awt.*;
import javax.swing.*;

public class Sketcher extends JApplet
{
  public static void main(String[] args)
  {
    theApp = new Sketcher();              // Create the application object
    theApp.init();                        // ... and initialize it
  }

  public void init()
  {
    window = new SketchFrame("Sketcher");        // Create the app window
    Toolkit theKit = window.getToolkit();        // Get the window toolkit
    Dimension wndSize = theKit.getScreenSize();  // Get screen size

    // Set the position to screen center & size to half screen size
    window.setBounds(wndSize.width/4, wndSize.height/4,        // Position
                     wndSize.width/2, wndSize.height/2);       // Size

    window.setVisible(true);
  }

  private static SketchFrame window;              // The application window
  private static Sketcher theApp;                 // The application object
}