graphicstest.java

Java程序设计技巧与开发实例附书源代码。

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

public class GraphicsTest
    extends Frame {
  private class WindowCloser
      extends WindowAdapter {
    public void windowClosing(WindowEvent we) {
      System.exit(0);
    }
  }

  public GraphicsTest() {
    super("Graphics Test");
    setSize(400, 400);
    show();
    addWindowListener(new WindowCloser());
  }

  public void paint(Graphics g) {
    g.setColor(Color.black);
    g.drawOval(10, 40, 30, 40);
    g.setColor(Color.red);
    g.drawRect(40, 50, 50, 60);
    g.setColor(Color.blue);
    g.drawString("Hello World", 80, 40);
    g.setColor(Color.green);
    g.fillOval(120, 100, 40, 40);
    g.setColor(Color.pink);
    g.fillArc(30, 120, 70, 70, 60, 120);
    g.setColor(Color.gray);
    g.fill3DRect(90, 120, 20, 20, true);
    g.setColor(Color.black);
    g.drawOval(120, 100, 40, 40);
    g.drawArc(30, 120, 70, 70, 60, 120);
  }

  public static void main(String args[]) {
    GraphicsTest gt = new GraphicsTest();
  }
}