mydrawarc1.java

这个是JAVA程序基础书上第7章书实现的代码

import java.awt.*;
import java.awt.event.*;
class MyDrawArc1{
	Frame f = new Frame();
	MyCanvas c = new MyCanvas();
	MyDrawArc1(){
		f.setSize(350, 200);
		f.setLayout(new BorderLayout(0,0));
		f.add(c, BorderLayout.CENTER);
		f.addWindowListener(new MyWindowAdapter());
		f.setVisible(true);
	}
	public static void main(String[] args){
		new MyDrawArc1();
	}
	//内部类
	class MyCanvas extends Canvas{
		public void paint(Graphics g){
			g.drawOval(20, 20, 60, 60);
			g.setColor(Color.blue);
			g.fillOval(100, 20, 80, 60);
			g.setColor(Color.red);
			g.drawArc(200, 20, 100, 60, 30, 60);
			g.setColor(Color.green);
			g.fillArc(100, 100, 100, 60, 40, 80);
			g.setColor(Color.gray);
			g.fillArc(180, 100, 60, 60, 20, -100);
		}
	}
	//内部类 
	class MyWindowAdapter extends WindowAdapter{
		public void windowClosing(WindowEvent e){
			System.exit(0);
		}
	}
}