mydraw1.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 MyDraw1{
	public MyDraw1(){
		Frame f = new Frame("图形处理实例");
		f.setLayout(new BorderLayout(0,0));
		f.addWindowListener(this);
		f.add(new Label("画一个椭圆"), BorderLayout.NORTH);
		f.add(new Oval(), BorderLayout.CENTER);
		f.setSize(400, 200);
		f.setVisible(true);
		
	}
	public static void main(String[] args){
		new MyDraw1();
	}
	class Oval extends Panel{
		public void paint(Graphics g){
			g.setColor(Color.blue);
			g.drawOval(100, 10, 200, 100);
			g.drawString("在面板上画椭圆!", 160, 60);
		}
	}
}