circle.java

在linux下用java编写画圆饼图

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;

public class Circle extends JFrame {
	
	public void paint(Graphics g) {
		g.setColor(Color.RED);
		g.drawOval(30,60,100,100);
		g.drawRect(250,100,120,30);		
	}
	
	public void repaint() {
		getGraphics().drawOval(30,60,100,100);
		getGraphics().drawRect(250,100,120,30);
	}
	
	public static void main(String[] args) {
		Circle c=new Circle();
		c.setTitle("painting");
		c.setBounds(100,100,500,200);
		c.setVisible(true);
		c.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
	}
}