【java学习】GUI编程画图

使用GUI编程画图，给个小例子：

import java.awt.*;

public class TestPaint {
	public static void main(String[] args) {
		new PaintFrame().launchFrame();
	}
}

class PaintFrame extends Frame {
	
	public void launchFrame() {
		setBounds(200,200,640,480);
		setVisible(true);
	}
	
	public void paint(Graphics g) {
		Color c = g.getColor();
		g.setColor(Color.red);
		g.fillOval(50, 50, 30, 30);
		g.setColor(Color.green);
		g.fillRect(80,80,40,40);
		g.setColor(c);
	}