画笔

package lesson03;

import java.awt.*;

public class TestPaint {
    public static void main(String[] args) {
        new MyPaint().loadFrame();
    }
}
class MyPaint extends Frame {
    public void loadFrame(){
        setBounds(200,200,600,500);
        setVisible(true);
    }
    //画笔
    @Override
    public void paint(Graphics g) {
        //画笔,需要有颜色,画笔可以画画
        g.setColor(Color.red);
        g.drawOval(100,100,100,100);
        g.fillOval(100,100,100,100);//实心的圆

        g.setColor(Color.GREEN);
        g.fillRect(150,200,200,200);
        
        //养成习惯,画笔用完,将它还原到最初的颜色
    }
}