import java.awt.*;
import java.applet.Applet;
public class triangle extends Applet {
     public void paint(Graphics g) {
     g.setColor(Color.red);  //設置畫筆顏色為紅色
        g.drawLine(80,20,20,100);
        g.drawLine(20,100,140,100);
        g.drawLine(140,100,80,20);
     g.setColor(Color.blue);  //設置畫筆顏色為蘭色
        g.drawString("三角形",65,80);
   }
}