Question

编写一个APPLET,要求在界面上绘制一矩形,并且绘制矩形的内切椭圆和矩形的两条对角线

Answer 1

按照你的要求编写的Java Applet程序如下:

import java.applet.Applet;

import java.awt.Graphics;

public class GGG extends Applet{

 public void init(){

  setSize(300,300);

 }

 public void paint(Graphics g){

  super.paint(g);

  g.drawRect(50, 50, 200, 100);

  g.drawOval(50, 50, 200, 100);

  g.drawLine(50, 50, 250, 150);

  g.drawLine(50, 150,250, 50);

 }

}

Answer 2

import java.applet.Applet;
import java.awt.Graphics;

public class Ticket extends Applet
{
/**
*
*/
public Ticket()
{
super();
}

private static final long serialVersionUID = 2787645621825874902L;

public void init()
{
}

public void paint(Graphics g)
{
int l = 100, t = 100, r = 400, b = 300;
g.drawRect(l, t, r, b);
g.drawOval(l, t, r, b);
g.drawLine(l, t, r + l, b + t);
g.drawLine(r + l, t, l, b + t);
}
}