java笔记003之 彩票号码生成器

package sxw_helloworld;

import java.awt.Color;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Point;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.util.Random;

import java.util.ArrayList;

public class HellowWorldClassextends Frame{

/**

* 

*/

privatestatic finallong serialVersionUID = 1L;

ArrayList list_point = new ArrayList();

ArrayList list_color = new ArrayList();

Random rd =new Random();

public void init() {

setSize(500,400);

setTitle("彩票号码生成器！（点击窗体任何位置重新生成）");

setVisible(true);

setLocationRelativeTo(null);

setResizable(false);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

addMouseListener(new MouseAdapter() {

public void mouseClicked(MouseEvent e) {

repaint();

}

});

}

public void paint(Graphics g) {

Random rd =new Random();

ArrayList list = new ArrayList();

g.drawString("本期中奖号码", 100, 100);

g.drawString("红色球是：", 100, 150);

g.drawString("蓝色球是", 100, 200);

for(inti = 0;i<6;i++){

int red = rd.nextInt(33)+ 1;

if (list.contains(red)) {

i--;

}

else {

list.add(red);

}

}

int blue = rd.nextInt(16)+1;

g.setColor(Color.blue);

g.drawString(blue +"", 200, 200);

g.setColor(Color.red);

for (inti = 0; i < 6;i++) {

g.drawString(list.get(i) +"", 200 + (i*50), 150);

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

new HellowWorldClass().init();

}

}