随机产生一个号码并有选择的从硬盘里面选出一种类型的图片把这个号码显示出来-read one kind of picture and then use them to display a rand number

采用Random技术在网页中产生一个随机整数，可以将该技术用户网站的验证码的实现。-Random technology used in Web pages generate a random integer, the technology users can verify the site code implementation.

import java.util.* public class sanmen { public static void main(String[] args) { System.out.println("1:Keep the box you chose initially and open it .") System.out.println("2:Take the remaining box ,which the game show host did not o

猜数问题，实现了rand（）函数的随机，随着你猜的次数，他会做一个统计(The guessing problem implements the randomness of the rand () function and, as you guess, he makes a statistic)