package com.java.tools;

import java.util.Random;

public class RandomCipher {
	
	public static void main(String[] args) {
		
		StringBuffer sb = new StringBuffer();
        for (int i = 0; i < 6; i++) {
            int a = Math.abs((new Random()).nextInt(57));// 产生0~57的随机数
            if (a <= 9) {// 将0~9转为char的0~9
                sb.append((char) (a + 48));
            } else if (a < 33) {// 将10~33转为char的A~Z
                if((a + 55) == 79 || (a + 55) == 73){
                    sb.append((char) (a + 63));
                }else{
                    sb.append((char) (a + 55));
                }
            } else {// 将33~57转为char的a~z
                sb.append((char) (a + 63));
            }
        }
        String RandomCipher=sb.toString();
        System.out.println(RandomCipher+"  <===临时密码");
		
		
	}
	
}