randnumber.java

来自「基于java开发的邮件系统」· Java 代码 · 共 17 行

package com.servlet;

import java.util.Date;
import java.util.Random;

public class RandNumber {
	
	public static String getRandomNumber(){
		Random rand = new Random();
		int  r = rand.nextInt(1000);
		String str = String.valueOf(r);
		String date = new java.text.SimpleDateFormat("MMdd").format(new Date());
		String buf = new StringBuffer().append(str).append(date).toString();
		return buf;
	}
}