package com.test.util.charactor;

import java.util.Random;

public class CharaterUtils {

	public static String getRandomString(int length){
		String str="1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
		Random random=new Random();
		
		StringBuffer sb=new StringBuffer();
		
		for(int i=0;i<length;i++){
			
			int number =random.nextInt(62);
			
			sb.append(str.charAt(number));
		}
		return sb.toString();
	}
	public static void main(String[] args) {
		System.out.println(getRandomString(5));
	}
}