Two ways to generate random strings in Java

This article mainly introduces two methods of generating random strings in Java in detail. It has certain reference value. Interested friends can refer to it.

The examples in this article share Java with you. The specific code to generate a random string is for your reference. The specific content is as follows

import java.util.Random;
public class CharacterUtils {
//方法1：length为产生的位数
  public static String getRandomString(int length){
    //定义一个字符串（A-Z，a-z，0-9）即62位；
    String str="zxcvbnmlkjhgfdsaqwertyuiopQWERTYUIOPASDFGHJKLZXCVBNM1234567890";
    //由Random生成随机数
        Random random=new Random();  
        StringBuffer sb=new StringBuffer();
        //长度为几就循环几次
        for(int i=0; i
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