随机数字组成密码

最新推荐文章于 2022-02-22 11:20:04 发布

最新推荐文章于 2022-02-22 11:20:04 发布 · 231 阅读

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#Random #StringBuffer

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本文介绍了一种使用Java编程语言通过`Random`类生成随机数的方法，并展示了如何将这些随机数应用于不同的数值范围内。通过实例演示了如何创建一个方法，接收参数指定范围和长度，从而生成特定格式的随机字符串。


private static Random random = new Random();

    public static String getRandomNumber(String[] range,int rangeLength,int length){

    	StringBuffer sb = new StringBuffer();

	      for(int i=0;i<length;i++){

	           sb.append(String.valueOf(range[random.nextInt(rangeLength)]));

	       }

	        return sb.toString();

	    }

   public static void main(String[] args) {

      String[] range = {"0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","A","B","C"};

	      System.out.println(getRandomNumber(range, 20, 6));

   }