验证码

最新推荐文章于 2025-09-06 09:33:29 发布

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最新推荐文章于 2025-09-06 09:33:29 发布

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文章标签： java

原文链接：http://www.cnblogs.com/shadowduke/p/4873426.html

package 数字操作类;

import java.util.Random;

public class yanzhengma {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        String str = new String("0123456789abcdefghijklmnopqrstuvwxyzABCEEFGHIJKLMNOPQRSTUVWXYZ");
        
        int a;
        
        Random sj = new Random();
        
        System.out.print("验证码是：");
        
        for(int j = 0;j <= 4; j++)
        {
            a = sj.nextInt(62);
            
            System.out.print("" + str.charAt(a));
        }
        
    }

}