按要求生成随机字符串

Java生成随机字符串_西凉的悲伤博客-CSDN博客 工具类RandomString如下：import java.security.SecureRandom;import java.util.Locale;import java.util.Objects;import java.util.Random;public class RandomString { /** * 26个大写字母 */ public static final String upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ https://blog.csdn.net/qq_33697094/article/details/119957373