四位随机验证码，如何做到更简洁？？

最新推荐文章于 2024-01-15 00:30:07 发布

翻译最新推荐文章于 2024-01-15 00:30:07 发布 · 580 阅读

class Validator {
public static void main(String[]args) {
  System.out.println(getRandom());
}
public static int getRInt() {
  return (int)(Math.random()*10);
}
public static char getRCharLower() {
  return (char)((Math.random()*26)+97);
}
public static char getRCharUpper() {
  return (char)((Math.random()*26)+65);
}
public static int getPos() {
  return (int) (Math.random()*3);
}
public static String getRandom() {
  String str = "";
  for(int i=0;i<4;i++) {
   switch(getPos()) {
    case 0:
    str+=getRInt();
    break;
    case 1:
    str+=getRCharLower();
    break;
    case 2:
    str+=getRCharUpper();
    break;
   }
  }
  return str;
}
}