Java，在我的代码中只有第一个for语句有效

刚开始学习Java和一般编程，我需要输入50个字符，计算和显示元音、辅音、数字和特殊字符。在我的元音的第一个for语句之后，它不再正常工作了，我不知道为什么它不工作，所以任何提示都会有帮助，谢谢

import java.util.Scanner;

public class CharArray50 {
  static Scanner scanner = new Scanner(System.in);

  public static void main() {
    int z = 0;
    do {
      String Str50 = "";
      int Vowelsnum = 0;
      int Consonantsnum = 0;
      int Digitsnum = 0;
      int SpecialCharnum = 0;
      System.out.print("Input 50 Characters Max: ");
      Str50 = scanner.nextLine();
      Str50 = Str50.toLowerCase();
      System.out.println("Characters: " + Str50);
      System.out.print("Vowels: ");
      for (int x = 0; x < Str50.length(); x++) {
        char Char50 = Str50.charAt(x);
        if ((Char50 == 'a')
            || (Char50 == 'e')
            || (Char50 == 'i')
            || (Char50 == 'o')
            || (Char50 == 'u')) {
          Vowelsnum += 1;
          System.out.print(" " + Char50);
        }
      }
      System.out.println("\nNumber of Vowels: " + Vowelsnum);
      System.out.print("Consonants: ");
      for (int a = 0; a < Str50.length(); a++) {
        char Char50 = Str50.charAt(a);
        if ((Char50 == 'b')
            || (Char50 == 'c')
            || (Char50 == 'd')
            || (Char50 == 'f')
            || (Char50 == 'g')
            || (Char50 == 'h')
            || (Char50 == 'j')
            || (Char50 == 'k')
            || (Char50 == 'l')
            || (Char50 == 'm')
            || (Char50 == 'n')
            || (Char50 == 'p')
            || (Char50 == 'q')
            || (Char50 == 'r')
            || (Char50 == 's')
            || (Char50 == 't')
            || (Char50 == 'v')
            || (Char50 == 'w')
            || (Char50 == 'x')
            || (Char50 == 'y')
            || (Char50 == 'z'))
          ;
        {
          Consonantsnum += 1;
          System.out.print(" " + Char50);
        }
      }
      System.out.println("\nNumber of Consonants: " + Consonantsnum);
      System.out.print("Digits: ");
      for (int b = 0; b < Str50.length(); b++) {
        char Char50 = Str50.charAt(b);
        if ((Char50 == '0')
            || (Char50 == '1')
            || (Char50 == '2')
            || (Char50 == '3')
            || (Char50 == '4')
            || (Char50 == '5')
            || (Char50 == '6')
            || (Char50 == '7')
            || (Char50 == '8')
            || (Char50 == '9'))
          ;
        {
          Digitsnum += 1;
          System.out.print(" " + Char50);
        }
      }
      System.out.println("\nNumber of Digits: " + Digitsnum);
      System.out.print("Special Characters: ");
      for (int c = 0; c < Str50.length(); c++) {
        char Char50 = Str50.charAt(c);
        if ((Char50 == '~')
            || (Char50 == '`')
            || (Char50 == '!')
            || (Char50 == '@')
            || (Char50 == '#')
            || (Char50 == '$')
            || (Char50 == '%')
            || (Char50 == '^')
            || (Char50 == '&')
            || (Char50 == '*')
            || (Char50 == '(')
            || (Char50 == ')')
            || (Char50 == '-')
            || (Char50 == '_')
            || (Char50 == '+')
            || (Char50 == '=')
            || (Char50 == '{')
            || (Char50 == '}')
            || (Char50 == '[')
            || (Char50 == ']')
            || (Char50 == '|')
            || (Char50 == '/')
            || (Char50 == ':')
            || (Char50 == ';')
            || (Char50 == '"')
            || (Char50 == '<')
            || (Char50 == '>')
            || (Char50 == ',')
            || (Char50 == '.')
            || (Char50 == '?'))
          ;
        {
          SpecialCharnum += 1;
          System.out.print(" " + Char50);
        }
      }
      System.out.println("\nNumber of Special Characters: " + SpecialCharnum);
    } while (z == 0);
  }
}

import java.util.Scanner；
公共类字符50{
静态扫描仪=新扫描仪（System.in）；
公共静态void main（）{
int z=0；
做{
字符串Str50=“”；
int-vouelsnum=0；
int辅音snum=0；
int Digitsnum=0；
int SpecialCharnum=0；
系统输出打印（“最多输入50个字符：”）；
Str50=scanner.nextLine（）；
Str50=Str50.toLowerCase（）；
System.out.println（“字符：+Str50”）；
系统输出打印（“元音：”）；
对于（int x=0；x

在if语句后面有分号：）

这里有很多代码需要查看（请学习设置代码的格式！这有助于包括您在内的所有人阅读它！从一开始就学会正确使用它会带来好处），但立即跳出的是

if

语句中的

；

：

if（something）；{

：删除

；

。啊，非常感谢@AndyTurner！很抱歉，我是新手，所以我甚至没有检查它的结果，我似乎没有在元音if语句中添加；，但在其他每个if语句中都添加了；。它现在起作用了。您可能想知道一个更简洁地检查字符是否在某些集合中的技巧，例如，对于元音：

如果（“aeiou”.indexOf（Char50）>=0{…}

。哦，哇，谢谢你，这要简洁得多，我会记住的，谢谢你。