java - try/catch 捕获异常后继续执行循环

Question

一旦在此代码中捕获到异常，menuSystem 方法就会运行，但是一旦我输入数字，程序就会关闭并显示“构建成功”消息。一旦发生异常，有没有办法回到 while 循环？

public static void main(String[] args) {
   final UnitResults myUnit = new UnitResults(10, "Java");
   int option = menuSystem();

   try {
      while (option != 0) {
         final Scanner keyb = new Scanner(System.in);
         System.out.println("");
         switch (option) {
         }
      }
   } catch (Exception InputMismachException) {
      System.out.println("\nPlease Enter a Valid Number\n");
      option = menuSystem();
   }
}

Answer 1

将您的 try/catch 放入您的 while 循环:

    while (option != 0) {
        final Scanner keyb = new Scanner(System.in);
        System.out.println("");
        try {
            switch (option) {

            }
        } catch (Exception InputMismachException) {
            System.out.println("\nPlease Enter a Valid Number\n");
            option = menuSystem();
        }
    }