使用方法加载输入

Question

我一直在寻找一种通过方法加载输入的方法，以便用户可以操作菜单。

到目前为止，我有这个：

public static char printMenu(){
  char option = ' ';
  Scanner load = new Scanner(System.in);
  System.out.println("\nMENU\nc - blah blah blah");
  option = load.next().charAt(0);
  System.out.println(option);
  return option;
}

但是当我在这里打电话时：

 System.out.println("You entered: "+storage);
  char menuOpt = ' ';
  while(menuOpt != 'q'){
     menuOpt = printMenu();

并输入字母c然后输入q。它给了我：

You entered: Hello my name is Kong.

MENU
blah blah blah

Choose an option:
Exception in thread "main" java.util.NoSuchElementException
    at java.util.Scanner.throwFor(Scanner.java:907)
    at java.util.Scanner.next(Scanner.java:1416)
    at AuthoringAssistant.printMenu(AuthoringAssistant.java:10)
    at AuthoringAssistant.main(AuthoringAssistant.java:36)

我认为，因为它是一个char返回类型，我可以使用它吗？我清楚地看到我错了。我在俯瞰什么？

谢谢。

对于Aify：

  import java.util.Scanner;

public class AuthoringAssistant {


   public static char printMenu(){
      char option = ' ';
      Scanner load = new Scanner(System.in);
      System.out.println("\nMENU\nc - Number of non-whitespace characters\nw - Number of words\nf - Find text\nr - Replace all !'s\ns - Shorten spaces\nq - Quit\n\nChoose an option:");
      option = load.nextLine().charAt(0);
      System.out.println(option);
      return option;
   }

   public static int getNumOfNonWSCharacters(String storage){
      int n = 0;
      int amount = 0;
      for(n=0;n<storage.length();++n){
         if(storage.charAt(n) != ' '){
            ++amount;
         }
      }
      return amount;
   }


   public static void main(String[] args) {
      String storage = "";
      Scanner scan = new Scanner(System.in);
      System.out.println("Enter a sample text:");
      storage = scan.nextLine();
      System.out.println();
      System.out.println("You entered: "+storage);
      char menuOpt = ' ';
      while(menuOpt != 'q'){
         menuOpt = printMenu();
         if(menuOpt == 'c'){
            int amount = getNumOfNonWSCharacters(storage);
            System.out.println("Number of non-whitespace characters: "+amount);
         }

      }


      return;
   }
}