Zurück zum Hauptmenü aus dem Untermenü in Java

Question

So hat mein derzeitiger Code das Problem, dass aus dem Untermenü, wenn ich Exit (4) drücken Sie mich nicht zum Hauptmenü zurück, es wiederholt nur die if-Anweisung innerhalb der Hauptmenü While-Schleife, die das Untermenü initiiert. Wie behebe ich das?

import java.util.Scanner; 
import java.util.*; 
import java.util.ArrayList; 

public class StarberksInterface 
{ 


public static void main(String args[]) 
{ 

    Scanner console = new Scanner(System.in); 
    store = new Store(); 
    String str, sName1, sName2, name; 
    char c; 
    int n=0; 
    sName1 = "Callahan"; 
    sName2 = "Lambton"; 


    //This is the main menu that will be displayed first. 
    System.out.println("  MAIN MENU FOR MANAGEMENT SYSTEM"); 
    System.out.println("==============================================="); 
    System.out.println("1. CHOOSE STORE"); 
    System.out.println("2. DISPLAY STORES"); 
    System.out.println("3. LOAD STORE VIA FILE"); 
    System.out.println("4. SAVE STORE TO FILE "); 
    System.out.println("5. EXIT PROGRAM"); 
    System.out.println("==============================================="); 

    while(n!=5)// Exits the program when 4 is pressed 
     { 
      System.out.print("\n Please enter option 1-4 to continue...: "); 
      n = Integer.parseInt(System.console().readLine()); 
      // Reads user input and takes them to selected code. 
      if (n>5||n<1) 
      { 
       System.out.print("Invalid input, please try again..."); 
       continue; 
      } 
      if (n==1)// Takes to option 1 or sub menu 
      { 
       str="y"; 

       while(str.equals("y")||str.equals("Y")) 
       { 
        System.out.println("Enter a store name [Callahan or Lambton] "); 
        name = console.next(); 
        if (sName1.equals(name)|| sName2.equals(name)) 
        { 
         StarberksInterface.subMenu(); 
         return; 
        } 
        else 
        { 
         System.out.println("There is no store under this name. Please try again."); 
        } 

       } 

      } 
      if (n==2)// Gathers products in stores and displays the number of products 
      { 
       System.out.println(" Store data is being displayed."); 
       System.out.println("==============================="); 
       System.out.println("Store: Callahan"); 
       System.out.println("  Number of products: "+store.getProductListSize()); 

      } 
     } 
} 




public static void subMenu() 
{ 
Scanner console = new Scanner(System.in); 
String str; 
char c; 
int n=0; 


     // this will be the sub menu that gets displayed. 
     System.out.println("  INVENTORY MANAGEMENT SYSTEM"); 
     System.out.println("==============================================="); 
     System.out.println("1. ADD PRODUCT DATA"); 
     System.out.println("2. VIEW SINGLE PRODUCT DATA"); 
     System.out.println("3. DELETE PRODUCT"); 
     System.out.println("4. DISPLAY ALL PRODUCTS IN STORE"); 
     System.out.println("==============================================="); 
     System.out.println("5. EXIT SUB MENU"); 

     while(n!=5)// Exits the program when 4 is pressed 
     { 
      System.out.print("\n Please enter option 1-5 to continue...: "); 
      n = Integer.parseInt(System.console().readLine()); 
      // Reads user input and takes them to selected code. 
      if (n>5||n<1) 
      { 
       System.out.print("Invalid input, please try again..."); 
       continue; 
      } 
      if (n==1)// Takes to option 1 or addItem() 
      { 
       str="y"; 
       while(str.equals("y")||str.equals("Y")) 
       { 

        StarberksInterface.addItem(); 
        System.out.print("Would you like to enter another product ? (Y or N) : "); 
        str = console.next(); 
       } 
       continue; 
      } 
      if (n==2)// Takes to option 2 or prodData 
      { 
       str="y"; 
       while(str.equals("y")||str.equals("Y")) 
       { 
        StarberksInterface.prodData(); 
        System.out.println("\n***************************************************\n"); 
        System.out.print("Stay viewing this page? (Y or N) "); 
        str = console.next(); 

       } 
       continue; 
      } 

      if (n==3)// Takes to option 3 or delete item 
      { 
       System.out.print("Delete a product"); 
       continue; 
      } 

      if (n==4)// Takes to option 4 or view all products in store 
      { 
       System.out.print("Displaying all products in store"); 
       continue; 
      } 
     } 
      if (product != null)// If there is information on the system 
      // then the user will have the option to view data, before the program quits 
      { 
       System.out.println("\n***************************************************\n"); 
       System.out.println("\nAre you sure you want to quit? There is information stored on a product. "); 
       System.out.println("\nWould you like to view if information? (Y/N) "); 
       str=""; 
       str = console.next(); 
       while(str.equals("y")||str.equals("Y")) 
       { 

        StarberksInterface.prodData(); 
        return; 
       } 

      } 

      else 
      { 
       System.out.print("\nThank you for using this inventory management software.\n"); 
       System.out.print("Developed by Xavier Edwards"); 
       System.out.println("\n***************************************************\n"); 
      } 

Answer 1

Ändern der return-Anweisung in

if (sName1.equals(name) || sName2.equals(name)) { 
    StarberksInterface.subMenu(); 
    return; 
} 

zu

if (sName1.equals(name) || sName2.equals(name)) { 
    StarberksInterface.subMenu(); 
    break; 
} 

das Menü erneut drucken Sie müssen das Hauptmenü innerhalb der Schleife verschieben :

while (n != 5)// Exits the program when 4 is pressed{ 
    ..... 
} 

Answer 2

Sie müssen das Hauptmenü innerhalb dieser Schleife bewegen:

while(n!=5)/ 
{ 
... 
} 

Answer 3

try

n = Integer.parseInt(System.console().readLine()); 

von

n = console.nextInt(); 

in beiden Orten