Question

JAVA !!!

EX 8.1Implementing a Menu Class

Problem StatementIn this Worked Example, our task is to write a class for displaying a menu. An object of this class can display a menu such as

1) Open new account

2) Log into existing account

3) Help

4) Quit

Reimplement the Menu class of Worked Example 8.1 so that it stores all menu items in one long string. Hint: Keep a separate counter for the number of options. When a new option is added, append the option count, the option, and a newline character.

Answer 1

Hi, Please go through code and output.

CODE:

public class Menu { // class Menu
   public String menuItems; // menu string
   public Integer counter; // counter
   public static void main(String[] args) // Main
   {
       Menu obj = new Menu(); // take object of Menu class
       obj.addItem("1) Open new account\n"); // add menu Item in string
       obj.addItem("2) Log into existing account\n");
       obj.addItem("3) Help\n");
       obj.addItem("4) Quit\n");
       obj.printMenu(); // print Menu Items
   }
   Menu()
   {
       menuItems = "";
       counter = 0;
   }
   public void addItem(String str) // add Item in string
   {
       menuItems += str;
       counter++; // increment counter
   }
   public void printMenu() // print Menu Items
   {
       System.out.println(menuItems);
   }
}

OUTPUT: