2. Write a class called Item. Each item has a number (integer), a name (string),

Question

2. Write a class called Item. Each item has a number (integer), a name (string), and a price (double). The class should have only one constructor with 2 parameters only. The constructor initializes the item name and number according to the parameters' values, and initializes price to some random double value that is between 0 and 100. The class should also have a void method called show to print the information (number, name, and price) of an Item object; a method called discount that takes a discount amount as a parameter (percentage of discount is 10, 20 or 50%) and then returns the price after applying the discount without changing the price value of the object. Don't include any setters or getters. Add a main function to create different items and display them.

Explanation / Answer

package practice;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Item {

   int number;
   String name;
   double price;

   public static void main(String[] args) {
       Item it = new Item();
   }

   Item() {
       Scanner sc = new Scanner(System.in);
       System.out.println("Enter the number(discount) e, 10 or 20 50");
       this.number = sc.nextInt();
       Scanner sp = new Scanner(System.in);
       System.out.println("Enter the name of item");
       this.name = sp.nextLine();
       Scanner st = new Scanner(System.in);
       System.out.println("Enter the price of item");
       this.price = st.nextInt();
       display();
   }

   void display() {
       List disp = discount(this.number, this.name, this.price);
       System.out.println("Printing the discount% , name of item followed by discounted price");
       for (Object di : disp) {
           System.out.println(di);
       }
   }

   List discount(int number, String name, double price) {
       int n = this.number;
       String d = this.name;
       double p = this.price;
       int s = 100 - n;
       int amount = (int) ((s * p) / 100);
       List ls = new ArrayList<>();
       ls.add(n);
       ls.add(d);
       ls.add(amount);
       return ls;
   }

}

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