Q4 120 pts) (classes) Design a class named Item that contains the following inst

Question

Q4 120 pts) (classes) Design a class named Item that contains the following instance variables: A string data field named name for the item name. An int data field named quantity for the item quantity. A double data field named previousPrice that stores the item price for the previous day A double data field named currentPrice that stores the item price for the current time. It contains the following methods: A constructor that creates an item with specified name, quantity and previousPrice. A set and get method for each instance variable. A method named getChangePercent0 that returns the percentage changed from previous Price to currentPrice. Implement the class then write a test program that creates an Item object with the item name Desktop, the quantity 3, and the previous price of 200 KD. Do the following: Set a new current price to 250 KD. Display the price change percentage. Print the total current price. [Use the get method to print the quantity, name and current price of the item] Sample output Price change percentage 25.0% Total price of 3 Desktop 750.0 KD

Explanation / Answer

1) Item Class

public class Item {
   String Name;
   int Quantity;
   double previousDayPrice;
   double currentDayPrice;
  
   Item(String name, int quant, double Previousdayprice){
       this.Name = name;
       this.Quantity = quant;
       this.previousDayPrice = Previousdayprice;
   }

   public String getName() {
       return Name;
   }

   public void setName(String name) {
       Name = name;
   }

   public int getQuantity() {
       return Quantity;
   }

   public void setQuantity(int quantity) {
       Quantity = quantity;
   }

   public double getPreviousDayPrice() {
       return previousDayPrice;
   }

   public void setPreviousDayPrice(double previousDayPrice) {
       this.previousDayPrice = previousDayPrice;
   }

   public double getCurrentDayPrice() {
       return currentDayPrice;
   }

   public void setCurrentDayPrice(double currentDayPrice) {
       this.currentDayPrice = currentDayPrice;
   }
  
  
}

2) class to print Item class data

public class PrintIteminfomration {
   public static void main(String args[]){
       Item item1 = new Item("Desktop",3,200);
       item1.setCurrentDayPrice(250);
       int pricechangePercentage = (int) ((int)((item1.getCurrentDayPrice()-item1.getPreviousDayPrice())* 100)/item1.getPreviousDayPrice());
      
       System.out.println("Price change percentage = "+pricechangePercentage+"%");
       System.out.println("Total price od "+item1.getQuantity()+" "+item1.getName() + " = "+( item1.getCurrentDayPrice()*item1.getQuantity()));
   }
}

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