Question

Write an equals method for the Shirt class provided below. Two shirts are logically equivalent if they have the same size, color, and price.

public class Shirt {

private Size size;
private String color;
private double price;

enum Size { SMALL, MEDIUM, LARGE }

public Shirt(Size size, String color, double price) {
this.size = size;
this.color = color;
this.price = price;
}
public Size getSize() {
return size;
}
public String getColor() {
return color;
}
public double getPrice() {
return price;
}
public void setSize(Size size) {
this.size = size;
}
public void setColor(String color) {
this.color = color;
}
public void setPrice(double price) {
if(price > 0) {
this.price = price;
}
}
@Override
public String toString() {
return "Size = " + size + "\n" +
"Color = " + color + "\n" +
"Price = " + price + "\n";
}
}

Answer 1

code:

import java.util.*;

public class Shirt {

   private Size size;
   private String color;
   private double price;

   enum Size { SMALL, MEDIUM, LARGE }

   public Shirt(Size size, String color, double price) {
       this.size = size;
       this.color = color;
       this.price = price;
   }
   public Size getSize() {
   return size;
   }
   public String getColor() {
   return color;
   }  
   public double getPrice() {
   return price;
   }
   public void setSize(Size size) {
   this.size = size;
   }
   public void setColor(String color) {
   this.color = color;  
   }
   public void setPrice(double price) {
       if(price > 0) {
           this.price = price;
       }
   }
   @Override
   public String toString() {
   return "Size = " + size + "\n" +
   "Color = " + color + "\n" +
   "Price = " + price + "\n";
   }
  
   //equals method checks the conditions all the parameters are same or not
   public void equals(Shirt var1,Shirt var2)
   {
       if(var1.size.equals(var2.size) && var1.color.equals(var2.color) && var1.price==var2.price)
       {
           System.out.println("The two shirts are logically equivalent");
       }
       else
           System.out.println("The two shirts are not logically equivalent");
   }
   public static void main(String[] args)
   {
       Scanner sc=new Scanner(System.in);
       String s1,s2,color1,color2;
       double price1,price2;
      
       //Taking size of the both shirts and converting into enum Size
       System.out.println("Sizes are only SMALL,MEDIUM,LARGE");
       System.out.print("Enter the size of shirt 1:");
       s1=sc.nextLine();
       Size size1=Size.valueOf(s1.toUpperCase());
       System.out.print("Enter the size of shirt 2:");
       s2=sc.nextLine();
       Size size2=Size.valueOf(s2.toUpperCase());
       //Asking colors to the user
       System.out.print("Enter the color of shirt 1:");
       color1=sc.nextLine();
       System.out.print("Enter the color of shirt 2:");
       color2=sc.nextLine();
       //Asking price
       System.out.print("Enter the price of shirt 1:");
       price1=sc.nextDouble();
       System.out.print("Enter the price of shirt 2:");
       price2=sc.nextDouble();
       //Creating Shirt class objects
       Shirt obj1=new Shirt(size1,color1,price1);
       Shirt obj2=new Shirt(size2,color2,price2);
       System.out.println("Dimensions of shirt1:");
       //printing the data of the shirts
       String d1=obj1.toString();
       System.out.print(d1);
       System.out.println("Dimnesions of shirt2:");
       String d2=obj2.toString();
       System.out.print(d2);
       System.out.println();
       //using equals method to check the shirts are equivalent or not
       obj1.equals(obj1,obj2);
   }
}

outputs:

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