Lab #3: Inheritance The current class you have developed is an Inventory type. M
ID: 3720753 • Letter: L
Question
Lab #3: Inheritance The current class you have developed is an Inventory type. Most of you call it Inventory_Item (remember singular noun) A new class is created called Pets. It is less generic than the first one you developed. It includes general characteristics for ALL inventory items. We have added a new class called Food Use the concept of inheritance between Inventory_Item and Food, and between Inventory_ltem and Pets Each inheritance overloads the constructor of the Inventory_Item, depending on the parameters sent The main menu now asks before entering an inventory item if you want to enter a Food or Pets The print option also asks which one to print either Pets or Food.Explanation / Answer
//1.
package inventory;
public class Inventory_Item {
private String food_item;
private String pet_name;
public Inventory_Item() {
super();
}
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public String getFood_item() {
return food_item;
}
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public void setFood_item(String food_item) {
this.food_item = food_item;
}
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public String getPet_name() {
return pet_name;
}
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public void setPet_name(String pet_name) {
this.pet_name = pet_name;
}
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public Inventory_Item(String food_item, String pet_name) {
super();
this.food_item = food_item;
this.pet_name = pet_name;
}
public void print() {
System.out.println("pet: "+pet_name);
System.out.println("Food: "+food_item);
}
}
//2.
package inventory;
public class Pets extends Inventory_Item{
private String pet_name;
public Pets() {
super();
}
public Pets(String pet_name) {
super();
this.pet_name = pet_name;
}
public String getPet_name() {
return pet_name;
}
public void setPet_name(String pet_name) {
this.pet_name = pet_name;
}
@Override
public String toString() {
return "Pets [pet_name=" + pet_name + "]";
}
public void print() {
System.out.println(pet_name);
}
}
//3.
package inventory;
public class Food extends Inventory_Item {
private String food_item;
public Food() {
super();
}
public Food(String food_item) {
super();
this.food_item = food_item;
}
public String getFood_item() {
return food_item;
}
public void setFood_item(String food_item) {
this.food_item = food_item;
}
@Override
public String toString() {
return "Food [food_item=" + food_item + "]";
}
public void print() {
System.out.println(food_item);
}
}
//4.
package inventory;
import java.util.Scanner;
public class Main_Class {
public static void main(String[] a) {
Scanner sc=new Scanner(System.in);
System.out.println("Please type which you want to add: pets/food");
Inventory_Item p=null;
Inventory_Item p2=null;
String choice=sc.next();
if(choice.equals("pets")) {
System.out.println("Enter pet name:");
String name=sc.next();
p=new Pets(name);
}
else if(choice.equals("food"))
{
System.out.println("Enter food name:");
String food=sc.next();
p=new Food(food);
}
else {
System.out.println("Enter wrong choice:");
System.exit(0);
}
System.out.println("Please which you want to print: pets/food");
String choice2=sc.next();
if(choice2.equals("pets")) {
p.print();
}
else if(choice2.equals("food"))
{
p2.print();
}
else {
System.out.println("Wrong choice:");
}
}
}
/* output:-
Please type which you want to add: pets/food
pets
Enter pet name:
parrot
Please which you want to print: pets/food
pets
parrot
*/
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