You must modify the class Owner provided below, so that objects of this class can hold objects of both classes Dog and Cat in their array. Note you must also modify the methods add and getPet accordingly.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Your are given the following classes:
public abstract class Animal{
public abstract void talk();
}
public class Dog extends Animal{
public void talk(){
System.out.println ("Woof");
}
}
public class Cat extends Animal{
public void talk(){
System.out.println ("Meow");
}
}
You must modify the class Owner provided below, so that objects of this class can hold objects of both classes Dog and Cat in their array.
Note you must also modify the methods add and getPet accordingly.
Answer: (penalty regime: 0 %)
Reset answer
public class Owner{
private Dog[] dogs;
private int numDogs=0;
3
4
public Owner(){
dogs = new Dog[5];
}
6.
7
8
public void add(Dog a){
dogs[numDogs] = a;
numDogs++;
}
9
10
11
12
13
public Dog getPet (int index){
return dogs[index];
}
14
15
16
17 }
Transcribed Image Text:Your are given the following classes: public abstract class Animal{ public abstract void talk(); } public class Dog extends Animal{ public void talk(){ System.out.println ("Woof"); } } public class Cat extends Animal{ public void talk(){ System.out.println ("Meow"); } } You must modify the class Owner provided below, so that objects of this class can hold objects of both classes Dog and Cat in their array. Note you must also modify the methods add and getPet accordingly. Answer: (penalty regime: 0 %) Reset answer public class Owner{ private Dog[] dogs; private int numDogs=0; 3 4 public Owner(){ dogs = new Dog[5]; } 6. 7 8 public void add(Dog a){ dogs[numDogs] = a; numDogs++; } 9 10 11 12 13 public Dog getPet (int index){ return dogs[index]; } 14 15 16 17 }
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