
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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defined the cat class in full

Transcribed Image Text:2.
The class PetShop has a single field as defined below:
private ArrayList<Pet> petList;
Define a method to print out the details of all cats in petList in PetShop.

Transcribed Image Text:1.
An abstract class called Pet is defined below:
public abstract class Pet
{
}
•
private String id;
private String name;
private static int count = 0;
●
public Pet (String name)
{
}
count++;
id="P" + count;
this.name = name;
public String toString()
{
}
return "ID: " +id+ ", Name:
abstract public void sound ();
The Cat class is a subclass of the Pet class. The class specifications are given below:
It has a private field named age to record the cat's age.
The class constructor sets both name and age fields of the cat with the given parameter
values. The field age is set to 0 if the given value is negative.
It provides an accessor method for the field age.
It overwrites the toString method to return a string consisting of the cat's ID, name
and age. e.g.
ID: P15, Name: Molly, Age: 4
+ name;
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