Answered: in java Create class Cat . Add…

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

in java

Create class Cat
. Add properties
What characteristics do they have?
Name, age, color, type (domestic / feral), etc.
What color(s) might they have?
White, cream, fawn, Cinnamon, Chocolate, Red, Lilac, Blue, Black,
Lavender, etc.
Add methods
eat(), play(), etc.
Constructors?
A class provides a special type of methods, known as constructors, which are
invoked to construct objects from the class
Create 2 different constructor with different initialization parameters
How to get the number of cats?
Add a static variable and a static method
.

Test Cat class by creating 2 Cat instances

Expert Solution

Step 1: The algorithm for the Java code provided to create a Cat class

Tthe algorithm for the Java code provided to create a Cat class with properties, methods, constructors, and a static variable to count the number of cat instances:

Create a Class:

Define a class called Cat.

Declare Properties:

Declare private instance variables for the following properties:

name (String): to store the cat's name.
age (int): to store the cat's age in years.
color (String): to store the cat's color.
type (String): to store the cat's type, with a default of "domestic."

Declare Static Variable:

Declare a private static integer variable named catCount to keep track of the number of cat instances. Initialize it to 0.

Constructors:

Define two constructors:

The first constructor takes four parameters (name, age, color, type) and initializes the instance variables. It also increments the catCount variable by 1.
The second constructor takes three parameters (name, age, color) and sets the type to "domestic" by default. It calls the first constructor to initialize the instance variables and increments the catCount variable.

Define Methods:

Implement the following methods:

eat(): Prints a message indicating that the cat is eating.
play(): Prints a message indicating that the cat is playing.
getCatCount(): A static method that returns the value of the catCount variable.
displayCatInfo(): Prints the cat's information, including name, age, color, and type.

Main Method:

Inside the main method:

Create two Cat instances, cat1 and cat2, using the constructors.
Call the eat() and play() methods on the cat instances to simulate actions.
Display the information for each cat using the displayCatInfo() method.
Retrieve the total number of cat instances using the getCatCount() static method and display it.

End of Program:

End the program.

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