Develop an object oriented program in Java that will keep track of pets treated in an animal hospital. Detail class specifications (data members, methods and access modifiers) are described below. Please note the following requirements:

After writing your classes, write a unit test to test them.Submit four(4) java files below.

1. Class: Pet

The class should have the following public data members - pet name (a String), owner name (a String), color (a String), and sex (an integer, but it will only hold one of the following four public static final int values: MALE, FEMALE, SPAYED and NEUTERED. You should define these four as static in your class).

Following are the public methods that this class should provide:

void setPetName();

String getPetName();

void setOwnerName();

String getOwnerName();

void setColor();

String getColor();

void setSex(int sexid);

String getSex(); // Should return the string equivalent of the gender, e.g the string "male" etc.

String printPetInfo(); // Should display the name, owner's name, age, color, and gender (use getSex());

A Sample (preferred) of printPetInfo is as follows:

Spot owned by Mary

Color is Black and White

Sex is Male

2. Class: Cat

This class should extend the Pet class. In addition to the data members and methods inherited from Pet, the Cat class should have a privatehairLengthdata member, which is a string.

Following are the public methods that this class should provide:

Cat (String name, String ownerName, String color, String hairLength); // Constructor

void setHairLength();

String getHairLength(); // returns the string hairLength

String printCatInfo()// Should display the pet as Cat and hair length and a complete description of the cat included in the Pet parent class

A Sample (preferred) of printCatInfo is as follows:

CAT:

Friskies owned by Bob

Color is black

Sex is spayed

Hair is short

3. Class: Dog

This class should extend the Pet class. In addition to the data members and methods inherited from Pet, the Dog class should have a privatesizedata member, which is a string.

Following are the public methods that this class should provide:

Dog (String name, String ownerName, String color, String size);// Constructor

void setSize();

String getSize(); // returns the string size

String printDogInfo(); // Should display the pet as Dog and size and a complete description of the dog included in the Pet parent class

A Sample (preferred) of printDogInfo is as follows:

DOG:

Spot owned by Susan

Color: white

Sex: spayed

Size: medium