Cat class slightly more interesting

public class Cat {

// instance variables… These are used and visible throughout the class.
//They are the backbone of our class.
int age;
String color;
String name;
boolean isHappy;


// constructors…  The construction crew…. how to build the perfect cat

public Cat() {

}

public Cat ( int age, String name, String color, boolean isHappy ) {
    this.age = age;
    this.name = name;
    this.color = color;
    this.isHappy= isHappy;

}

// methods…  the things our cat does and the place
//where changes can be made to our cat or information retrieved

public int getAge() {
    return age;
}

public String getName() {
    return name;
}

public String getColor() {
    return color;
}
// Now you make a get color method…

public void setAge(int age) {
this.age = age;
}

public void setName(String name) {
    this.name = name;
}

public void setColor(String color) {
    this.color = color;
}

public void setIsHappy(boolean isHappy) {
    this.isHappy = isHappy;
}
// Now how about those other behaviors…

public void eat(int num) {
    for (int i=0; i< num; i++)
    System.out.println(" Chew, chew, chew ") ;

}

public void drink() {
    System.out.println("Drink, drink, drink" );
}

public void talk() {
    if (isHappy)
        System.out.println("Meow");
    else
        System.out.println("RAAWWRRR");
}

public void sleep() {
    System.out.println("Zzzzzzzzz");
}
public void happyBirthday() {
    this.age++;
    System.out.println("Happy Birthday "+ this.name);
    System.out.println(this.age);
}


}