class Animal {
    public void eat()
    {
        System.out.println("eat method");

    }
    public void sleep()
    {
        System.out.println("sleep method");

    }

}
class Bird extends Animal{

    public void eat() {
        super.eat();
        System.out.println("overide eat");
    }


    public void sleep() {
        super.sleep();
        System.out.println("override sleep");
    }

    public void fly()
    {
        System.out.println("in fly method");

    }
}
class Animals{
    public static void main(String[] args) {
        Animal a =new Animal();
        Bird b = new Bird();
        a.eat();
        a.sleep();
        b.eat();
        b.sleep();
        b.fly();
    }
}