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// Animal interface

interface Animal {

void eat();

}

// TiredAnimal interface extending Animal

interface TiredAnimal extends Animal {

void sleep();

}

// Lion class implementing Animal and TiredAnimal

class Lion implements TiredAnimal {

public void eat() {

System.out.println("Lion is eating zebra.");

}

public void roar() {

System.out.println("Lion is roaring.");

}

public void sleep() {

System.out.println("Lion is sleeping.");

}

}

// Snake class implementing Animal and TiredAnimal

class Snake implements TiredAnimal {

public void eat() {

System.out.println("Snake is eating frog.");

}

public void slither() {

System.out.println("Snake is slithering.");

}

public void sleep() {

System.out.println("Snake is sleeping.");

}

}

// Example usage

public class Prog3b {

public static void main(String[] args) {

Lion lion = new Lion();

lion.eat();

lion.roar();

lion.sleep();

System.out.println("\n");

Snake snake = new Snake();

snake.eat();

snake.slither();

snake.sleep();

}

}