interf.java

public class JavaApplication1 {

    /**
     */
    
    // Interface just contains the definations that needs to be implemented whoever 
    // conforms to the Animal interface - It's like a basketball coach who doesn't know 
    // how to play but can teach other about it. 
    public interface Animal{
        public String eat();
        public void run();
        public void jump();
    }
    
    
    public class ZooAnimals implements Animal{
        
        public String eat;
        public String run;
        public String jump;
        
        // This is a constructure method. 
        public ZooAnimals(String eat, String run, String jump){
            this.eat = eat;
            this.jump = jump;
            this.run = run;
        }
        
        @Override
        public String eat() {
            return this.eat;
        }

        @Override
        public void run() {
            System.out.println(this.run);
        }

        @Override
        public void jump() {
           System.out.println(this.jump);
        }
    
    }
    
    public void animalInformation(){
        ZooAnimals x;
        x = new ZooAnimals("Eat fresh", "Can run fast", "Cannot jump high");
        String result = x.eat();
        System.out.println(result);
    }
 
    public static void main(String[] args) {
        // TODO code application logic here
        JavaApplication1 j1 = new JavaApplication1();
        j1.animalInformation();
    
    }
    
}