How to avoid large if-statements and instanceof

Question

Animal

public abstract class Animal {
 String name;

 public Animal(String name) {
  this.name = name;
 }

}

Lion<

Answer 1

Consider adding an interface for the action (Roar, Run away, etc) which is set on the animal in the constructor. Then have an abstract method such as act() on the Animal class which gets called similar to what Adeel has.

This will let you swap in actions to act out via a field at any time.