// Here we define a basic component of a space ship
// Any part that implements the interface ESEngine
// can replace that part in any ship

public class ESUFOBossEngine implements ESEngine{
	
	// EnemyShip contains a reference to the object
	// ESWeapon. It is stored in the field weapon
			
	// The Strategy design pattern is being used here
			
	// When the field that is of type ESUFOGun is printed 
	// the following shows on the screen
	
	public String toString(){
		return "2000 mph";
	}
	
}