StackOverflow2013

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POCan I pass object from subclass to abstract class?
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copied!<p>This is my abstract class AbstractVehicles which implements Vehicles interface</p> <pre><code>public abstract class AbstractVehicles implements Vehicles{ } </code></pre> <p>and here's my CarImpl</p> <pre><code>public class CarImpl extends AbstractVehicles implements Car { private CarAI ai; private static final int CAR_FUEL_LEFT = 10; public CarImpl(){ super(FUEL_LEFT); this.ai = new CarAI(); } public void move(World w){ // AI is using here ai.act(w); } } </code></pre> <p>and here's my BicycleImpl</p> <pre><code>public class BicycleImpl extends AbstractVehicles implements Bicycle { private BicycleAI ai; private static final int BICYCLE_FUEL_LEFT = 10; public BicycleImpl(){ super(BICYCLE_FUEL_LEFT); this.ai = new BicycleAI(); } public void move(World w){ // AI is using here ai.act(w); } } </code></pre> <p>where interface of Car and Bicycle are marker Interface that</p> <pre><code>public interface Car extends Vehicles { } public interface Bicycle extends Vehicles { } </code></pre> <p>The question come here I have implemented an AI for car and Bicycle individually in other packages called BicycleAI and CarAI. But there code in their CarImpl and BicycleImpl are the same. So I would Like to add that into the abstract class, so that code can be reused. And class BicycleAI and class CarAI is implementing interface AI. </p> <p>As we can see above, their code for act is the same, but there AI objects are different. Is there anyway I can put this code into the abstract class?</p> <p>I tried to do this </p> <pre><code>public abstract class AbstractVehicles implements Vehicles{ protected AI ai; private int fuelLeft; public AbstractVehicles(int fuelLeft){ this.fuleLeft = fuelLeft AI ai = new AI(); } public void move(World w){ ai.act(w); // But I have no idea this is CarAI or BicycleAI } } </code></pre> <p>I am a bit confused about the constructor in AbstractVehicles and constructor in RabbitImpl. If I create an object RabbitImpl, and I call the move. </p>

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