Bus.java

package v3;

public class Bus extends Vehicle {
	private int fuelConsumption;
	
	
	public Bus(int id, int maxSpeed, int fuelConsumption) {
		super(id, maxSpeed);
		this.fuelConsumption = fuelConsumption;
	}

	public int getFuelConsumption() {
		return fuelConsumption;
	}

	public void setFuelConsumption(int fuelConsumption) {
		this.fuelConsumption = fuelConsumption;
	}

	@Override
	public String toString() {
		return "Bus [fuelConsumption=" + fuelConsumption + ", getMaxSpeed()="
				+ getMaxSpeed() + ", getId()=" + getId() + "]";
	}


}

BusDepot.java

package v3;

public class BusDepot extends Depot<Bus>{

	public BusDepot(String name) {
		super(name);
	}

	public int totalFuelConsumption(){
		int sum=0;
		for(int i=0; i<this.size(); i++){
			sum+=this.get(i).getFuelConsumption();
		}
		return sum;
	}

	@Override
	public String toString() {
		return "BusDepot [totalFuelConsumption()=" + totalFuelConsumption()
				+ ", getName()=" + getName() + ", asList()=" + asList() + "]";
	}

	
}

Depot.java

package v3;

import java.util.LinkedList;

public class Depot<T> {
	private LinkedList<T> vehicles = new LinkedList<T>();
	private String name;

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


	public int size() {
		return vehicles.size();
	}


	public boolean add(T e) {
		return vehicles.add(e);
	}


	public void clear() {
		vehicles.clear();
	}


	public T get(int index) {
		return vehicles.get(index);
	}


	public T remove(int index) {
		return vehicles.remove(index);
	}

	public String getName() {
		return name;
	}


	public void setName(String name) {
		this.name = name;
	}
	public LinkedList<T> asList(){
		return this.vehicles;
	}


	@Override
	public String toString() {
		return "Depot [vehicles=" + vehicles + ", name=" + name + "]";
	}
	
}

Test.java

package v3;

public class Test {

	public Test() {
		// TODO Auto-generated constructor stub
	}
	public static void main(String[] args) {
		BusDepot set = new BusDepot("Anna");
		set.add(new Bus(1, 50, 10));
		set.add(new Bus(2, 10, 15));
		set.add(new Bus(3, 30, 20));
		System.out.print(set);
		
		TramwayDepot set2 = new TramwayDepot("Anna");
		set2.add(new Tramway(1, 50, 10));
		set2.add(new Tramway(2, 10, 15));
		set2.add(new Tramway(3, 30, 20));
		System.out.print(set2);
		
	}

}

Tramway.java

package v3;

public class Tramway extends Vehicle {
	private int trolleyCount;
	
	public Tramway(int id, int maxSpeed, int trolleyCount) {
		super(id, maxSpeed);
		this.trolleyCount = trolleyCount;
	}

	public int getTrolleyCount() {
		return trolleyCount;
	}

	public void setTrolleyCount(int trolleyCount) {
		this.trolleyCount = trolleyCount;
	}

	@Override
	public String toString() {
		return "Tramway [trolleyCount=" + trolleyCount + ", getMaxSpeed()="
				+ getMaxSpeed() + ", getId()=" + getId() + "]";
	}

}

TramwayDepot.java

package v3;

public class TramwayDepot extends Depot<Tramway>{
	

	public TramwayDepot(String name) {
		super(name);
	}

	public int totalTrolleyCount(){
		int sum=0;
		for(int i=0; i<this.size(); i++){
			sum+=this.get(i).getTrolleyCount();
		}
		return sum;
	}

	@Override
	public String toString() {
		return "TramwayDepot [totalTrolleyCount()=" + totalTrolleyCount()
				+ ", getName()=" + getName() + ", asList()=" + asList() + "]";
	}


}

Vehicle.java

package v3;

public class Vehicle {
	private int Id;
	private int maxSpeed;
	
	public Vehicle(int id, int maxSpeed) {
		Id = id;
		this.maxSpeed = maxSpeed;
	}
	public int getMaxSpeed() {
		return maxSpeed;
	}
	public void setMaxSpeed(int maxSpeed) {
		this.maxSpeed = maxSpeed;
	}
	public int getId() {
		return Id;
	}
	public void setId(int id) {
		Id = id;
	}
	@Override
	public String toString() {
		return "Vehicle [Id=" + Id + ", maxSpeed=" + maxSpeed + "]";
	}

}