Decorator pattern written in Java

Car.java

package br.com.car.decorator;

interface Car 
{ 
	int getHp();
	float getPrice();
}

Collector.java

package br.com.car.decorator;

public class Collector extends MotorDecorator 
{
	Collector(Car c) 
	{
		super(c);
	}
	
	@Override
	public int getHp()
	{
		return c.getHp() + 20;
	}
	
	@Override 
	public float getPrice()
	{
		return c.getPrice() + 100;
	}
}

Decorator.java

package br.com.car.decorator;

abstract public class Decorator implements Car
{
	Car c;
	
	Decorator(Car c)
	{
		this.c=c;
	}
}

Factory.java

package br.com.car.decorator;

public class Factory 
{
	public static void main(String[] s)
	{
		// Customizing at instantiation
		
		Car c    = new SeatMassager(new Collector(new Turbo(new Turbo(new Turbo(new Prius())))));

		Car cc   = new SeatMassager(new LeaderSeat(new Turbo(new Turbo(new Turbo(new Prius())))));

		Car ccc  = new Turbo(new Prius());

		Car cccc = new LeaderSeat(new Prius());

	}
}

InteriorDecorator.java

package br.com.car.decorator;

public class InteriorDecorator extends Decorator  
{
	InteriorDecorator(Car c) 
	{
		super(c);
	}

	@Override
	public int getHp() 
	{
		return c.getHp();
	}

	@Override
	public float getPrice() 
	{
		return c.getPrice();
	}
}

LeaderSeat.java

package br.com.car.decorator;

public class LeaderSeat extends InteriorDecorator
{
	LeaderSeat(Car c) 
	{
		super(c);
	}
	
	@Override 
	public float getPrice()
	{
		return c.getPrice() + 2000;
	}
}

MotorDecorator.java

package br.com.car.decorator;

public class MotorDecorator extends Decorator
{
	MotorDecorator(Car c)
	{
		super(c);
	}
	
	@Override
	public int getHp() 
	{
		return c.getHp();
	}
	
	@Override 
	public float getPrice()
	{
		return c.getPrice();
	}
}

Prius.java

package br.com.car.decorator;

public class Prius implements Car 
{
	int hp = 104;
	float price = 10000;
	
	@Override
	public int getHp() 
	{
		return hp;
	}
	
	@Override
	public float getPrice()
	{
		return price;
	}
}

SeatMassager.java

package br.com.car.decorator;

public class SeatMassager extends InteriorDecorator
{
	SeatMassager(Car c)
	{
		super(c);
	}
	
	@Override
	public float getPrice()
	{
		return c.getPrice() + 5000;
	}
}

Turbo.java

package br.com.car.decorator;

public class Turbo extends MotorDecorator
{
	Turbo(Car c) 
	{
		super(c);
	}
	
	@Override 
	public int getHp()
	{
		return c.getHp() + 50;
	}
	
	@Override 
	public float getPrice()
	{
		return c.getPrice() + 500;
	}
}