->工廠方法模式

//抽象產品角色
public interface Moveable {  
  void run();
}
//具體產品角色
public class Plane implements Moveable {  
  @Override
    public void run() {  
      System.out.println("plane....");    
  }
}
public class Broom implements Moveable {  
  @Override   
 public void run() { 
       System.out.println("broom.....");
    }
}
//抽象工廠
public abstract class VehicleFactory {    
abstract Moveable create();
}
//具體工廠
public class PlaneFactory extends VehicleFactory{
    public Moveable create() {
        return new Plane();
    }
}
public class BroomFactory extends VehicleFactory{
    public Moveable create() {
        return new Broom();
    }
}
//測試類public class Test {
    public static void main(String[] args) {
        VehicleFactory factory = new BroomFactory(); 
       Moveable m = factory.create();
        m.run(); 
   }
}

->抽象工廠

//抽象工廠類
public abstract class AbstractFactory {
  public abstract Vehicle createVehicle();
  public abstract Weapon createWeapon();
  public abstract Food createFood();
}
//具體工廠類，其中Food,Vehicle，Weapon是抽象類，
public class DefaultFactory extends AbstractFactory{
  @Override
  public Food createFood() {
      return new Apple();
  }
  @Override
  public Vehicle createVehicle() {
      return new Car();
  }
  @Override
  public Weapon createWeapon() {
      return new AK47();
  }
}
//測試類
public class Test {
  public static void main(String[] args) {
      AbstractFactory f = new DefaultFactory();
      Vehicle v = f.createVehicle();
      v.run();
      Weapon w = f.createWeapon();
      w.shoot();
      Food a = f.createFood();
      a.printName();
  }
}