Java设计模式之工厂模式实现方法详解

//抽象产品角色
public interface Moveable {
  void run();
}
//具体产品角色
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.....");
  }
}
//抽象工厂
public abstract class VehicleFactory {
  abstract Moveable create();
}
//具体工厂
public class PlaneFactory extends VehicleFactory{
  public Moveable create() {
    return new Plane();
  }
}
public class BroomFactory extends VehicleFactory{
  public Moveable create() {
    return new Broom();
  }
}
//测试类
public class Test {
  public static void main(String[] args) {
    VehicleFactory factory = new BroomFactory();
    Moveable m = factory.create();
    m.run();
  }
}

//抽象工厂类
public abstract class AbstractFactory {
  public abstract Vehicle createVehicle();
  public abstract Weapon createWeapon();
  public abstract Food createFood();
}
//具体工厂类，其中Food,Vehicle，Weapon是抽象类，
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();
  }
}
//测试类
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();
  }
}