简单工厂模式

package create.simpleFactory;
/**
 *  简单工厂模式
 * @author zhangchy
 *
 */

abstract class Car{
 public abstract void drive();
}

class BMW extends Car{
 public  void drive(){
  System.out.println("create BMW");
 }
}

class Benz extends Car{
 public  void drive(){
  System.out.println("create Benz");
 }
}
 //工厂制造所有的车
class CarFactory{
 public Car getCar(String type){
  if(type.equals("BMW")){
   return new BMW();
  }
  else if(type.equals("Benz")){
   return new Benz();
  }
  else{
   return null;
  }
 }
}

public class Factory {
 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  
  CarFactory carFactory = new CarFactory();
  
  Car car = carFactory.getCar("BMW");
  car.drive();
  
  car = carFactory.getCar("Benz");
  car.drive();
 }

}