java设计模式，工厂模式（简单工厂、工厂、抽象工厂）示例源码

package simple; public class CarSimpleFactory { public static final String UPTYPE = "uptype"; public static final String MIDTYPE = "midtype"; public static final String DNTYPE = "dntype"; public static ICar create(String type) { ICar car = null; switch (type) { case UPTYPE: car = new UpCar(); break; case MIDTYPE: car = new MidCar(); break; case DNTYPE: car = new DnCar(); break; } return car; } }