设计模式之工厂设计模式简单实践
1.工厂类
package com.git.base.designpatterns.factory;
/**
*
* <p>Title: PetFactory.java</p>
* <p>Description:工厂类设计模式 生产各种宠物实例</p>
* <p>Copyright: Copyright (c) 2016</p>
* <p>Company: Sage</p>
* @author 五虎将
* @date 2016年5月3日下午10:19:44
* @version 1.0
*/
public class PetFactory {
public static Pet getIntance(String className){
Pet pet = null;
if("dog".equals(className)){
pet = new Dog();
}else if("cat".equals(className)){
pet = new Cat();
}else{
pet = new DefaultPet();
}
return pet;
}
}
2.生产的产品类接口
package com.git.base.designpatterns.factory;
/**
*
* <p>Title: Pet.java</p>
* <p>Description:宠物类</p>
* <p>Copyright: Copyright (c) 2016</p>
* <p>Company: Sage</p>
* @author 五虎将
* @date 2016年5月3日下午10:20:56
* @version 1.0
*/
public interface Pet {
public String sayName();
}
3.具体的工厂要生产的产品类
package com.git.base.designpatterns.factory;
/**
*
* <p>Title: Dog.java</p>
* <p>Description:宠物狗类</p>
* <p>Copyright: Copyright (c) 2016</p>
* <p>Company: Sage</p>
* @author 五虎将
* @date 2016年5月3日下午10:22:48
* @version 1.0
*/
public class Dog implements Pet {
@Override
public String sayName() {
return "my name is longlong ,what's your name?";
}
}
package com.git.base.designpatterns.factory;
public class Cat implements Pet {
@Override
public String sayName() {
return "hi,my name is longmao.";
}
}
package com.git.base.designpatterns.factory;
/**
*
* <p>Title: DefaultPet.java</p>
* <p>Description:默认的宠物类</p>
* <p>Copyright: Copyright (c) 2016</p>
* <p>Company: Sage</p>
* @author 五虎将
* @date 2016年5月3日下午10:28:10
* @version 1.0
*/
public class DefaultPet implements Pet {
@Override
public String sayName() {
return "You want me to call what name? ";
}
}
4.运行测试类
package com.git.base.designpatterns.factory;
/**
*
* <p>Title: PetTest.java</p>
* <p>Description:宠物测试类</p>
* <p>Copyright: Copyright (c) 2016</p>
* <p>Company: Sage</p>
* @author 五虎将
* @date 2016年5月3日下午10:30:54
* @version 1.0
*/
public class PetTest {
public static void main(String[] args) {
Pet pet1 = PetFactory.getIntance("");
System.out.println(pet1.sayName());
Pet pet2 = PetFactory.getIntance("dog");
System.out.println(pet2.sayName());
Pet pet3 = PetFactory.getIntance("cat");
System.out.println(pet3.sayName());
}
}