工厂模式属于创建型模式,如果需要大量的创建实现同一个接口或者类的对象时，可以使用。
简单看下图例:
- /**
- * Created by Administrator on 2016/11/18.
- */
- public interface Worker {
- public void work();
- }
- /**
- * Created by Administrator on 2016/11/18.
- */
- public class Doctor implements Worker {
- @Override
- public void work() {
- System.out.println("医生开始上班了");
- }
- }
- /**
- * Created by Administrator on 2016/11/18.
- */
- public class Student implements Worker {
- @Override
- public void work() {
- System.out.println("学生开始上课了");
- }
- }
- /**
- * Created by Administrator on 2016/11/18.
- */
- public class Teacher implements Worker {
- @Override
- public void work() {
- System.out.println("教师开始教学了");
- }
- }
- public class Headmaster extends Teacher{
- public void work(){
- System.out.print("校长开始上班了");
- }
- }
- /**
- * Created by Administrator on 2016/11/18.
- */
- public class WorkFactory {
- public void work(Worker worker){
- worker.work();
- }
- /*
- *多个工厂方法,创建不同的工厂类,外部调用
- */
- public Worker StudentWork(){
- return new Student();
- }
- public Worker TeacherWork(){
- return new Teacher();
- }
- public Worker DoctorWork(){
- return new Doctor();
- }
- public Worker HeadmasterWork(){
- return new Headmaster();
- }
- /*
- *创建静态工厂类,外部调用
- */
- public static Worker StudentWork1(){
- return new Student();
- }
- public static Worker TeacherWork1(){
- return new Teacher();
- }
- public static Worker DoctorWork1(){
- return new Doctor();
- }
- public static Worker HeadmasterWork1(){
- return new Headmaster();
- }
- }
- /**
- * Created by Administrator on 2016/11/18.
- */
- public class Test {
- public static void main(String[] args){
- WorkFactory factory = new WorkFactory();
- factory.work(new Doctor());
- factory.work(new Teacher());
- factory.work(new Student());
- factory.work(new Headmaster());
- factory.DoctorWork().work();
- factory.TeacherWork().work();
- factory.StudentWork().work();
- factory.HeadmasterWork().work();
- WorkFactory.DoctorWork1().work();
- WorkFactory.TeacherWork1().work();
- WorkFactory.StudentWork1().work();
- WorkFactory.HeadmasterWork1().work();
- }
- }
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/29876893/viewspace-2140451/ ，如需转载，请注明出处，否则将追究法律责任。
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设计模式之单例模式(Singleton)
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