【java設計模式】中介者模式__java設計模式

步驟一：建立 中介者 Mediator

public interface Mediator {//建立中介者    public void createMediator();        public void workAll();}

步驟二：建立具體中介者 實現者

public class MyMediator implements Mediator { private User user1; private User user2;  public User getUser1() {return user1;} public User getUser2() {return user2;} @Overridepublic void createMediator() {user1=new User1(this);user2=new User2(this);}@Overridepublic void workAll() {     user1.work();     user2.work();}}

步驟三：建立同事類介面 User

public abstract class User {   private Mediator mediator;      public Mediator getMediator() {return mediator;}   public User( Mediator mediator) {   this.mediator=mediator;   }   public abstract void work();}

步驟四：建立同事類的具體實作類別

public class User1 extends User {public User1(Mediator mediator) {super(mediator);} public void work() {      System.out.println("user1 執行工作");}}

public class User2 extends User {public User2(Mediator mediator) {super(mediator);} public void work() {      System.out.println("user2執行工作");}}

步驟五：測試

public class Test {   public static void main(String[] args) {Mediator mediator=new MyMediator();mediator.createMediator();mediator.workAll();}}