public class Demo { public static void main(String[] args) { Mediator m = new Mediator(); Department d1 = new Department(m, "開(kāi)發(fā)部"); Department d2 = new Department(m, "財(cái)務(wù)部"); Department d3 = new Department(m, "策劃部"); m.add(d1, "dep"); m.add(d2, "fin"); m.add(d3, "c"); d2.apply("手里有一個(gè)項(xiàng)目需要開(kāi)發(fā)", "dep"); d1.apply("開(kāi)發(fā)項(xiàng)目需要資金", "fin"); d1.apply("項(xiàng)目開(kāi)發(fā)完了，需要策劃發(fā)布", "c"); d3.apply("發(fā)布會(huì)需要資金", "fin"); }}class Department{  private String name; private Mediator mediator;  public Department(Mediator mediator,String name) { this.name = name; this.mediator = mediator; }  public String getName() { return name; } public void setName(String name) { this.name = name; }  public void apply(String thing,String coordinate){ System.out.println("我們是"+this.getName()+","+thing+",需要幫助"); mediator.dispatch(this, thing, coordinate); }  public void handle(String name,String thing){ System.out.println("我們是"+this.getName()+","+name+"需要我們的幫助，我們馬上處理他們的事情"); System.out.println("*******************************************"); }}/** *中介者對(duì)象，持有所有同事對(duì)象，負(fù)責(zé)調(diào)度各部門(mén)協(xié)調(diào)工作  */class Mediator{ private String name;  private Map<String, Department> map = new HashMap<String, Department>();  public void add(Department d,String name){ this.map.put(name, d); }  public void dispatch(Department dpt,String thing,String coordinate){ Department d = map.get(coordinate); d.handle(dpt.getName(),thing); }}