Big talk Design Pattern _ intermediary Pattern

Us and Iraq calls will be passed through the United Nations Security Council.

Package COM. WZS. design;/*** big talk design mode -- page262 intermediary mode ** @ author administrator **/public class mediatorpattern {public static void main (string [] ARGs) {unitednationssecuritycouncer UNSC = new unitednationssecuritycouncer (); USA C1 = new USA (UNSC); Iraq C2 = new Iraq (UNSC); UNSC. setcolleague1 (C1); UNSC. setcolleague2 (C2); c1.declare ("developers and weapons are not allowed; otherwise, a war is required! "); C2.declare (" We have no nuclear weapons and are not afraid of aggression. ") ;}// Country class abstract class country {protected UnitedNations mediator; Public Country (UnitedNations mediator) {This. mediator = mediator; }}// U.S. class USA extends country {public USA (UnitedNations mediator) {super (mediator);} public void declare (string message) {mediator. declare (message, this);} public void getmessage (string message) {system. out. println ("US gets peer information:" + message) ;}// Iraqi class Iraq extends country {public Iraq (UnitedNations mediator) {super (mediator );} public void declare (string message) {mediator. declare (message, this);} public void getmessage (string message) {system. out. println ("Iraq obtains peer information:" + message) ;}// United Nations machine structure Abstract class UnitedNations {public abstract void declare (string message, country colleague );} // United Nations Security Council class unitednationssecuritycouncel extends UnitedNations {private USA colleague1; private Iraq colleague2; // US public void setcolleague1 (USA colleague1) {This. colleague1 = colleague1;} // Iraqi public void setcolleague2 (Iraq colleague2) {This. colleague2 = colleague2;} @ overridepublic void declare (string message, country colleague) {If (colleague = colleague1) {colleague1.getmessage (Message );} else {colleague2.getmessage (Message );}}}