复合举例──SampleComposition

package org.kingda.book.basicoop.composition{import flash.display.Sprite;public class SampleComposition extends Sprite{public function SampleComposition() {var foo:Human = new Human("Kingda");//创建一个人，名叫Kingdavar book:Book = new Book();//创建一本书var song:Song = new Song();//创建一首歌foo.read(book);//Kingda读书foo.tell();//Kingda说说现在记得什么//输出：Mouse speak:Kingda:The content of a Bookfoo.enjoy(song);//Kingda听歌foo.tell();//Kingda说说现在记得什么//输出：Mouse speak:Kingda:The lyric of a Video}}}class Human {private var _name:String;private var _mouth:Mouth= new Mouth();private var _eye:Eye= new Eye();private var _ear:Ear= new Ear();private var _brain:Brain= new Brain();public function Human(name:String) {_name = name;}public function read(aBook:Book):void {_eye.read(aBook);_brain.remember(_eye.info);}public function getPhone()public function enjoy(aSong:Song):void {_ear.hear(aSong);_brain.remember(_ear.info);}public function tell():void {_mouth.speak(_name + ":" +_brain.memory);}}class Mouth {function speak(msg:String):void {trace ("Mouse speak:"+ msg);}}class Eye {var info:String;function read(aBook:Book):void {info = aBook.content;}}class Ear {var info:String;function hear(aSong:Song):void {info = aSong.content;}}class Brain {var memory:String;function remember(msg:String) {memory = msg;}}class Book {public var content:String = "The content of a Book";}class Song {public var content:String = "The lyric of a Video";}