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Head Firstデザインパターン 第2版 ―頭とからだで覚えるデザインパターンの基本
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Head Firstデザインパターン 第2版 ―頭とからだで覚えるデザインパターンの基本

by Eric Freeman, Elisabeth Robson, 佐藤 直生, 木下 哲也
June 2022
Beginner to intermediate
672 pages
17h 23m
Japanese
O'Reilly Japan, Inc.
Content preview from Head Firstデザインパターン 第2版 ―頭とからだで覚えるデザインパターンの基本
you are here
 
515
12
章 
Compound
パターン
public class DuckSimulator {
public static void main(String[] args) {
DuckSimulator simulator = new DuckSimulator();
AbstractDuckFactory duckFactory = new CountingDuckFactory();
simulator.simulate(duckFactory);
}
void simulate(AbstractDuckFactory duckFactory) {
//
ここでカモファクトリとカモを作成
//
ここで群れを作成
System.out.println("\n
カモシミュレータ:オブザーバ付き
");
Quackologist quackologist = new Quackologist();
flockOfDucks.registerObserver(quackologist);
simulate(flockOfDucks);
System.out.println("\n
カモが鳴いた回数:
" +
QuackCounter.getQuacks() +
"
回
");
}
void simulate(Quackable duck) {
duck.quack();
}
}
18
監視の準備ができました。シミュレータを更新して実行して
みましょう。
ここでは
Quackologist ...
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Publisher Resources

ISBN: 9784873119762Other