?? gooseadapter.java
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package headfirst.combining.composite;public class GooseAdapter implements Quackable { Goose goose; public GooseAdapter(Goose goose) { this.goose = goose; } public void quack() { goose.honk(); } public String toString() { return "Goose pretending to be a Duck"; }}?? 快捷鍵說明
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