redheadduck.java

来自「深入浅出设计模式」· Java 代码 · 共 12 行

package headfirst.combining.composite;

public class RedheadDuck implements Quackable {
	public void quack() {
		System.out.println("Quack");
	}

	public String toString() {
		return "Redhead Duck";
	}
}