/**
 * 行为模式。
 * @author Bright Lee
 */
public class BehaviorPattern {
	
	public static void main(String[] args) {
		Animal animal = null;
		
		animal = new Dog();
		animal.setCallBehavior(new WangWangCallBehavior());
		animal.call();
		
		animal = new Cat();
		animal.setCallBehavior(new MiaoMiaoCallBehavior());
		animal.call();
	}

}

class Animal {
	
	protected CallBehavior callBehavior;
	
	public void call() {
		callBehavior.call();
	}
	
	public void setCallBehavior(CallBehavior callBehavior) {
		this.callBehavior = callBehavior;
	}
	
}

class Dog extends Animal {
	
	public Dog() {
	}
	
}

class Cat extends Animal {
	
	public Cat() {
	}
	
}

interface CallBehavior {
	
	void call();
	
}

class WangWangCallBehavior implements CallBehavior {

	public void call() {
		System.out.println("汪汪！！");
	}
	
}

class MiaoMiaoCallBehavior implements CallBehavior {

	public void call() {
		System.out.println("喵喵！！");
	}
	
}

输出结果：

汪汪！！
喵喵！！