JAVA

this is my code Duck.java

public abstract class Duck {

protected FlyBehavior flyBehavior;

protected QuackBehavior quackBehavior;

public Duck() {}

public abstract void display();

public abstract void performFly();

public abstract void performQuack();

public void swim() {

System.out.println("All ducks float, even decoys!");

}

public QuackBehavior getQuackBehavior() {

return quackBehavior;

}

public void setQuackBehavior(QuackBehavior quackBehavior) {

this.quackBehavior = quackBehavior;

}

public FlyBehavior getFlyBehavior() {

return flyBehavior;

}

public void setFlyBehavior(FlyBehavior flyBehavior) {

this.flyBehavior = flyBehavior;

}

}

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Add a new kind of quacking behavior called ShoutingQuack (implement it by having the duck say "QUACK QUACK!"

Create a new Duck subclass called LoudmouthDuck. When it quacks, it does a shouting quack.

At run time (in the test program), make the MallardDuck shout quack.