Adapter Pattern

The Adapter Pattern converts the interface of a class into another interface the clients expect.
Adapter lets classes work together that couldnot otherwise beause of incompatible interfaces.

interface Duck {
    public void quack();
    public void fly();
}

interface Turkey {
    public void gobble();
    public void fly();
}

class MallardDuck implements Duck {
    public void quack() {
        System.out.println("Quack");
    }
    public void fly() {
        System.out.println("fly");
    }
}

class WildTurkey implements Turkey {
    public void gobble() {
        System.out.println("Gobble gobble");
    }

    public void fly() {
        System.out.println("im flying a short distance");
    }
}

class TurkeyAdapter implements Duck {
    Turkey turkey;
    
    public TurkeyAdapter(Turkey turkey) {
        this.turkey = turkey;
    }

    public void quack() {
        turkey.gobble();
    }

    public void fly() {
        for(int i=0;i < 5;i++) {
            turkey.fly();
        }
    }
}


    public static void main(String[] args) {
        MallardDuck duck = new MallardDuck();
        
        WildTurkey turkey = new WildTurkey();
        Duck turkeyAdapter = new TurkeyAdapter(turkey);
        
        System.out.println("the turkey says ");
        turkey.gobble();
        turkey.fly();
        
        System.out.println("the duck says ");
        testDuck(duck);
        
        System.out.println("the turkeyAdatper says ");
        testDuck(turkeyAdapter);
    }
    
    static void testDuck(Duck duck) {
        duck.quack();
        duck.fly();
    }