现在，要实现一只鸭子和一只火鸡沟通。

public class DuckTestDrive {   public static void main(String[] args) {        //首先，获得一个野鸭。      MallardDuck duck = new MallardDuck();        //然后获得一直火鸡      WildTurkey turkey = new WildTurkey();        //新建一个火鸡和鸭子的适配器      Duck turkeyAdapter = new TurkeyAdapter(turkey);      System.out.println("The Turkey says...");      turkey.gobble();      turkey.fly();      System.out.println("\nThe Duck says...");      testDuck(duck);      System.out.println("\nThe TurkeyAdapter says...");        //由此火鸡说的话鸭子就听得懂了，然后鸭子的话目前火鸡还不懂，需要重新写个鸭子的适配器。      testDuck(turkeyAdapter);   }   static void testDuck(Duck duck) {      duck.quack();      duck.fly();   }}

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

public class DuckAdapter implements Turkey {   Duck duck;   Random rand;    public DuckAdapter(Duck duck) {      this.duck = duck;      rand = new Random();   }    //适配器做的事情就是兼容两种不同的叫声，当火鸡咕咕叫的时候适配器把它转化成呱呱叫。   public void gobble() {      duck.quack();   }     public void fly() {      if (rand.nextInt(5)  == 0) {           duck.fly();      }   }}

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

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

public 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 class WildTurkey implements Turkey {   public void gobble() {      System.out.println("Gobble gobble");   }    public void fly() {      System.out.println("I'm flying a short distance");   }}