java适配器模式，Adapter模式代码实例

适配器模式：就是原先的接口不适用，需要一个适配器换到另一个接口

如图所示:

核心代码就是:FishingBoat重写了原接口RowingBoat的row()方法

例子:

public class App {
    public static void main(String[] args) {
        Captain captain=new Captain(new FishingBoatAdapter());
        captain.row();
    }
}

public class Captain implements RowingBoat {
    private RowingBoat rowingBoat;
    public Captain(RowingBoat rowingBoat){
        this.rowingBoat=rowingBoat;
    }
    @Override
    public void row() {
        rowingBoat.row();
    }
}

public class FishingBoat {
    public void sail(){
        System.out.println("The boat is sailing");
    }
}

public class FishingBoatAdapter implements RowingBoat{
    private FishingBoat boat;
    public FishingBoatAdapter(){
        boat=new FishingBoat();
    }

    @Override
    public void row() {
        boat.sail();
    }
}

public interface RowingBoat {
    void row();
}