设计模式（适配器）

//适配器
public class Adapter extends Adaptee implements TargetOperation {

    @Override
    public void Operation() {
        super.oldOperation();
    }
}

//被适配的对象
public class Adaptee {
    public void oldOperation(){
        System.out.print("old Operation");
    }
}

//适配的目标
public interface TargetOperation {
    public void Operation();
}

public class App {

    public static void main(String[] args) {    
        Adapter adapter = new Adapter();
        adapter.Operation();
    }
}