java의 generics Erasure 한계를 보여주는 코드

GenericsErasure.java

package com.tistory.seungdols;

import java.util.ArrayList;
import java.util.List;

/**
 * @PROJECT bytecodeTest
 * @PACKAGE com.tistory.seungdols
 * @WRITTER Administrator
 * @DATE 2015-11-05
 * @HISTORY
 * @DISCRIPT
 */
public class GenericsErasure {

    public static void main (String[] args) {

        List<Apple> appleList = new ArrayList<> ();
        List<Orange> orangeList = new ArrayList<> ();

        Apple apple = new Apple ();
        add (apple);

        add (orangeList);
    }
    public static <E>void add (E fruit)
    {
        if(fruit instanceof Apple)
        {
            System.out.println ("Apple");
        }
        else if(fruit instanceof List<?>)
        {
            System.out.println ("Apple List");
        }

    }

}

class Apple
{

}
class Orange
{

}