package generic;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Collections;

import java.util.Iterator;

/**

* Created by Edwin Xu on 4/28/2020 1:33 PM

*/

class MyGeneric<T>{

private T id;

public MyGeneric(T id){

this.id = id;

}

public void print(){

System.out.println(id.toString());

}

}

public class Generic {

public static void main(String[] args) {

ArrayList<Integer> a = new ArrayList<>();

a.add(1);

//Generic Methods:

int i = Collections.binarySearch(a,1);

//返回的是index

System.out.println(i);

System.out.println(a.get(i));

//Generic Interface

Iterator<Integer> iterator = a.iterator();

while (iterator.hasNext()){

System.out.println(iterator.next());

}

MyGeneric<String> myGeneric = new MyGeneric<>("EdwinXu");

myGeneric.print();

}

}