- package com.yikuan.cn;
- import java.util.ArrayList;
- import java.util.Collection;
- import java.util.Date;
- public class Test2 {public static void main(String[] args) {
- Collection<Object> coll = new ArrayList<>();
- coll.add(123);
- coll.add(new String("abcdef"));
- coll.add(new Date());
- coll.add("BBBBB");
- for (Object obj : coll) {
- System.out.println(obj);
- }
- }
- }
来源: http://www.bubuko.com/infodetail-2732014.html