Java???????????
???????????? ???????[ 2014/3/25 11:05:56 ] ????????Java jdk ???
??????????????
????jdk1.5?汾????????????????????????????????????????
?????????
????1????????????????ClassCastException????????????
????2?????????????????鷳??
????????????
????????????????????????????????????÷????<>??????????????????????????????????<>?????????????????????????????????Χ??
??????????У???????????<>???????????????????????????????????
??????????????????????????????????????????????????????
??????????????????????????class????????????????????????????????
???????????????δ??????
????????????????
import java.util.*;
publicclass GenericDefineDemo4
{
publicstaticvoid main(String[] args)
{
ArrayList<String> arr=new ArrayList<String>();
arr.add("java01");
arr.add("java02");
arr.add("java03");
arr.add("java04");
Iterator<String> it=arr.iterator();
while(it.hasNext())
{
System.out.println(it.next());
}
}
}
??????
???·???
??????????????????
2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
2022/6/14 16:14:27??????????????????????????
2021/10/18 15:37:44???????????????
2021/9/17 15:19:29???·???????·
2021/9/14 15:42:25?????????????
2021/5/28 17:25:47??????APP??????????
2021/5/8 17:01:11