8??????Java
???????????? ???????[ 2015/2/26 15:19:37 ] ????????Java ??????? ????
???????????????????????Program Creek ?????Java????????????ж??????????????в????????????????????????????????????
????1?????????????
??????????????????????????????
????String s = "abcd";
????s = s.concat("ef");
????2??equals()??????hashCode()??????????
????HashCode?????????????????equals()??????hashCode()???????????????
??????????????????(equal)????????????????????????
??????????????????????????????δ?????(equal)??
????3??Java??????ν?
??????к???????????????????????????????????????????????????
????4??????????ν?
???????Collections??Collection????????Collections?????и????й????????????????????
??????
???·???
??????????????????
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