
Java ??? ?? ??? ??
ORM?? ?????? Hibernate? SessionFactory? ?????? ?????? ??? ?????? ?????(? ???? ??? ??? ??? ? ????)? Session?? ??? ??? ???? ????? ?????. MyBatis?? ?? ???? ???? ?? #? $? ???? ?? ???? ??????
Dec 10, 2019 pm 02:41 PM
Java ????? ?? ??(2)
Spring? ??? ?? ?? Java?? ?? ?? ?? ??????? ?? ?????. ?? ?? ?? ????? Spring? ??????? ?????. Struts? ???? ?? ? ??? Spring? ???? ???? ?? ???? ? ???.
Dec 09, 2019 pm 02:51 PM
Java ????? ?? ?? (1)
Struts? ?? ??? ??? ?? ???? ???. Hibernate? ?? ??? ??? ?? ?????. Spring? ?? ??? ??? ?? ???? ???. Struts? ??? ??? ?? ?????????. iBatis? Hibernate? ???? ?????? Hibernate? 2?? ??? ???????. JDO? ??????
Dec 07, 2019 pm 03:03 PM
javaweb ??? ?? (2)
JDBC? ??????? ????? ?? ??? ?????? prepareStatement? Statement? ???? ?? ???? ?????. JDBC ??????? ????? ??? ????? ???? ??? ?? ???? ?????. ?????? ?? ?? ??, ? ?? ?? ???? ???? JDBC ?? ??(dirty reading)? ??????
Dec 06, 2019 pm 03:02 PM
JavaWeb ??? ?? (1)
Servlet API? ??()? ????()? ???? ?????? request.getAttribute()? request.getParameter()? ???? ??????
Dec 05, 2019 pm 03:08 PM
?? Java ?? ?? (4)
a.hashCode()? ??? ?? ?????? a.equals(b)? ?? ??? ???? ??? ???? ?? ???? ??? Java ???? ???? Java ???? ???? ??? ?????? ??? ??? ?? ?????? ??? ??? ???. JVM ?? ??? ??? ?? ????? ?????.
Dec 04, 2019 pm 03:04 PM
?? Java ?? ?? (3)
String s = new String("xyz"); ??? ?? StringObject? ?????? String ???? ???? ? ???? String? StringBuffer? ???? ?????? final, finally, finalize? ?????.
Dec 03, 2019 pm 03:14 PM
?? ??? ??? ??
ArrayList? Vector? ??? HashMap? Hashtable? ??? List? Map? ???? ?????? List, Set ? Map? Collection ??????? ?????? ??? ???? ? List, Map ? Set ? ?? ?????? ? ??? ??????
Dec 02, 2019 pm 04:27 PM
?? Java ?? ?? (2)
?? ??? ??? ??? ???? ???? ?? ?????? ??? ??? ??? Math.round(11.5)? ?????? Math.round(-11.5)? ?????? ????? ???? ???? ??????
Nov 30, 2019 pm 03:28 PM
?? Java ?? ?? (1)
".java" ?? ??? ?? ???(?? ??? ??)? ??? ? ????? ?? ??? ?????? Java?? goto? ???? &? &&? ???? ?? ???? ?????. JAVA? ?? ?? ?? ???? ???? ??? ?????? switch ?? byte, long ?? String?? ??? ? ????
Nov 30, 2019 pm 01:25 PM
Java ??? ??? ??? ???
HashMap? Hashtable? ???? ?????? ??(Array)? ??(ArrayList)? ???? ?????? ArrayList ?? Array? ?? ???? ???? ArrayList? LinkedList? ???? ??????
Nov 29, 2019 pm 03:49 PM
???? Java ?? ?? ??
????? ??? ?????? ????? ????? ???? ?????? ????? ????? ???? ?????? ??? ??? ???. String, StringBuffer ? StringBuilder? ???
Nov 29, 2019 pm 01:55 PM
Java ?? ?? ? ?? ??? ??
?? ?? ???? ?? ???? ???? ?????? ??: Java?? ??? ?? ??? ?? ??? ?? ??? ??? ?? ?????. ava? ????? ?? Java? ??? ???? ?????? ?? ? ????.
Nov 28, 2019 pm 03:43 PM
Java ?? ?? ??(?? ??)
Java ???? ?????? ?????? ??, ?, ?? ? ??? ?????? ?????? ???, ??? ?? ? ??? ??? ???? ?????? ???
Nov 28, 2019 pm 01:39 PM
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