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Java

Java???

Java?? ??? ???? ??? ?????

"java"?? ???? ??? ???? ??? ??? ????. 1. "read()" ???? ???? ?????. ??? ? ??? ?? ??? ??? ? ???, ??? ?? ??? "char"?? ???. " ??; 2. , "BufferedReader" ???? ???? ?????. 3. "Scanner" ???? ???? ?????.

Nov 23, 2019 am 11:48 AM

java ?? ?? ????

Java?? ?? ??? ??? ???? ??

Java?? ?? ??? ??? ???? ??: ?? ?? ??? ???? ???? ?????. ??? 2? 28?, ??? 2? 29?, ??? ??? ??? ????. ?? ?? ?? ?, ?? ?? ?? ?? ??? ?? ?? ??? ??? ? ?? ??? ???.

Nov 23, 2019 am 11:30 AM

java

Java? ???? ?? ????.

"java"? ???? ?? ???? ??? "TOMCAT"? ????? "ISO8859-1" ???? ???? ?????. ???? ?? "ISO8859-1"? ???? "TOMCAT"?? ?? ???? ??? ??? ??? ?? "GBK"? ???? ????? ????.

Nov 23, 2019 am 11:25 AM

java ??? ?? ?

Java?? ??? ???? ???? ??

"java"?? ??? ???? ???? ??? ??? ????. "Character" ???? ?? ??? "isDigit()"? ???? ???? ??? ?????? ???? ? ?????. in? ?????. ???? ??? ???? "true"? ????, ??? ??? "false"? ?????.

Nov 23, 2019 am 11:15 AM

java ?? ?? ??

Java?? ???? ?? ???? ???? ??

???? Java? ?? ???? ???? ??: ?? ??? ?? ??? ????? ???? ??? ?? match() ???? ???? ???? ??? ?? ??? ???? ????? ??? ? ????. ?? ??? ?? true? ?????.

Nov 23, 2019 am 11:02 AM

java

Java?? ??? ?????? ???? ?? ???

Java ?????? ?? ??? ?? ?? ??: 1. ??????? ??? ? "CHARACTER SET'utf8'" ?? ???? ??? ??? ?????. 2. ??? ?? ? ??? ??? ????? "CHARSET=utf8" ?? ?????. 3. URL ?? ? ??? ??? ?????.

Nov 23, 2019 am 10:45 AM

java

Java?? ??? ??? ???? ??? ???? ??

Java?? ??? ??? ???? ??? ???? ??: 1. ??? ???? ??? ?? ??? ?? ???? ???? ?????. ???? ??? ? ???? true? ????, ??? ??? false? ?????. 2. ??? ???? ??? ??? ??? ??? ??? ??? ???? ??? ??? ???? ??? ?????.

Nov 23, 2019 am 10:33 AM

java

Java?? ??? ?? ??? ???? ??

Java?? ???? ?? ??? ??? ???? ??: ??? min? ??? max? ????, random() ???? ???? min? max? ???? ???? ?? ??? ??? ????, min?? max??? ?? ??? ?????. ??? ?? ?? ??? ?? ??? ???? ?? ?????.

Nov 23, 2019 am 10:20 AM

java

Java?? ?????? ???? ? ??? ? ??? ??????

Java? ?????? ???? ? ?? ?????? ??, ? ????? ??? ??? ?? ??, ?? ?? ?????? ? ?? ??? ??? ? ??? ?????? ??? ? ???? ???? ???? ???. ?? ??? ?? ????? ????? ???? "HTTPS" ????? ???? "FTP" ????? ???? ?????.

Nov 23, 2019 am 10:15 AM

java ????? ????? ??

Java ? ??? ?? ???

Java? ??? ? ???? ?? ?? ??: 1. jsp ???? ??? ?? ??? UTF-8? ???? ??? ? ???? ?????. 2. ?? ? ??????? post ? get ????? ?? ??? ? ?? ??? ???? ?? ??? ??? ??? ? ????.

Nov 23, 2019 am 10:00 AM

java

Java? ??? ??? ?? ???? ?????.

Java?? ??? ??? ??? ???? ??: 1. Calendar ???? ???? ??? ??? ??? ?????. ? ???? ?? ?? ???? ?????. 2. SimpleDateFormat ???? ???? ?? ??? ???? ??? ????. ???? "EEEE"? ??? ?????.

Nov 23, 2019 am 09:43 AM

java

Java? ??? ????? ?????.

??? ????? ???? Java ???: ??? ??? ??? ???? ?? ????? ??? ???? ?? instanceof ???? ???? ??? ????? ??? ??? ? ????. ????? false? ?? ??? ???? ????.

Nov 23, 2019 am 09:35 AM

java

???? ??? ???? ??

Java?? ???? ??? ???? ??? ??? ????. 1. Java? ?? ??? ??? ???? ????? "=="? ?? ???? ???? true? ???? ???? ???. ?? ??? false? ?????. 2. ??? ?? ??? ???? ????? ??? ??? ???? equals() ???? ????? ???.

Nov 23, 2019 am 09:17 AM

java

Java?? ???? ????? ??

???? ????? ??? ???? ?? Java?? ???? ???? ??? ? ????. ???? ???? ??? ??? "0x4e00-0x9fa5" ?? ??? "19968-40869"???. Java??? ???? ???? ???? ???? ???? ??? ????? ??? ??? ? ????.

Nov 22, 2019 pm 05:12 PM

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