Java? ?? ??? ??? ????? ?? ? ???? ???? ???? ???? ???? ????. 1. ???? ?? ?? ??? ?? ???? ???? InputStreamReader ? OutputStreamWriter? ???? ??? ?? ???? ???? ??? ?? ? ?? ??? ??????. 2. ???? ???? ???? ?? ? ? ?? ?? ??????? ??? ??? ?? ??? ???? ?????? ???? ?? ??? ??????. 3. String.getBytes () ? ? ??? (byte [])????? ???? ??? ??? ?? ??? ??? ??? ?? ?? STANDERCHARSETS.UTF_8? ???? ??????. ???, ? ???? ???? ????? ??????, ?? ??? ????? ?? ? ? ????.
Java? ??? ??? ??? ?? ?, ??? ?? ???? ???? ???? ?? ?? ????. Java? ?? ??? ?? ???? ???? ?? ??? ???? ??? ??? ?? ??, ?? ??? ??? ????? ?? ???? ???? ?? ? ? ?? ? ????.
1. ???? ??/?? ??? ?? ???? ??????
??? ??? ?? ???? ?? ? ??? ???? ?? ???? ???? ????? ?????. ??? ????. ?? ?? ??? ?? ???? ????? (? : Windows? ?? CP1252, Linux? ????? UTF-8? ?????). ?? ???? ??? ? ????.
??? ??? ??????.
- ?? ? ???
InputStreamReader?OutputStreamWriter??????. - ???? ?? ???? ????
FileReader??FileWriter? ?? ???? ?????.
?? ??:
inputStreamReader reader = new inputStreamReader (new FileInputStream ( "file.txt"), StandardCharsets.utf_8); outputStreamWriter Writer = New OutputStreamWriter (? FileOutputStream ( "output.txt"), StandardCharsets.utf_8);
?? ?? ??? ???? ???? UTF-8? ???? ???? ???? ???. ?? ?? ???? ?? ???? ??? ??? ????.
2. ???? ???? ???? ???? ??????
HTTP ?? ?? ???? ????? ?? ???? ?????? ?? ?? ?? ?? ???? ???? ?? ??????. ???? ??? ?????.
- ? ??? Charset??? ??? ??? ?? ?? ?? (
Content-Type: text/html; charset=UTF-8) - Apache httpclient ?? okhttp? ?? ????? ???? ???? ?? ??? ??? ? ????.
- ???? "??"?? "??"??? ??? ??? ???? ???? ???? ???? ????.
??? ???? ??? ??? ??? ?? ?? (BOM)? ????? UTF-8? ?? ??? ????? ?????? ??? ????? ???? ?? ?? ??? ????.
3. String.getBytes () ? ? String (byte [])? ???????.
? ??? ??? ?????. ??? ??? ???? ?? ???? ??? ???? ?????. ??? ??? ????? :
??? [] ??? = "???".getBytes (); ??? s = ? ??? (???);
?? ???? ?? ????? ??? ?? ??? ???? ???? ?? ? ????.
?? ?? ???? ?????.
??? [] ??? = "???".getBytes (Standardcharsets.utf_8); ??? s = ? ??? (bytes, Standardcharsets.utf_8);
?? ?? ?? ??? ???? ???? ???/?????? ?? ??? ??? ? ???? ??????.
????? Java?? ??? ???? ???? ?? ?? ???? ???? ?????. ?? ??? ??? ??? ??? ???? ???? ??? ???, garbled (breadbled ???) ???? ????? ???? ?????.
? ??? Java? ??? ??? ??? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
? AI ??
Undress AI Tool
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Clothoff.io
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vscode settings.json ??
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settings.json ??? ??? ?? ?? ?? ?? ?? ??? ??? VSCODE ??? ??? ???? ? ?????. 1. ??? ?? ?? : Windows? C : \ Users \\ AppData \ Roaming \ Code \ User \ Settings.json, MacOS IS /users//library/applicationsupport/code/user/settings.json, linux? /home//.config/code/user/settings.json; 2. Workspace ?? ?? : .vscode/settings project root ????
JDBC? Java? ??? ???? ??? ??????
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JDBC ????? ???? ????? ?? ?? ?? ??? ?? ?? ??? ?? ? ?? ??? ?? ?? ?? ??? ???????. 1. ????? ????? Conn.SetAutoCommit (False)?? ??????. 2. ??? ? ????? ?? ?? SQL ??? ?????. 3. ?? ??? ??? ?? Conn.commit ()?? ???? ??? ???? ???? ?? ??? ???? Conn.Rollback ()?? ??????. ???, ? ??? ???? ????, ??? ???? ????, ?? ??? ??? ?? ??? ??? ???? ? ???????. ?? ?? ?? ???? ????? ??? ???? ?? ?? ???? ???? ??? ????? ?? ??? ??? ? ?? ???? ?? ????.
???? ??? ?? Java? ??? ?? ??? ?
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??? (DI) ISADESIGNPATTORNWHEREWHEDROUDIVESTESTESTETESTERGROWCONSTRUCTOR, 2.SPRINGFRAMEWWERTHUSENONTATIONS? ??@autowiredWithjava ?? CONCUTTATIONS LIKERWITHCONSTRUCTOR, ORFIELDINGESS.2.SPRINGFRAMEWWERTHUSENNOTATIONS
JVM (Java Virtual Machine) ?? ??
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thejvmenablesjava? "WriteOnce, Runynywhere"??? ?? excodecodethroughfourmaincomponents : 1. theclassloadersubsystemloads, ??, ? intinitializes.classfilesusingbootsprap, extension, andapplicationclassloaders, ensuringsecureandlazyclasloa
Java? ??? ?? ??? ??????
Aug 02, 2025 am 02:38 AM
?? ?? ? ?? ???? ???? ?? Java.Time ???? ???? ??????. 2. LocalDate, LocalDateTime ? LocalTime? ?? ?? ??? ??? ?????. 3. () ???? ???? ?? ??? ??? ????. 4. ???/???? ??? ???? ??? ????? ??? ??????. 5. ZonedDateTime ? Zoneid? ???? ???? ??????. 6. DateTimeFormatter? ?? ?? ? ?? ?? ?? ???; 7. ??? ?? ?? ?? ??? ????? ?? ??????. ?? Java? ?? ??? ???? ??? ??? ???? Java.Timeapi ??? ?? ??? ???????.
Google Chrome? ?? ??? ? ? ????
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chromecanopenlocalfiles likehtmlandpdfsbyusing "OpenFile"OrdraggingTheMintoTheBrowser; ensuretHeadDressStartSwithFile : ///; 2.SecurityRestrictionSblockajax, LocalStorage, andcross-folderaccessonfile : //; usealocalsertpython-mhtpython-mhtpython-mhtppy
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Aug 01, 2025 am 06:40 AM
NetworkPortSandfirewallsworkTogetToenableCommunication whileensuringsecurity.1.networkportSarevirtualendpointsnumbered0–65535, Withwell-nownports like80 (http), 443 (https), 22 (ssh) ? 25 (smtp) ?? (specservices
Java ??? ?? ?? : Spring Boot vs Quarkus vs Micronaut
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Pre-FormancetArtUptimeMoryUsage, Quarkusandmicronautleadduetocompile-timeprocessingandgraalvsupport, withquarkusoftenperforminglightbetterine serverless sinarios.2.thyvelopecosyste,
