Cov kev daws teeb meem Java SE Development Kit yog dab tsi?

Nyob rau hauv lub ntiaj teb no ntawm programming, Java SE Development Kit (JDK) yuav siv sij hawm qhov chaw nruab nrab raws li ib tug tseem ceeb kev daws teeb meem rau tsim Java daim ntaub ntawv. JDK, txhais tau tias yog ib txheej ntawm cov cuab yeej uas ua rau nws yooj yim los tsim, sau, thiab khiav Java cov kev pab cuam, yog qhov tseem ceeb rau cov neeg tsim khoom uas xav ua kom zoo dua ntawm lub zog ntawm cov lus programming nrov. Hauv tsab xov xwm no, peb yuav tshawb xyuas kom meej tias qhov kev daws teeb meem Java SE Development Kit yog dab tsi thiab vim li cas nws thiaj suav tias yog ib feem tseem ceeb ntawm cov txheej txheem tsim software hauv Java.

1. Taw qhia rau Java SE Development Kit: Ib qho kev daws teeb meem tiav rau Java kev txhim kho

Java SE Development Kit (JDK) yog qhov kev daws teeb meem tiav rau cov neeg uas xav tsim cov ntawv thov hauv Java. Cov khoom siv no muab tag nrho cov cuab yeej thiab cov peev txheej tsim nyog rau kev tsim, sau thiab ua haujlwm Java program. Nrog rau JDK, cov neeg tsim khoom tuaj yeem siv tag nrho cov peev txheej ntawm Java lus thiab tsim kom muaj txiaj ntsig thiab ruaj ntseg daim ntawv thov. Tsis tas li ntawd, JDK suav nrog ntau lub tsev qiv ntawv thiab APIs uas pab txhawb kev txhim kho ntau hom kev siv, los ntawm cov ntawv thov desktop mus rau web thiab mobile applications.

Ib qho txiaj ntsig tseem ceeb tshaj plaws ntawm JDK yog nws cov ntaub ntawv nthuav dav thiab kev kawm. Cov khoom siv suav nrog cov lus qhia ntxaws ntxaws, qauv qauv, cov lus qhia siv, thiab ua tiav cov ntaub ntawv ntawm tag nrho Java nta thiab APIs. Qhov no ua rau nws yooj yim dua rau cov neeg tsim khoom kom kawm thiab siv Java, thiab tso cai rau lawv sau cov lej zoo thiab tswj tau txij thaum pib. Tsis tas li ntawd, JDK los nrog cov cuab yeej xws li Java compiler (javac) thiab debugger (jdb), uas tso cai rau cov neeg tsim khoom sau thiab kho lawv cov cai. zoo.

Lwm qhov tseem ceeb ntawm JDK yog nws lub peev xwm los txhawb cov platform sib txawv thiab kev ua haujlwm. Java tau raug tsim los ua ib hom lus portable, txhais tau hais tias cov kev pab cuam sau hauv Java tuaj yeem khiav ntawm ntau lub platform yam tsis tas yuav hloov pauv rau qhov chaws. Qhov no ua rau Java txoj kev loj hlob muaj peev xwm loj thiab muaj txiaj ntsig, vim cov neeg tsim khoom tuaj yeem sau ib zaug thiab khiav txhua qhov chaw. Tsis tas li ntawd, JDK tseem txhawb nqa ntau yam ntawm cov cuab yeej tsim kho nrov thiab cov txheej txheem, ntxiv kom yooj yim cov txheej txheem ntawm kev tsim cov ntawv thov hauv Java.

2. Cheebtsam ntawm Java SE Development Kit: Kev tawg thiab kev ua haujlwm

Java SE Development Kit (JDK) cov khoom siv muab tag nrho cov cuab yeej tsim nyog los tsim, sau ua ke, thiab debug Java daim ntawv thov. JDK suav nrog ntau yam tseem ceeb uas peb yuav ua raws li hauv qab no:

1. Java Development Tools (JDT): Cov cuab yeej no suav nrog Java compiler (javac) uas yog lub luag haujlwm rau kev hloov pauv qhov chaws mus rau hauv executable bytecode. Nws kuj suav nrog Java debugger (jdb) uas pab txheeb xyuas thiab kho qhov yuam kev hauv cov cai thaum lub sijhawm txhim kho.

2. Java Runtime Environment (JRE): JRE tso cai rau kev ua tiav ntawm Java daim ntawv thov. Nws suav nrog Java Virtual Machine (JVM) uas txhais thiab ua tiav cov bytecode tsim los ntawm cov neeg sau. Tsis tas li ntawd, nws muab cov tsev qiv ntawv thiab APIs (Application Programming Interface) kom Java daim ntawv thov tuaj yeem nkag mus rau cov haujlwm thiab cov yam ntxwv ntawm lub operating system.

3. JavaFX: Lub tsev qiv ntawv no tso cai rau kev tsim cov graphical user interfaces (GUI) rau Java daim ntawv thov. Nws suav nrog ntau yam cuab yeej thiab cov khoom siv, xws li kev tswj hwm, kev pom kev pom, thiab kev txhawb nqa multimedia. JavaFX yog qhov tshwj xeeb tshaj yog tsim nyog rau kev tsim cov ntawv thov desktop nrog cov kev sib txuas zoo nkauj thiab muaj zog.

Hauv cov ntsiab lus, JDK yog cov cuab yeej siv los tsim cov ntawv thov Java. Nws muab tag nrho cov cuab yeej tseem ceeb thiab cov khoom sib xyaw ua ke, kho qhov teeb meem, thiab khiav Java code. Nrog JDK, cov neeg tsim khoom muaj txhua yam lawv xav tau tsim cov ntawv thov Java kev ua tau zoo thiab nrog kev txaus siab thiab ua haujlwm zoo siv JavaFX.

3. Java Runtime Environment (JRE) yog dab tsi hauv Java SE Development Kit?

Java Runtime Environment (JRE) yog ib txheej software tsim los ntawm Oracle Corporation uas muab Java Virtual Machine (JVM) thiab lwm lub tsev qiv ntawv tsim nyog los khiav Java applications. Nws yog ib feem ntawm Java SE Development Kit (JDK) thiab yog qhov tseem ceeb rau kev txhim kho thiab xa mus rau Java daim ntawv thov.

JRE suav nrog JVM, uas yog lub luag haujlwm rau kev txhais lus thiab ua tiav Java code, nrog rau kev muab lub sijhawm ua haujlwm uas xav tau los ntawm cov ntawv thov. Nws kuj muaj cov tsev qiv ntawv hauv chav kawm thiab lwm cov ntaub ntawv tsim nyog rau kev ua tiav ntawm Java program.

Nws yog ib qho tseem ceeb kom muaj JRE ntsia kom raug ntawm koj lub cuab yeej txhawm rau khiav Java daim ntawv thov thiab applets ntawm koj lub tshuab. Koj tuaj yeem rub tawm thiab nruab JRE los ntawm lub vev xaib official Oracle. Thaum ntsia, JRE koom nrog lub operating system thiab npaj txhij los khiav Java daim ntawv thov yam tsis muaj kev teeb tsa ntxiv.

4. Sau thiab khiav Java code nrog Java SE Development Kit

Ua ntej sau thiab khiav Java code, koj yuav tsum muaj Java SE Development Kit (JDK) ntsia rau hauv koj lub cev. JDK muab cov cuab yeej tsim nyog los tsim, sau, kho, thiab khiav Java daim ntawv thov. Txhawm rau nruab JDK, koj yuav tsum mus xyuas lub vev xaib official Oracle thiab rub tawm cov ntawv sib txuas rau lub operating system siv.

Thaum JDK tau teeb tsa, koj tuaj yeem txuas ntxiv mus sau thiab khiav Java code los ntawm kab hais kom ua. Txhawm rau muab tso ua ke, koj yuav tsum qhib lub qhov rai hais kom ua thiab mus rau qhov chaw ntawm Java cov ntaub ntawv koj xav sau. Tom qab ntawd koj yuav tsum siv cov lus txib javac ua raws li Java cov ntaub ntawv npe. Qhov no yuav tsim cov ntaub ntawv nrog .class extension uas muaj cov bytecode ntawm daim ntawv thov.

Txhawm rau khiav Java code, koj yuav tsum siv cov lus txib Java ua raws li lub npe ntawm cov niam txiv chav kawm. Yog hais tias chav kawm niam txiv nyob hauv ib pob, suav nrog tag nrho cov txheej txheem ua raws li lub sijhawm thiab lub npe ntawm niam txiv chav kawm. Qhov no yuav khiav daim ntawv thov thiab tso tawm ib qho kev tso tawm ntawm kab hais kom ua.

5. Cov yam ntxwv tseem ceeb ntawm Java SE Development Kit rau kev txhim kho daim ntawv thov

Java SE Development Kit (JDK) muab tag nrho cov cuab yeej thiab thev naus laus zis los tsim cov ntawv thov Java. Qee qhov tseem ceeb tshaj plaws ntawm cov khoom siv no yog:

• Java Compiler: Lub JDK suav nrog Java compiler muaj zog uas tso cai rau koj los hloov cov lej code rau hauv bytecode executable ntawm Java platform.
• Cov Tsev Qiv Ntawv: Muaj ntau yam ntawm cov qauv Java cov tsev qiv ntawv suav nrog uas ua rau kev txhim kho daim ntawv thov yooj yim dua. Cov tsev qiv ntawv no muab cov haujlwm thiab cov cuab yeej rau kev ua haujlwm xws li kev siv hlua, kev tawm tswv yim / tso tawm, nkag mus rau hauv cov ntaub ntawv, thiab lwm yam.
• Cov cuab yeej Debugging: JDK muab cov cuab yeej debugging siab heev uas pab koj txheeb xyuas thiab kho qhov tsis raug hauv koj daim ntawv thov code. Cov cuab yeej no muab cov yam ntxwv xws li breakpoints, pawg kab, thiab kev tshuaj ntsuam xyuas sib txawv.

Lwm cov yam ntxwv tseem ceeb ntawm JDK suav nrog Java Runtime Ib puag ncig (JRE), uas tso cai rau koj los khiav Java daim ntawv thov ntawm txhua lub platform txhawb nqa, thiab cov ntaub ntawv qhia txog Java Development Kit, uas suav nrog kev qhia, piv txwv, thiab cov lus qhia los pab cov neeg tsim khoom tau txais txiaj ntsig zoo tshaj plaws. ntawm txhua yam khoom siv.

Hauv ntej, Java SE Development Kit yog ib qho cuab yeej tseem ceeb rau txhua tus tsim tawm Java. Nws muaj cov txheej txheem ua tiav ntawm cov cuab yeej thiab thev naus laus zis uas ua rau nws yooj yim los tsim thiab kho cov ntawv thov. Tsis tas li ntawd, nws muaj cov ntaub ntawv dav dav uas tso cai rau cov neeg tsim khoom siv kom zoo dua txhua yam ntawm cov khoom siv.

6. Cov txiaj ntsig ntawm kev siv Java SE Development Kit hauv kev txhim kho software

Siv Java SE Development Kit (JDK) hauv kev txhim kho software muaj ntau yam txiaj ntsig rau cov programmers thiab cov lag luam. Ua ntej, JDK muab tag nrho cov cuab yeej tsim nyog los sau, debug, thiab khiav Java daim ntawv thov. ua tau zoo. Qhov no suav nrog tag nrho cov tsev qiv ntawv, compilers thiab debuggers, uas pab txhawb txoj kev txhim kho thiab txhim kho kev tsim khoom.

Tsis tas li ntawd, JDK muaj ntau hom kev ua haujlwm siab heev thiab nta. Cov no suav nrog kev tswj hwm kev nco tsis siv neeg, tshwj tsis yog tuav, thiab muaj peev xwm ua haujlwm ntau yam haujlwm. txoj kev ua haujlwm tau zoo. Cov yam ntxwv no tso cai rau cov neeg tsim khoom los tsim cov ntawv thov muaj zog dua thiab siv tau yooj yim uas tuaj yeem daws cov teeb meem tiag tiag hauv ntiaj teb.

Lwm qhov txiaj ntsig tseem ceeb ntawm kev siv JDK yog cov peev txheej loj hauv online. Cov neeg tsim tawm tuaj yeem nkag mus rau cov ntawv qhia, cov ntaub ntawv raug cai, cov qauv qauv, thiab cov rooj sib tham rau kev pab thiab kev daws teeb meem. Qhov no ua kom cov txheej txheem txhim kho thiab lav qhov zoo ntawm cov software kawg. Tsis tas li ntawd, kev hloov kho tas li thiab txhim kho rau JDK kom ntseeg tau tias cov neeg tsim khoom ib txwm muaj kev nkag mus rau cov cuab yeej tshiab thiab thev naus laus zis.

7. Vim li cas Java SE Development Kit yog ib qho yuav tsum muaj kev daws teeb meem rau Java developers?

Java SE Development Kit (JDK) yog cov cuab yeej tseem ceeb rau Java developers. Muab cov peev txheej tsim nyog los tsim, suav sau, thiab debug Java daim ntawv thov. Yog tsis muaj JDK, cov neeg tsim khoom yuav tsis tuaj yeem tsim thiab khiav Java daim ntawv thov ntawm lawv lub tshuab. Qhov no ua rau JDK yog qhov kev daws teeb meem tseem ceeb rau txhua tus tsim tawm Java.

Ib qho ntawm cov laj thawj tseem ceeb ntawm JDK yog qhov tseem ceeb heev yog tias nws suav nrog Java compiler (javac), uas hloov cov lej sau los ntawm tus tsim tawm rau hauv kev ua tiav bytecode. Yog tsis muaj Java compiler, cov tsim tawm yuav tsis tuaj yeem hloov lawv cov cai rau hauv hom uas tuaj yeem ua tiav los ntawm Java virtual tshuab (JVM). JDK tseem muab cov tsev qiv ntawv dav dav ntawm cov chav kawm thiab cov cuab yeej uas tseem ceeb rau kev tsim cov ntawv thov Java zoo.

Tsis tas li ntawd, JDK los nrog ntau cov cuab yeej debugging uas ua rau nws yooj yim dua los txheeb xyuas thiab kho qhov yuam kev hauv koj cov cai. Cov cuab yeej no tso cai rau cov neeg tsim khoom los taug qab qhov kev ua tiav, tshuaj xyuas qhov sib txawv, thiab ua cov kev xeem. kauj ruam yog kauj ruam txhawm rau txheeb xyuas cov teeb meem tshwm sim. Yog tsis muaj JDK thiab nws cov cuab yeej debugging, cov neeg tsim khoom yuav muaj lub sijhawm nyuaj nrhiav thiab kho cov kab hauv lawv cov ntawv thov Java.

8. Java SE Development Kit installation thiab configuration yuav tsum

Java SE Development Kit (JDK) yuav tsum tsim thiab khiav cov ntawv thov hauv Java. Ua ntej koj pib programming, nws yog ib qho tseem ceeb uas koj yuav tsum ua raws li cov hauv qab no installation thiab configuration cov cai kom paub tseeb tias koj muaj ib puag ncig zoo:

1. Txheeb xyuas qhov sib haum ntawm koj lub operating system: JDK yog sib xws nrog cov kev khiav hauj lwm sib txawv, xws li Windows, MacOS, thiab Linux. Xyuas kom tseeb tias koj lub khoos phis tawj kev ua haujlwm txhawb nqa lub version ntawm JDK koj xav nruab.

2. Download tau lub JDK: Mus rau lub official Oracle lub website thiab download tau qhov tseeb version ntawm JDK. Thaum lub sijhawm rub tawm, xaiv qhov kev xaiv raug rau koj lub operating system. Lub pob installation yuav muaj nyob rau hauv compressed hom.

3. Nruab JDK: Thaum koj tau rub tawm cov ntaub ntawv, unzip nws mus rau qhov chaw tshwj xeeb ntawm koj xaiv. Tom qab ntawd, khiav cov ntaub ntawv installation thiab ua raws li cov lus qhia on-screen. Thaum lub sijhawm teeb tsa, koj yuav raug nug kom teeb tsa qee qhov kev hloov pauv ib puag ncig, xws li PATH hloov pauv, kom koj tuaj yeem nkag mus rau JDK los ntawm txhua qhov chaw hauv koj lub computer.

Nco ntsoov tias los ntawm kev ua raws li cov cai no thiab cov kauj ruam kev teeb tsa kom raug, koj yuav npaj pib tsim cov ntawv thov Java siv Java SE Development Kit.

9. Kev koom ua ke ntawm Java SE Development Kit nrog rau kev txhim kho ib puag ncig

Txhawm rau koom nrog Java SE Development Kit (JDK) nrog rau kev txhim kho ib puag ncig, peb yuav tsum ua raws qee cov kauj ruam tseem ceeb. Ua ntej, peb yuav tsum xyuas kom meej tias peb muaj qhov tseeb version ntawm JDK ntsia ntawm peb lub cev. Peb tuaj yeem rub tawm nws ncaj qha los ntawm Java official lub vev xaib. Thaum rub tawm, peb ua raws li cov lus qhia kev teeb tsa tau muab los ntawm tus installer.

Thaum peb tau teeb tsa JDK, nws yog ib qho tseem ceeb rau kev teeb tsa ib puag ncig hloov pauv ntawm peb lub cev. Qhov no yuav tso cai rau Java tsim thiab txhim kho cov cuab yeej ua haujlwm tau zoo. Txhawm rau txhim kho qhov hloov pauv ib puag ncig, peb yuav tsum qhib lub system tswj vaj huam sib luag thiab saib rau "Environment variables" kev xaiv. Nyob ntawd, peb ntxiv JDK txoj kev teeb tsa rau PATH hloov pauv.

Tom qab teeb tsa qhov hloov pauv ib puag ncig, peb tuaj yeem pib siv JDK hauv peb qhov kev loj hlob ib puag ncig. Muaj ntau qhov kev xaiv IDE muaj, xws li Dab Ntxwg Nyoog, NetBeans, thiab IntelliJ IDEA. Peb tuaj yeem xaiv qhov zoo tshaj plaws haum rau peb thiab teeb tsa nws siv JDK ntsia. Qhov no yuav tso cai rau peb kom tau txais txiaj ntsig zoo ntawm cov cuab yeej thiab kev ua haujlwm tau muab los ntawm JDK rau kev txhim kho Java daim ntawv thov.

10. Java SE Development Kit version kev tswj hwm: Kev tswj hwm qhov chaw tsim kho tshiab

Java SE Development Kit version kev tswj hwm yog qhov tseem ceeb los tswj hwm qhov chaw tsim kho tshiab thiab ua kom zoo dua ntawm txhua qhov kev txhim kho thiab kho kab laum uas tau tso tawm. Hauv qab no yog qee cov kauj ruam tseem ceeb los tswj Java SE Development Kit kom raug tso tawm hauv ib puag ncig kev txhim kho.

1. Txheeb xyuas qhov tam sim no version: Ua ntej pib qhov hloov tshiab, nws yog ib qho tseem ceeb kom paub qhov tam sim no version ntawm Java SE Development Kit ntsia rau hauv lub system. Qhov no Nws ua tau khiav cov lus txib java -version ntawm kab hais kom ua.
2. Xaiv qhov xav tau version: Thaum cov version tam sim no tau raug txheeb xyuas, nws yog ib qho tsim nyog los txiav txim siab qhov version ntawm Java SE Development Kit koj xav nruab. Nws raug nquahu kom sab laj nrog cov ntaub ntawv Java los kawm txog kev txhim kho thiab kev hloov pauv hauv txhua lub version.
3. Download tau thiab nruab qhov xaiv version: Thaum koj tau txiav txim siab ntawm qhov xav tau version, koj yuav tsum mus rub tawm los ntawm lub vev xaib Java official. Nws yog ib qho tseem ceeb kom paub meej tias koj xaiv qhov tseeb version rau lub operating system siv. Thaum rub tawm, tus installer yuav coj tus neeg siv los ntawm txoj kev teeb tsa.

Nws raug nquahu kom ua qhov kev sim dav dav tom qab txhua qhov hloov tshiab kom ntseeg tau tias kev sib raug zoo ntawm daim ntawv thov nrog cov tshiab ntawm Java SE Development Kit Ntxiv rau, nws yuav tsum tau coj mus rau hauv tus account tias qee lub tsev qiv ntawv sab nraud yuav tsis sib haum nrog txhua lub versions ntawm Java. Hauv cov xwm txheej no, nws yuav tsum tau hloov kho cov tsev qiv ntawv no lossis nrhiav lwm txoj hauv kev sib xws.

Hauv cov ntsiab lus, kev tswj hwm cov versions ntawm Java SE Development Kit yog qhov tseem ceeb los tswj hwm qhov kev txhim kho tshiab thiab ua kom zoo dua txhua qhov zoo uas lub platform no muaj. Los ntawm kev ua raws li cov kauj ruam tau hais los saum no, cov neeg tsim khoom tuaj yeem nyob nrog cov ntawv tshiab thiab ua kom ntseeg tau tias muaj kev sib raug zoo ntawm lawv daim ntawv thov.

11. Qhov sib txawv ntawm Java SE Development Kit thiab lwm yam kev txhim kho Java

Muaj ntau ntau Java kev daws teeb meem muaj nyob rau hauv kev ua lag luam, tab sis ib qho ntawm cov nyiam tshaj plaws thiab siv dav yog Java SE Development Kit (JDK). Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov qhov sib txawv ntawm JDK thiab lwm yam kev daws teeb meem ua ntej txiav txim siab seb ib qho twg yuav siv los tsim cov ntawv thov Java.

JDK yog ib lub suite ntawm kev txhim kho cov cuab yeej los ntawm Oracle uas muab txhua yam koj xav tau los tsim, sau ua ke, thiab debug Java daim ntawv thov. Nws suav nrog Java compiler, Java runtime ib puag ncig (JRE), Java chav tsev qiv ntawv, thiab lwm yam khoom siv thiab cov cuab yeej xav tau rau kev txhim kho. Piv nrog rau lwm cov kev daws teeb meem, xws li Dab Ntxwg Nyoog thiab NetBeans, JDK muab cov kev daws teeb meem ntau dua thiab nruab nrab, vim nws suav nrog txhua yam tsim nyog hauv ib pob.

Ib qho ntawm qhov sib txawv tseem ceeb ntawm JDK thiab lwm txoj kev txhim kho Java yog tias JDK yog platform ywj siab. Qhov no txhais tau tias cov ntawv thov tsim nrog JDK tuaj yeem khiav ntawm txhua qhov kev khiav haujlwm uas txhawb nqa Java. Lwm cov kev daws teeb meem, xws li Dab Ntxwg Nyoog thiab NetBeans, yuav xav tau kev teeb tsa ntxiv thiab kev vam khom kom ua haujlwm kom raug nyob rau hauv ntau lub tshuab sib txawv kev ua haujlwm. Tsis tas li ntawd, JDK tau txhawb nqa los ntawm Oracle, ua kom muaj kev txhawb nqa muaj zog thiab hloov kho tsis tu ncua kom ua raws li cov kev tsim kho tshiab hauv Java lus.

12. Tsis ntev los no Java SE Development Kit hloov tshiab thiab txhim kho

Qhov tseeb version ntawm Java SE Development Kit (JDK) coj nrog nws cov kev hloov tshiab thiab kev txhim kho uas ua rau muaj txiaj ntsig zoo rau Java kev txhim kho. Ntawm qhov tseem ceeb tshaj plaws tshiab nta yog kev siv Java 14, uas ntxiv cov yam ntxwv tshiab thiab kev ua haujlwm rau cov lus.

Ib qho kev txhim kho loj hauv JDK 14 yog kev qhia txog Java sau npe, uas yooj yim rau kev tsim cov ntaub ntawv tsis hloov pauv. Tsis tas li ntawd, kev txhim kho tau ua rau lub tsev qiv ntawv Java runtime, ua rau muaj ib qho kev ua tau zoo dua thiab kev cia siab ntau dua.

Lwm qhov tshiab tseem ceeb yog kev txhim kho hauv cov cuab yeej kuaj mob hu ua JEP 359. Cov cuab yeej no muab cov duab kos duab rau kev tsom xam thiab saib xyuas cov ntawv thov Java, ua kom yooj yim rau kev txheeb xyuas thiab kho cov teeb meem kev ua tau zoo lossis ua tsis raug ntawm lub sijhawm ua haujlwm.

13. Kev daws teeb meem tshwm sim thaum siv Java SE Development Kit

Thaum siv Java SE Development Kit, koj yuav ntsib qee yam teeb meem. Hauv qab no yog qee cov kev daws teeb meem los daws lawv:

1. yuam kev compiling code:
- Xyuas kom tseeb tias JDK raug teeb tsa hauv koj lub kaw lus thiab tias JAVA_HOME ib puag ncig hloov pauv tau teeb tsa kom raug. Yog tias nws tsis yog, teeb tsa JAVA_HOME los taw tes rau JDK cov npe teev npe.
- Xyuas kom tseeb tias koj muaj cov ntaub ntawv .java hauv cov npe raug thiab tias lawv tsis muaj qhov yuam kev syntax. Siv cov cuab yeej txhim kho kev sib koom ua ke (IDE) xws li Dab Ntxwg Nyoog lossis IntelliJ IDEA txhawm rau ua kom yooj yim txhawm rau txheeb xyuas qhov yuam kev.
- Txheeb xyuas qhov tsis sib haum xeeb ntawm cov cai thiab cov qauv ntawm JDK koj siv. Xyuas kom tseeb tias cov cai yog raws li qhov tsim nyog version ntawm JDK.

2. Yuam kev thaum khiav daim ntawv thov:
- Xyuas kom tseeb tias JDK tau teeb tsa kom raug thiab tias PATH ib puag ncig hloov pauv suav nrog qhov chaw nyob ntawm java.exe hais kom ua. Yog tias tsis yog, ntxiv txoj hauv kev rau JDK mus rau PATH.
- Txheeb xyuas yog tias koj tau xa cov tsev qiv ntawv tsim nyog thiab cov pob khoom hauv koj cov cai. Siv cov lus txib import los xyuas kom meej tias tag nrho cov dependencies raug teev kom raug.
- Yog tias koj siv IDE, xyuas kom tseeb tias qhov kev teeb tsa qhov project yog qhov tseeb thiab daim ntawv thov nkag nkag tau raug teeb tsa raug.

3. Yuam kev txhim kho lossis hloov kho JDK:
- Thov xa mus rau cov ntaub ntawv Oracle rau cov lus qhia ntxaws txog yuav ua li cas rau nruab thiab hloov kho JDK raws li koj lub operating system.
- Yog tias koj ntsib teeb meem thaum lub sijhawm teeb tsa, sim tshem tawm ib qho dhau los ntawm JDK ua ntej txuas ntxiv nrog kev teeb tsa. Qhov no tuaj yeem zam teeb meem kev sib raug zoo thiab kev tsis sib haum xeeb.
- Yog tias koj xav tau los daws cov teeb meem tshwj xeeb ntsig txog kev txhim kho lossis hloov kho JDK, koj tuaj yeem tshawb nrhiav online tsim cov rooj sib tham thiab cov zej zog kom muaj txiaj ntsig zoo thiab cov lus qhia.

14. Cov lus xaus txog Java SE Development Kit: Ib qho cuab yeej tseem ceeb rau kev txhim kho zoo hauv Java

Hauv kev xaus, Java SE Development Kit (JDK) yog qhov cuab yeej tseem ceeb rau txhua tus tsim tawm Java. Nws muab tag nrho cov cuab yeej tsim nyog los sau, sau, thiab khiav Java daim ntawv thov kom zoo. Nrog rau JDK, cov neeg tsim khoom tau nkag mus rau ntau lub tsev qiv ntawv thiab APIs uas ua rau nws yooj yim los tsim cov software zoo.

Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm JDK yog nws cov kev txhawb nqa cross-platform, uas txhais tau tias cov ntawv thov tsim nrog Java tuaj yeem khiav. ntawm ntau lub operating systems yam tsis tas yuav hloov pauv loj. Qhov no txo ​​cov nqi tsim kho thiab sijhawm txij li tsis tas yuav tsum sau thiab tswj cov ntawv sib cais ntawm software rau txhua lub platform.

Lwm qhov tseem ceeb ntawm JDK yog nws cov ntaub ntawv dav dav thiab cov neeg tsim tawm hauv zej zog. Muaj ntau cov kev pab cuam muaj nyob hauv online, xws li kev qhia, blogs, thiab cov rooj sab laj, qhov twg cov neeg tsim khoom tuaj yeem nrhiav kev daws teeb meem, sib qhia paub, thiab kawm cov tswv yim tshiab. Cov zej zog txhawb nqa no ua rau JDK tseem ceeb dua rau Java cov tsim tawm los ntawm kev tso cai rau lawv nkag mus rau kev sib sau ua ke thiab kev coj ua zoo tshaj plaws hauv zej zog.

Hauv luv luv, Java SE Development Kit (JDK) yog ib qho kev daws teeb meem rau kev tsim cov ntawv thov Java. Muab cov cuab yeej tseem ceeb thiab cov tsev qiv ntawv xav tau los tsim, debug, thiab khiav Java daim ntawv thov ntawm txhua lub platform txhawb nqa. Los ntawm suav nrog ntau yam kev ua haujlwm siab heev thiab cov ntaub ntawv dav dav, JDK dhau los ua qhov kev xaiv txhim khu kev qha rau cov neeg tsim khoom tab tom nrhiav los tsim cov ntawv thov Java muaj zog thiab scalable. Tsis tas li ntawd, nws txoj kev sib raug zoo nrog ntau lub tshuab ua haujlwm thiab nws cov zej zog loj ntawm cov neeg siv thiab cov tsim tawm ua rau nws muaj koob meej thiab txuas ntxiv hauv kev lag luam. Los ntawm kev siv JDK, cov neeg tsim khoom tuaj yeem ua kom zoo dua ntawm qhov hloov pauv thiab lub zog ntawm cov lus Java los tsim cov kev daws teeb meem tshiab uas ua tau raws li cov qauv kev ua tau zoo thiab kev ua haujlwm uas yuav tsum tau muaj nyob rau hauv ib puag ncig kev lag luam niaj hnub no. Hauv kev xaus, Java SE Development Kit cov kev daws teeb meem yog qhov tseem ceeb rau cov kws tshaj lij programming tab tom nrhiav kom muaj peev xwm ntawm Java thiab tsim cov ntawv thov qib siab. Nrog nws cov cuab yeej ua tiav thiab cov tsev qiv ntawv, JDK yog qhov kev xaiv zoo thiab muaj txiaj ntsig zoo rau txhua qhov kev txhim kho Java.