Yog tias koj tab tom xav txog kev hloov pauv haujlwm lossis koj xav tau yooj yim los sau koj tus lej rau kev lom zem, koj yuav xav tsis thoob tias yuav siv cov lus programming li cas, thiab seb nws puas tuaj yeem kawm nws ntawm koj tus kheej. Java yog ib hom lus programming nrov tshaj plaws hauv ntiaj teb rau qhov laj thawj, thiab nws yog qhov tseeb ntawm qhov kev xaiv zoo tshaj yog tias koj xav qhia koj tus kheej. Txhawm rau kawm paub ntau ntxiv txog qhov zoo thiab qhov tsis zoo ntawm kev kawm Java thiab tau txais qee cov ntaub ntawv ntawm yuav ua li cas koj tuaj yeem pib hauv tsev, peb tau txais koj!
Cov kauj ruam
Nqe lus nug 1 ntawm 11: Nws puas yooj yim kawm Java?
Kauj Ruam 1. Nws tsis yog cua, tab sis nws yog ib qho ntawm cov lus yooj yim kawm
Java yog qhov pib ua haujlwm zoo lus vim nws ua rau koj lub zog nkag siab cov hauv paus ntsiab lus ntawm cov cai txhawm rau sau nws. Nws tseem yog txoj hauv kev yooj yim dua los ntawm Java mus rau lwm hom lus programming dua li nws yog mus los ntawm lwm hom lus rau Java. Txawm li cas los xij, zoo li txhua yam lus, nws yuav siv sijhawm, siv zog, thiab tsom mus rau qhov nkag siab tiag tiag yuav siv cov cai li cas kom tau txais txiaj ntsig zoo tshaj plaws.
Ntau tus coders ntseeg tias cov hauv paus thiab cov hauv paus ntsiab lus ntawm Java yog qhov yooj yim kawm ntau dua li lwm yam lus
Kauj Ruam 2. Java yog qhov nyeem tau yooj yim dua li lwm yam lus, tab sis nws nyuaj rau sau
Java yog verbose, lub ntsiab lus uas koj yuav tsum tau sau ntau kab ntawm cov cai kom ua tiav txoj haujlwm ntau dua li koj xav hauv lwm yam lus. Qhov no yog qhov zoo yog tias koj yog tus tshiab rau kev sau npe vim tias nws yooj yim dua rau txheej txheem thiab nkag siab cov ntawv sau ua dab tsi nrog txhua yam pom tseeb. Txawm li cas los xij, txij li koj xav tau sau ntau kab ntawm cov cai, muaj ntau chav los ua qhov yuam kev.
- Qee tus coders xav tias Java tuaj yeem nyuaj rau tus tswv ntau dua li lwm yam lus vim tias nws xav tau kab ntawv ntau dua los ua cov haujlwm thiab nws zoo li tsis ncaj ncees hauv qee txoj hauv kev tawm tsam.
- Tsuas yog ua piv txwv, yog tias koj xav luam "Zoo siab txais tos rau wikiHow!" hauv Java, koj xav tau tag nrho 7 kab sib cais ntawm cov cai: chav tseem ceeb { / / pej xeem tsis muaj dab tsi zoo li qub (Txoj hlua… args) { / / System.out.println ("Txais tos rau wikiHow!"); /} /}. Hauv qee yam zoo li Python, koj tsuas xav tau ib kab: luam tawm ("Zoo siab txais tos rau Wikihow!").
Nqe lus nug 2 ntawm 11: Puas yog nws tuaj yeem qhia koj tus kheej Java?
Kauj Ruam 1. Nws ntau dua li ua tau-nws yog txoj hauv kev ua tau ntau tshaj plaws
Koj tuaj yeem kawm paub yuav nyeem thiab sau Java ntawm koj tus kheej li cas. Hnub no, qhov no yog li cas cov kws tshaj lij tshaj lij tshaj lij pib ua haujlwm. Muaj ntau ntau yam kev qhia pub dawb, siv cov cuab yeej, cov lus qhuab qhia, thiab cov chav kawm tawm uas qhov no yooj yim dua puas tau. Txawm li cas los xij, nws yog ib qho tseem ceeb kom ua tau tiag tiag-yog tias koj tab tom yuav tus tswv Java tiag tiag, ua nws ntawm koj tus kheej yuav yog txoj hauv kev qeeb tshaj plaws los ua nws. Nws tuaj yeem ua tiav, tab sis nws yuav siv ob peb xyoos thiab ntau qhov kev coj ua.
- Coob tus kws tshaj lij ntseeg tias lawv yeej tsis dhau los ua tus kws tshaj lij hauv Java txog thaum lawv pib ua haujlwm nrog lwm cov coders. Nws nyuaj dua rau kev paub cov lus programming koj tus kheej yog tias koj tsis ua haujlwm nrog lwm tus kom pom qhov ua yuam kev thaum koj ua.
- Kwv yees li 69% ntawm txhua tus khoos phis tawj khoos phis tawj tsawg kawg ib nrab qhia tus kheej. Yog tias koj nyuam qhuav pib tawm, kev kawm ntawm koj tus kheej yog txoj hauv kev zoo mus.
Nqe lus nug 3 ntawm 11: Kuv yuav pib kawm Java li cas los ntawm kos?
Kauj Ruam 1. Pib los ntawm kev nyeem lossis saib cov lus qhia ntawm cov hauv paus ntawm cov lus
Tsuas yog nqus cov ntaub ntawv ntau npaum li koj tuaj yeem tau ob peb hnub yog li koj paub koj tus kheej nrog cov lus thiab kev xav ntawm cov lus. Koj tuaj yeem nrhiav cov ntaub ntawv no ntawm ib qho YouTube channel lossis lub vev xaib coding, tab sis qhov chaw zoo tshaj los pib kawm yuav yog nyob ntawm Oracle lub vev xaib, txij li lawv yog lub tuam txhab uas yog tus tswv Java. Lawv tshaj tawm tag nrho lawv cov ntaub ntawv thiab cov ntaub ntawv online ntawm https://www.oracle.com/java/technologies/javase-downloads.html. Pib los ntawm kev kawm:
- Cov xwm txheej. Cov no yog cov lus hais qhia rau txoj haujlwm seb yuav ua qee yam raws li lwm cov ntaub ntawv. Cov no yog lub neej tseem ceeb ntawm txhua txoj haujlwm. Cov xwm txheej ib txwm pib nrog "yog" ua raws los ntawm kab lus.
- Loops. Cov no yog cov cuab yeej uas tso cai rau koj rov ua cov txheej txheem ntawm qee lub sijhawm. Hauv Java, muaj peb txoj hauv kev los ua qhov no (thaum loops, rau loops, thiab ua thaum loops). Lawv yog qhov tseem ceeb yog tias koj xav tau tus lej los ua cov haujlwm nyuaj.
- Kev Ua Haujlwm/Txoj Kev. Cov lej ntawm cov lej no yog cov khoom siv rov qab siv tau uas ua tiav qee yam haujlwm. Muaj ntau txoj hauv kev los tsim cov haujlwm/txheej txheem hauv Java, tab sis cov hauv paus ntsiab lus tseem ceeb thaum ntxov.
- Kev tshaj tawm. Cov kab lus no sib tham me ntsis ntawm cov ntaub ntawv los ntawm kev muab nws hloov pauv thiab lub npe. Cov no yog qhov tseem ceeb thaum nws los txog rau xaiv cov khoom tshwj xeeb hauv koj cov cai.
Kauj Ruam 2. Ua raws nrog cov chav kawm online dawb kom tau txais kev tuav ntawm cov hauv paus
Muaj ntau qhov peev txheej nyob rau Java uas koj tuaj yeem tuaj yeem kawm nws yam tsis tas siv dab tsi ntawm chav kawm zoo nkauj lossis khau raj. Code Gym, Kawm Java Online, thiab Coding Bat yog txhua yam 100% pub dawb. Cov chaw no yuav qhia rau koj xyaum ua haujlwm, piav qhia tias kev siv lus li cas, thiab taug kev koj txhua yam uas koj xav paub txog qhov pib. Siv ob peb lub lis piam lossis hli ua kom tiav cov kev qhia no kom tau txais cov hauv paus.
- Kuj tseem muaj ntau pua chav kawm pub dawb ntawm coding nrog Java hauv YouTube. Oracle, lub tuam txhab uas yog tus tswv Java, txawm tias muaj lawv tus kheej cov yeeb yaj kiab pub dawb nyob ntawd. Lwm qhov kev xaiv zoo suav nrog Code Java, Programming nrog Mosh, thiab Amigos code.
- Koj tuaj yeem them rau chav kawm Java ntawm Udemy lossis Coursera yog tias koj xav tau. Qee tus neeg nyiam cov chav kawm no vim tias lawv xav tias mob siab rau nrog nws thaum lawv them nyiaj rau chav kawm.
Kauj Ruam 3. Xyaum sau cov khoos phis tawj yooj yim kom txawj siv cov syntax
Syntax yog qhov kev txiav txim thiab teeb tsa kab ntawm cov cai, thiab nws yog ib qho nyuaj rau kawm. Koj tsis tuaj yeem paub Java tsuas yog saib cov vis dis aus lossis nyeem phau ntawv. Koj yuav tsum tau xyaum ua qhov kev sau ntawv kom nkag siab cov syntax. Ib qho ua raws nrog cov lus qhia txhawm rau sau qee cov cai, lossis txhawm rau pib ua haujlwm pib, zoo li "nyob zoo ntiaj teb" txoj haujlwm. Qho khoom ua si ib puag ncig muaj kev lom zem nrog nws. Sim tsim koj tus kheej cov lej yooj yim siv cov txuj ci thaum koj kawm lawv. Cov haujlwm pib nrov xws li:
- Ib txoj haujlwm uas ua haujlwm yooj yim ua lej.
- Ib txoj haujlwm uas pom cov Factorials siv qhov ua haujlwm rov ua dua.
- Ib txoj haujlwm uas yuav txheeb xyuas seb lo lus koj sau yog palindrome lossis tsis.
- Ib txoj haujlwm uas ua haujlwm zoo li cov ntawv sau.
Nqe lus nug 4 ntawm 11: Kuv tuaj yeem txheeb xyuas yog tias kuv tau kawm tiag?
Kauj Ruam 1. Koom nrog hauv zej zog online thiab thov kom lawv tshuaj xyuas koj cov cai
Ib txoj hauv kev zoo tshaj los kawm yog tham nrog lwm tus programmer txog cov cai koj sau. Stack Overflow yog qhov nrov tshaj plaws ntawm cov coders, thiab Github yog qhov kev xaiv zoo yog tias koj xav faib cov lej loj lossis teeb meem nrog lwm tus neeg txhawb siab. Qhia tawm koj cov khoom, thov tawm tswv yim, thiab tawm tswv yim los ntawm lwm tus coders kom pom tias koj tuaj yeem txhim kho li cas!
- Yog tias koj muaj tus lej Reddit, r/programming thiab r/learnjava yog cov zej zog zoo kawg nkaus los koom nrog.
- Ntawm ib qho ntawm cov rooj sab laj lossis zej zog no, koj tuaj yeem thov koom nrog txoj haujlwm tsim kho! Muaj ntau qhov phiaj xwm phiaj xwm hauv zej zog nyob rau ntawd, thiab ntau ntawm lawv yuav tsis muaj teeb meem nqa tus pib ntawm lub nkoj los qhia lawv txoj hlua.
Nqe lus nug 5 ntawm 11: Nws puas zoo dua los qhia kuv tus kheej Java lossis kawm hauv chav kawm?
Kauj Ruam 1. Boot camps yog qhov zoo yog tias koj xav kawm nrawm thiab koj tab tom hloov haujlwm
Boot camps yog nrov dua li lawv tau ua vim tias lawv muab cov kws tshaj lij txoj hauv kev yooj yim los hloov txoj haujlwm. Cov phiaj xwm no hnyav feem ntau siv sijhawm 2-4 lub hlis los ua kom tiav, thiab lawv lub hom phiaj yog qhia koj txhua yam koj xav paub txog hom lus tshwj xeeb. Yog tias koj tsis muaj xyoo los siv kev kawm ntawm koj tus kheej, qhov no yog txoj hauv kev zoo mus!
Cov chaw pw hav zoov no feem ntau raug nqi $ 3, 000-13, 000. Txawm li cas los xij, cov kawm tiav feem ntau tso ncaj qha rau hauv cov haujlwm, koj ib txwm tau txais ntawv pov thawj thaum koj kawm tiav, thiab qhov nruab nrab coding boot camp kawm tiav tuaj yeem ua $ 100, 000 ib xyoos tom qab ob peb xyoos ntawm kev ua haujlwm
Kauj Ruam 2. Tsev kawm qib siab yog qhov zoo tshaj yog tias koj xav tau kev kawm tob thiab ntawv pov thawj
Yog tias koj nyob hauv tsev kawm theem siab lossis kawm xyoo sib txawv thiab sim txiav txim siab yam koj xav kawm hauv tsev kawm qib siab, computer science yog qhov kev xaiv zoo! Koj yuav kawm Java nrog rau ntau pawg ntawm lwm cov lus programming, thiab koj yuav kawm tiav nrog kev nkag siab tob txog txhua yam coding- thiab khoos phis tawj ntsig txog!
Yog tias koj twb mus kawm hauv tsev kawm qib siab lossis koj tau nkag mus rau hauv lub zog ua haujlwm tam sim ntawd thiab koj tab tom xav txog kev hloov pauv haujlwm, koj tsis tas yuav rov qab thiab tau txais BA hauv computer science los ua haujlwm coder. Ntau tus coders tau qhia tus kheej, thiab cov uas xav tau kev kawm raug cai hauv Java tuaj yeem ua nws sai dua thiab tau nyiaj tsawg dua nrog kev tawm dag zog
Kauj Ruam 3. Nws yog qhov zoo tshaj los kawm ntawm koj tus kheej yog tias koj xav kom muaj kev lom zem thiab coj nws qeeb
Yog tias koj xav kawm paub yuav ua li cas thiab koj xav kawm ntawm koj tus kheej, koj tuaj yeem qhia koj tus kheej kiag li. Nws yuav siv sijhawm ntev dua mus kawm ntawv, tab sis nws yuav lom zem dua thiab muaj txiaj ntsig zoo. Dhau li, yog tias koj xav ua txoj haujlwm no, koj tuaj yeem tau txais kev ntiav ua haujlwm nrog rau kev qhia tus kheej! Tej zaum nws yuav siv sijhawm ntev me ntsis rau koj kom paub cov lus.
Nqe lus nug 6 ntawm 11: Kuv yuav tsum tau xyaum dab tsi hauv Java?
Kauj Ruam 1. Rub tawm IDE los pib ua qhov chaws
Koj tuaj yeem sau cov txheej txheem hauv cov lus ua cov ntaub ntawv, zoo li Notepad lossis Microsoft Word, tab sis tsis muaj tus kws tshaj lij programmer ua qhov ntawd. Yog tias koj mob siab rau kev kawm, rub tawm IDE (kev txhim kho kev sib koom ua ke). Dab noj hnub yog tej zaum koj qhov thawj koom ruam zoo tshaj thaum koj tab tom pib tawm vim tias nws nrov thiab pub dawb, tab sis koj tseem tuaj yeem kawm ntawm IntelliJ, BlueJ, Xcode, lossis lwm yam IDE uas tau sib xws nrog Java.
Cov khoos kas no muaj lub luag haujlwm, cov cuab yeej, thiab UIs tsim tshwj xeeb rau cov coders. Yog lawm, koj tuaj yeem kawm ntawm Notepad yog tias koj xav tau tiag tiag, tab sis tsis muaj qhov taw tes. Ntau IDEs yog pub dawb, thiab koj yuav tsum tau kawm lawv los sib qhia, ua haujlwm, lossis sau cov cai tshaj lij ib yam nkaus
Nqe lus nug 7 ntawm 11: Koj puas tuaj yeem ua haujlwm ntawm txhua lub khoos phis tawj?
Kauj Ruam 1. Yog, Java yuav ua haujlwm ntawm txhua lub operating system
Java yog qhov siv tau dav thiab siv tau zoo ib yam lus, thiab nws yuav ua haujlwm zoo ib yam nkaus tsis hais koj nyob ntawm Apple OS, Windows, lossis Linux. Qhov no zoo heev, txij li koj tsis tas yuav tawm mus thiab yuav ib qho khoom siv kho vajtse lossis software kim. Qhov no yog vim li cas thaum tib neeg hais tias "leej twg tuaj yeem kawm paub tus lej," lawv txhais nws!
Nqe lus nug 8 ntawm 11: Nws siv sijhawm ntev npaum li cas rau kev paub Java?
Kauj Ruam 1. Nws tag nrho nyob ntawm, tab sis kev xyaum ua txhua hnub yuav ua kom cov txheej txheem ua tiav
Yog tias koj twb paub Python thiab C ++, tej zaum koj yuav muaj peev xwm kawm tau Java hauv ob peb hlis. Txawm li cas los xij, yog tias koj yog tus tshiab rau kev sau tus lej thiab koj tab tom qhia koj tus kheej, nws yuav siv sijhawm ntau xyoo los nkag siab zoo yuav ua li cas thiaj li ua tau txoj haujlwm nyuaj. Hauv ob qho xwm txheej, teem sijhawm qee lub sijhawm los xyaum ua txhua hnub yuav yog txoj hauv kev nrawm tshaj plaws los ua nws. Txawm hais tias nws tsuas yog 20-30 feeb hauv ib hnub, koj yuav tsum xyaum!
Nws kuj tseem zoo nyob ntawm koj txhais li cas los ntawm "tus tswv". Muaj ntau qhov sib txawv ntawm cov peev txheej tshwj xeeb uas koj tuaj yeem siv theoretically siv lub neej kawm paub txhua txoj hauv kev sib txawv los sau cov cai hauv Java
Nqe lus nug 9 ntawm 11: Puas yog Java yog hom lus zoo tshaj plaws los kawm?
Kauj Ruam 1. Nws yog hom lus thib 3 kom paub meej, yog li nws tsis yog qhov kev xaiv tsis zoo
Tom qab Python thiab Javascript (uas tsis zoo ib yam li Java), Java yog qhov lus thib peb nyiam tshaj plaws hauv ntiaj teb. Tshaj li 3 txhiab khoom siv khiav ntawm Java, yog li nws tsis zoo li tsis muaj qhov tsis txaus siv rau nws. Nws kuj tseem hais lus ntau zaus nws yooj yim dua los ntawm Java mus rau yam zoo li Python hloov lwm txoj hauv kev. Txhua yam txiav txim siab, Java yog qhov kev xaiv zoo yog tias koj tshiab rau kev sau npe!
Qhov nruab nrab Java tus tsim tawm khwv tau kwv yees li $ 100, 000 toj xyoo thiab muaj qhov xav tau ntau ntawm no, yog li yog koj lub hom phiaj yog nrhiav haujlwm, Java yog qhov kev xaiv zoo
Nqe lus nug 10 ntawm 11: Kuv tuaj yeem kawm Java hauv 24 teev li cas?
Kauj Ruam 1. Hmoov tsis zoo, nws yuav tsis tshwm sim
Yog tias koj tab tom ncig ncig online, koj yuav pom txhua yam "kawm paub code hauv 24 teev!" lossis "tus tswv coding hauv ib hlis!" cov chav kawm thiab cov phau ntawv. Tu siab kawg, lawv feem ntau yog gimmicks. Thaum koj tuaj yeem ua tiav ib tuj ntawm kev nce qib hauv ib lub lis piam lossis ob zaug yog tias koj mob siab rau koj tus kheej rau koj txoj kev kawm, koj yuav tsis kawm paub yuav ua li cas thiaj li sau tau cov cai hauv lub sijhawm luv luv no.
Nco ntsoov, Java yog yam uas koj yuav kawm tag nrho cov kev kawm hauv kev kawm qib siab hauv computer science. Qhov no tsis yog yam uas koj tuaj yeem kawm tag hmo
Nqe lus nug 11 ntawm 11: Vim li cas qee tus programmer qhia tias tsis kawm Java?
Kauj Ruam 1. Muaj qhov kev xav ntawm qee tus kws tshaj lij uas nws dhau lawm
Java yog ib qho ntawm cov txheej txheem txheej txheem qub tshaj plaws nyob rau ntawd, thiab ntau tus kws tshaj lij coders tsis nyiam qhov rov ua dua thiab hais lus nws yog. Nws tsuas yog siv sijhawm ntev los sau cov haujlwm hauv Java dua li nws sau nws ua lwm yam lus. Raws li qhov tshwm sim, qee cov kws tshaj lij ntseeg tias Java yog txoj hauv kev ntawm dodo. Muaj tseeb qhov pov thawj me ntsis Java tsis zoo ib yam li nws tau siv, tab sis nws yuav tsis ploj mus sai li sai tau. Yog tias nws tsis tawm ntawm kev pom zoo, nws yuav siv sijhawm ntev txij tam sim no.
