Ungalivula kanjani ifayela le-Java ▷➡️

Ukuvula amafayela e-Java kungaba umsebenzi obalulekile kulabo abacwila emhlabeni othakazelisayo wohlelo lwe-Java. Nakuba kungase kubonakale kuyinqubo esabisayo kwabaqalayo, empeleni ukuvula ifayela le-Java akuyona inkimbinkimbi njengoba kubonakala. Kulesi sihloko, sizohlola izindlela ezihlukahlukene zokuvula ifayela le-Java, kusukela ekusebenziseni i-IDE kuya ekusebenziseni umugqa womyalo. Uma ungumuntu othanda izinhlelo noma ufuna nje ukuqonda kangcono ukuthi amafayela e-Java asebenza kanjani, lesi sihloko sizokunikeza lonke ulwazi oludingayo ukuze ujule kulo mkhathi ojabulisayo. Ngakho-ke lungele ukwembula umlingo ongemuva kwalawa mafayela futhi uthole ukuthi ungawavula kanjani kalula.

1) Ungalivula kanjani ifayela le-Java: Isingeniso solimi lohlelo lwe-Java

Lapho uvula ifayela le-Java, kubalulekile ukuqonda ulimi lohlelo lwe-Java nokuthi lusebenza kanjani. I-Java iwulimi lokuhlela olusezingeni eliphezulu lokho kusetshenziswa ukuthuthukisa izinhlelo zokusebenza nezinhlelo. Ukuze uvule ifayela le-Java, uzodinga ukufaka indawo yokuthuthukisa i-Java, njenge-Eclipse noma i-NetBeans, ezokuvumela ukuthi ubhale, uhlanganise, futhi usebenzise ikhodi ye-Java.

Uma usufake indawo yokuthuthukisa i-Java, ungalandela lezi zinyathelo ukuze uvule ifayela le-Java:

Vula imvelo yokuthuthukisa i-Java.
Dala iphrojekthi entsha noma uvule iphrojekthi ekhona.
Thola ifayela le-Java ofuna ukulivula kuphrojekthi.
Chofoza kabili ifayela le-.java ukuze ulivule kusihleli sekhodi.

Uma ifayela le-Java selivuliwe kusihleli sekhodi, ungaqala ukusebenza kuso. Ungenza izinguquko kukhodi, wengeze izici, noma ulungise iziphazamisi. Khumbula ukulondoloza izinguquko zakho ngaphambi kokuhlanganisa nokusebenzisa ifayela le-Java ukuze ubone imiphumela kukhonsoli. Futhi, qiniseka ukuthi uyayiqonda i-syntax nemithetho yolimi lwe-Java ukuze ugweme amaphutha futhi uzuze ikhodi esebenzayo nesebenzayo.

2) Ukusetha indawo yokuthuthukisa ukuze uvule ifayela le-Java

Ukusetha indawo yokuthuthukisa futhi uvule ifayela le-Java, kufanele ulandele lezi zinyathelo:

1. Faka indawo yokuthuthukisa edidiyelwe ehambisana ne-Java (IDE), njenge-Eclipse, IntelliJ IDEA, noma i-NetBeans. Lawa ma-IDE ahlinzeka ngesixhumi esibonakalayo esinembile namathuluzi enza ukuthuthukisa nokulungisa amaphutha ekhodi ye-Java kube lula.

2. Uma usuyifakile i-IDE, yivule bese udala iphrojekthi entsha ye-Java. Lokhu kuzokuvumela ukuthi uhlele amafayela akho esakhiweni sephrojekthi futhi izokwenza kube lula ukuhlanganisa nokusebenzisa ikhodi yakho.

3. Manje, ngaphakathi kwephrojekthi yakho ye-Java, ungakha ifayela elisha le-Java ngokuchofoza kwesokudla kufolda efanelekile bese ukhetha "Okusha" bese uthi "Ifayela Le-Java." Ungangenisa futhi ifayela le-Java elikhona ohlelweni lwakho lwefayela ngokuchofoza kwesokudla kufolda ehambisanayo nokukhetha okuthi "Ngenisa" bese kuthi "Fayela."

3) Indlela yokusebenzisa i-IDE ukuvula amafayela e-Java: Igayidi yesinyathelo ngesinyathelo

Ukuze uvule amafayela e-Java usebenzisa i-IDE, udinga ukulandela izinyathelo eziyisisekelo. Okokuqala, qiniseka ukuthi une-IDE efakiwe kukhompyutha yakho. Ezinye izinketho ezidumile zifaka i-Eclipse, i-IntelliJ IDEA, ne-NetBeans. Uma usukhethe i-IDE oyikhethile futhi uyifake kahle, landela lezi zinyathelo ezilandelayo:

1. Vula i-IDE yakho bese udala iphrojekthi entsha noma uvule iphrojekthi ekhona.

Uma udala iphrojekthi entsha, khetha inketho eqondene ne-Java.
Uma uvula iphrojekthi ekhona, thola ifayela lokumisa iphrojekthi (ngokuvamile elinesandiso se-.java) bese uyivula.

2. Qiniseka ukuthi i-JDK (Java Development Kit) ifakiwe kukhompyutha yakho. I-JDK iyadingeka ukuze ihlanganise futhi iqhube izinhlelo ze-Java. Uma ungayifakanga, yilande futhi uyifake kuwebhusayithi esemthethweni ye-Oracle. Uma usuyifakile i-JDK, lungiselela i-IDE ukuze uyibone kahle. Lokhu Kungenziwa ngokusebenzisa izilungiselelo ze-IDE kusigaba sezinketho noma izintandokazi.

4) Izinyathelo ezidingekayo ukuze uhlanganise ifayela le-Java

Ukuze uhlanganise ifayela le-Java, izinyathelo ezilandelayo kufanele zilandelwe:

Qinisekisa ukuthi indawo yokuthuthukisa i-Java (JDK) ifakwe kahle ohlelweni. Uma kungenjalo, kufanele ulande futhi ufake inguqulo yakamuva ye-JDK kusayithi elisemthethweni le-Oracle.
Vula umugqa womyalo noma itheminali isistimu esebenzayo.
Zulazulela endaweni yefayela le-Java ofuna ukulihlanganisa.
Sebenzisa umyalo javac kulandelwe igama lefayela le-Java ukuze lihlanganiselwe. Ngokwesibonelo: javac MiArchivo.java.
Uma kungekho amaphutha enzekayo, umdidiyeli uzokhiqiza ifayela .class enegama elifanayo nelefayela le-Java. Leli fayela liqukethe i-bytecode engenziwa umshini we-Java virtual.

Kubalulekile ukuqaphela ukuthi kwezinye izimo kuyadingeka ukucacisa inguqulo ye-Java ezosetshenziswa uma uhlanganisa. Ukuze wenze lokhu, ungasebenzisa inketho -source kulandelwa inguqulo oyifunayo. Ngokwesibonelo: javac -source 1.8 MiArchivo.java.

Ukwengeza, izinketho ezengeziwe ezengeziwe zingasetshenziswa lapho kuhlanganiswa ifayela le-Java. Ezinye ezivame kakhulu yilezi:

-d: Ikuvumela ukuthi ucacise uhla lwemibhalo lapho amafayela ahlanganisiwe azogcinwa khona.
-classpath o -cp: Ikuvumela ukuthi ucacise indlela yokusesha eyengeziwe yamakilasi namafayela adingekayo ngesikhathi sokuhlanganiswa.
-encoding: Ikuvumela ukuthi ucacise umbhalo wekhodi wohlamvu ozowusebenzisa lapho ufunda amafayela omthombo.

5) Ungalusebenzisa kanjani uhlelo lwe-Java ngomugqa womyalo

Ukuqalisa uhlelo lwe-Java ngomugqa womyalo kuyindlela esheshayo nelula yokuhlola nokusebenzisa izinhlelo zokusebenza. Lapha sethula izinyathelo okufanele uzilandele:

Compilar el programa: Into yokuqala okudingeka siyenze ukuhlanganisa uhlelo lwe-Java usebenzisa umyalo we-javac olandelwa igama lefayela elithi.java. Ngokwesibonelo: javac MiPrograma.java. Lokhu kuzokhiqiza ifayela elithi .class eliqukethe i-bytecode yohlelo lokusebenza.
Qalisa uhlelo: Uma uhlelo seluhlanganisiwe, singalusebenzisa sisebenzisa umyalo we-java olandelwa yigama lesigaba esikhulu. Ngokwesibonelo: java MiPrograma. Qiniseka ukuthi awufaki isandiso se-.class uma usiqhuba.
Dlula izimpikiswano: Uma uhlelo lwakho ludinga ama-agumenti ukuze lusebenze kahle, ungawadlulisa uma uluqhuba. Ngokwesibonelo: java MiPrograma argumento1 argumento2. Ama-agumenti azotholwa uhlelo lokusebenza ngendlela eyinhloko njengamapharamitha wochungechunge lweyunithi yezinhlamvu args[].

Okuqukethwe okukhethekile - Chofoza Lapha Khawulela Amazwana kokuthunyelwe kwakho kwe-Instagram

Khumbula ukuthi ukuze usebenzise uhlelo lwe-Java, kufanele ufake i-JDK (Java Development Kit) kukhompyutha yakho. Uma ungakayifaki, ungayilanda kuwebhusayithi esemthethweni ye-Oracle. Kubalulekile futhi ukusho ukuthi kukhona amathuluzi okuthuthukisa ahlanganisiwe afana ne-Eclipse noma i-IntelliJ IDEA, akwenza kube lula ukuhlanganisa nokusebenzisa izinhlelo ze-Java.

6) Ukuhlola izinketho ezahlukene zokuvula ifayela le-Java kumasistimu wokusebenza ahlukene

Kulesi sigaba, sizohlola izinketho ezahlukene zokuvula ifayela le-Java ezinhlelweni ezahlukene ukusebenza. Ngezansi uzothola amathiphu, okokufundisa, namathuluzi angakusiza ukuxazulula noma yiziphi izinkinga ongahlangabezana nazo.

1. Hlola inguqulo ye-Java efakiwe: Ngaphambi kokuvula ifayela le-Java, kubalulekile ukuqinisekisa ukuthi unenguqulo efanele ye-Java efakwe kuyo uhlelo lwakho lokusebenza. Ungakwenza lokhu ngokusebenzisa umyalo othi “java -version” kutheminali noma ngomyalo womyalo. Uma ungenayo inguqulo efanele, ungalanda futhi ufake inguqulo yakamuva kusayithi elisemthethweni le-Oracle.

2. Lungiselela okuguquguqukayo kwemvelo: Ukuze uvule futhi usebenzise ifayela le-Java, udinga ukusetha okuguquguqukayo kwendawo efanele ohlelweni lwakho lokusebenza. Lokhu kuhlanganisa ukusetha i-"JAVA_HOME" eguquguqukayo yemvelo ukuze ikhombe kuhla lwemibhalo lokufakwa kwe-Java, kanye nokwengeza indlela eya ku-Java esebenzisekayo ekuguquguqukeni kwemvelo "PATH". Ungathola okokufundisa okuningiliziwe kokuthi ungalungisa kanjani lokhu okuguquguqukayo kwemvelo kumasistimu wokusebenza ahlukene ku-inthanethi.

3. Sebenzisa i-Java IDE: Uma umusha ku-Java noma ukhetha isisombululo esilula, ungakhetha ukusebenzisa indawo yokuthuthukisa ehlanganisiwe ye-Java (IDE), njenge-Eclipse, IntelliJ IDEA, noma i-NetBeans. Lawa ma-IDE ahlinzeka ngesixhumi esibonakalayo esibonakalayo esikuvumela ukuthi uvule, uhlele, uhlanganise futhi usebenzise amafayela e-Java kalula. Ukwengeza, banikeza izici namathuluzi amaningi, njengokugqamisa i-syntax, ukulungisa iphutha, nokuqedela ngokuzenzakalela ikhodi, okuzokusiza ukuthi ubhale futhi uhlole ikhodi yakho ngempumelelo kakhudlwana.

Khumbula ukuthi lapho uvula ifayela le-Java kumasistimu okusebenza ahlukene, kubalulekile ukuqaphela umehluko kuzilungiselelo namathuluzi atholakalayo. Ngalezi zeluleko kanye nezinsiza onazo, uzobe ulungele ukuhlola nokusebenza ngamafayela e-Java ezindaweni zokusebenza ezihlukene. Sikufisela inhlanhla ohambweni lwakho lokuhlela i-Java!

7) Ungawaxazulula kanjani amaphutha ajwayelekile lapho uzama ukuvula ifayela le-Java

Uma uzama ukuvula ifayela le-Java, ungase uhlangabezane namaphutha avamile. Ngenhlanhla, zikhona izixazululo ezitholakalayo zokuxazulula lezi zinkinga. ngempumelelo futhi ngokushesha. Nazi ezinye izinketho ongazama ukulungisa amaphutha avame kakhulu.

1. Hlola isandiso sefayela: Qiniseka ukuthi ifayela linesandiso esifanele esithi “.java” noma “.class”. Uma isandiso singafani, ifayela lingase lingavuleki ngendlela efanele. Ukuze ushintshe isandiso, mane uchofoze kwesokudla efayeleni, khetha okuthi “Qamba kabusha,” bese uthayipha isandiso esifanele.

2. Hlola inguqulo ye-Java: Uma uzama ukuvula ifayela le-Java elinenguqulo ye-Java engahambelani, ungase uhlangabezane namaphutha. Qiniseka ukuthi unenguqulo yakamuva ye-Java efakiwe nokuthi iyahambisana nefayela ozama ukulivula. Ungahlola inguqulo ye-Java oyifakile kukhompyutha yakho usebenzisa umyalo java -version emgqeni womyalo.

3. Sebenzisa i-IDE efanele noma umhleli wombhalo: Ngezinye izikhathi amaphutha lapho uzama ukuvula ifayela le-Java angaba ngenxa yezinkinga ngohlelo olusetshenzisiwe. Qiniseka ukuthi usebenzisa i-IDE efanelekile noma umhleli wombhalo ukuze uvule futhi uhlele amafayela e-Java. Ezinye izinketho ezidumile zifaka i-Eclipse, i-NetBeans, noma i-IntelliJ IDEA. Lawa ma-IDE anikezela ngamathuluzi nemisebenzi eklanyelwe ukusebenza ne-Java, okuzokwenza kube lula ukuvula nokuhlela amafayela akho.

8) Ukusebenzisa imitapo yolwazi yangaphandle ukuvula amafayela e-Java: Ukubukeka okujulile

Kuhlelo lwe-Java, ngokuvamile sidinga ukusebenza ngamafayela angaphandle, njengamafayela ombhalo noma amafayela anambambili. Ukuze senze lokhu, singasebenzisa imitapo yolwazi yangaphandle eyenza kube lula ngathi ukufunda nokubhala kulawa mafayela. ngempumelelo. Kulesi sigaba, sizohlola ngokujulile ukuthi ungasebenzisa kanjani imitapo yolwazi yangaphandle ukuze uvule amafayela e-Java.

Enye yemitapo yolwazi edume kakhulu yokusebenza ngamafayela ku-Java i-Apache Commons IO. Lo mtapo wezincwadi uhlinzeka ngezinhlobonhlobo zemisebenzi nezinsiza zokuphatha amafayela, njengokufunda nokubhala amafayela, ukuhlunga amafayela ngokwesandiso noma ngosayizi, ukukopisha nokususa amafayela, phakathi kokunye. Nasi isibonelo sendlela yokusebenzisa i-Apache Commons IO ukuze uvule ifayela lombhalo futhi ufunde elikuqukethe:

«`java
import org.apache.commons.io.FileUtils;
ngenisa i-java.io.File;
ngenisa i-java.io.IOException;

I-FileExample yekilasi lomphakathi {
i-public static void main(String[] args) {
Ifayela lefayela = Ifayela elisha(«path/to/file.txt»);

zama {
Okuqukethwe kwentambo = FileUtils.readFileToString(ifayela, "UTF-8");
System.out.println(«Okuqukethwe kwefayela: » + okuqukethwe);
} ukubamba (IOException e) {
System.out.println(«Ifayela lokufunda iphutha: » + e.getMessage());
}
}
}
«`

Kulesi sibonelo, siqale singenise ikilasi elithi `FileUtils` kusuka kulabhulali ye-Apache Commons IO kanye nezigaba ze-`File` kanye ne-`IOException` zisuka kuphakheji ethi `java.io`. Okulandelayo, sakha isibonelo sekilasi `lefayela` elimele ifayela esizolivula. Ngaphakathi kwebhulokhi ethi `zama`, sisebenzisa indlela ethi `readFileToString` yokuthi `FileUtils` ukufunda okuqukethwe kwefayela futhi sikugcine kolunye uhlobo `String`. Ekugcineni, siphrinta okuqukethwe kwefayela nge-console.

Okuqukethwe okukhethekile - Chofoza Lapha I-GTA 5 Igcwele Ukuqhekeka ku-PC

Nakuba i-Apache Commons IO iyindlela ethandwa kakhulu, maningi amanye amalabhulali angaphandle nama-API atholakalayo ukuze asebenze ngamafayela ku-Java. Eminye yalemitapo yolwazi ifaka i-Apache POI yokufunda nokubhala amafayela. Ihhovisi leMicrosoft, uJackson ukuze asebenze namafayela e-JSON kanye ne-JSoup ukuze akhiphe ulwazi emakhasini ewebhu. Lapho ukhetha umtapo wolwazi ozosebenza ngamafayela, kubalulekile ukucabangela izidingo ezithile zephrojekthi kanye nokusebenza okunikezwa umtapo wolwazi ngamunye ngaphambi kokwenza isinqumo.

9) Ungalivula kanjani ifayela le-JAR ku-Java: Inqubo enemininingwane

Ukuze uvule ifayela le-JAR ku-Java, kunezinyathelo ezimbalwa okudingeka uzilandele ngokuningiliziwe. Lapha sizokukhombisa inqubo Igxathu emvakwe gxathu:

1. Qinisekisa ukuthi unenguqulo yakamuva yesofthiwe ye-Java Development Kit (JDK) efakwe kukhompuyutha yakho. Ungayilanda kusayithi elisemthethweni le-Java.

2. Thola ifayela le-JAR ofuna ukulivula ohlelweni lwakho. Khumbula ukuthi ifayela le-JAR yifayela elicindezelwe equkethe amafayela e-Java kanye nemethadatha ehlobene. Ngokuvamile, amafayela e-JAR asetshenziselwa ukusabalalisa izinhlelo zokusebenza ze-Java noma imitapo yolwazi.

3. Uma usulitholile ifayela le-JAR, ungalivula usebenzisa umugqa womyalo noma ithuluzi lokuvula ifayela njenge-WinRAR noma i-7-Zip. Uma ukhetha ukusebenzisa umugqa womyalo, mane usebenzise umyalo olandelayo:

java -jar file.jar

Lezi yizinyathelo eziyisisekelo zokuvula ifayela le-JAR ku-Java. Khumbula ukuthi uma ifayela lakho le-JAR liqukethe uhlelo lwe-Java, ungase udinge ukuhlangabezana nezimfuneko ezithile ezengeziwe, njengokusetha okuguquguqukayo kwendawo noma ukufaka okunye okuncikile. Qiniseka ukuthi ubheka imibhalo efanele noma okokufundisa ukuze uthole imiyalelo eqondile uma kunesidingo. Ngalezi zinyathelo, uzobe ulungele ukuvula nokusebenzisa amafayela e-JAR ngempumelelo endaweni yakho yokuthuthukisa i-Java.

10) Ukusebenza Namafayela Ekhodi Yomthombo we-Java: Imikhuba Engcono Kakhulu Yokuhlala Uhlelekile

1. Isakhiwo sefolda

Lapho usebenza ngamafayela ekhodi yomthombo we-Java, kubalulekile ukugcina ukwakheka kwefolda ehlelwe kahle. Lokhu kuzosiza ukuthuthukisa ukufundeka kwekhodi, kwenze kube lula ukuthola amafayela, futhi kuvumele ukubambisana okungcono phakathi konjiniyela. Umkhuba omuhle ukuhlukanisa ikhodi yomthombo ibe amafolda ahlukene ngokuya ngokusebenza kwayo noma imojula. Isibonelo, ungakha amafolda ahlukene ezilawuli, amamodeli, ukubuka, nezinsiza. Ukwengeza, kuyatuseka ukusebenzisa amagama achazayo navumelanayo kumafolda namafayela, ukuze kube lula ukubona ukuthi ngalinye liqukethe ini.

2. Amafayela ekhodi yomthombo

Ngaphezu kwesakhiwo sefolda, kukhona imikhuba emihle kakhulu lapho usebenza namafayela omthombo we-Java. Okokuqala, kubalulekile ukugcina ikhodi ehlanzekile futhi efundekayo. Lokhu kuhilela ukusebenzisa ukuhlehlisa okungaguquguquki, ukuhlela ukuguquguquka okuchazayo kanye namagama ezindlela, nokusebenzisa amazwana ukuchaza izingxenye eziyinkimbinkimbi noma ezibalulekile zekhodi. Kubalulekile futhi ukugwema imigqa yekhodi emide kakhulu, njengoba lokhu kungenza ikhodi kube nzima ukuyifunda nokuyiqonda.

3. Ukulawulwa kwenguqulo

Ukusebenzisa ithuluzi lokulawula inguqulo kubalulekile ekugcineni ukuhleleka kwamafayela akho ekhodi yomthombo we-Java. Lokhu kukuvumela ukuthi uphathe izinguquko ezenziwe kukhodi ngokuhamba kwesikhathi, usize ukusebenzisana phakathi konjiniyela, futhi ubuyisele izinguquko uma kudingeka. Ithuluzi elidumile lokulawula inguqulo i-Git, ekuvumela ukuthi udale amagatsha ukuze asebenze ekusebenzeni okusha noma ukulungisa iziphazamisi, uhlanganise izinguquko ezenziwe onjiniyela abahlukene, futhi ugcine umlando ophelele wazo zonke izinguquko ezenziwe kukhodi. Kutuswa ukuthi kusetshenziswe amagatsha ahlukene ukuze kuthuthukiswe izici ezintsha nokuxazulula izinkinga, futhi kuzihlanganise negatsha eliyinhloko (isb., igatsha elikhulu) uma sezihloliwe futhi zabuyekezwa kahle.

11) Ungalishintsha kanjani futhi ulakhe kabusha ifayela le-Java elikhona

Omunye wemisebenzi evamile ekuthuthukisweni kwesofthiwe ukulungisa nokwakha kabusha amafayela akhona e-Java. Kwesinye isikhathi izinguquko zidinga ukwenziwa kukhodi yomthombo ukuze kwengezwe ukusebenza okusha noma ukulungisa iziphazamisi. Lapha sizokukhombisa ukuthi ungabhekana kanjani nale nqubo isinyathelo ngesinyathelo.

Ukuqala, kubalulekile ukufinyelela ifayela le-Java ofuna ukulishintsha. Ungasebenzisa noma isiphi isihleli sombhalo noma indawo yokuthuthukisa edidiyelwe (IDE) efana ne-Eclipse, i-NetBeans, noma i-IntelliJ IDEA. Vula ifayela le-Java kusihleli osithandayo futhi uthole ingxenye yekhodi ofuna ukuyishintsha.

Uma ususitholile isigaba ofuna ukusishintsha, ungaqala ukwenza izinguquko ezidingekayo. Ungangeza imigqa emisha yekhodi, uguqule okuguquguqukayo, noma ususe zonke izingxenye zekhodi. Qiniseka ukuthi uwuqonda ngokugcwele umthelela wezinguquko zakho futhi wenze ukuhlola okubanzi ukuze uqinisekise ukuthi awuzange wethule iziphazamisi ezintsha.

12) Vula Ifayela Le-Java Ngamathuluzi Okuhlela Athuthukile: Umhlahlandlela Wonjiniyela Abanolwazi

Ithuluzi lokuhlela elithuthukisiwe lokuvula nokulungisa amafayela e-Java lingaba usizo kakhulu konjiniyela abanolwazi abafuna ukwenza izinguquko eziyinkimbinkimbi kumaphrojekthi abo. Ngenhlanhla, kunezinketho ezimbalwa ezinamandla ezitholakalayo ezenza le nqubo ibe lula. Kulo mhlahlandlela, sizokukhombisa ukuthi ungalivula kanjani ifayela le-Java usebenzisa amathuluzi okuhlela athuthukile, sikunikeze izinsiza ezidingekayo ukuze wenze izinguquko kwikhodi yakho ngempumelelo.

Inketho edumile yokuvula nokuhlela amafayela e-Java yi-IntelliJ IDEA IDE (Indawo Yokuthuthukiswa Okudidiyelwe). Le softhiwe enamandla ihlinzeka ngezinhlobonhlobo zezici ezenza kube lula ukuzulazula nokuguqula ikhodi. Ukuze uvule ifayela le-Java ku-IntelliJ IDEA, vele uvule i-IDE bese ukhetha “Vula Ifayela” kumenyu ethi “Ifayela”. Okulandelayo, zulazulela kumkhombandlela oqukethe ifayela le-Java ofuna ukulihlela bese ulikhetha.

Elinye ithuluzi eliwusizo lokuvula nokuhlela amafayela e-Java yi-JEdit. I-JEdit ingumhleli wombhalo womthombo ovulekile onikeza izici ezihlukahlukene ezithuthukile zonjiniyela be-Java. Ukuze uvule ifayela le-Java ku-JEdit, vula uhlelo bese ukhetha okuthi "Vula" kumenyu ethi "Ifayela". Zulazulela kunkomba equkethe ifayela le-Java bese uyikhetha. Uma isivuliwe, uzokwazi ukubuka futhi uhlele ikhodi yomthombo wefayela le-Java nazo zonke izici zokuhlela ezithuthukisiwe ezinikezwa yi-JEdit.

Okuqukethwe okukhethekile - Chofoza Lapha Indlela Yokusebenzisa I-Netflix Party Kumakhalekhukhwini

13) Uzilungisa kanjani izinkinga zokusebenzisana lapho uvula amafayela e-Java kuzinguqulo ezindala zolimi

Uma unezinkinga zokusebenzisana lapho uvula amafayela e-Java ezinguqulweni ezindala zolimi, kunezixazululo ezimbalwa ezingaba khona zokuxazulula le nkinga. Ngezansi isinyathelo ngesinyathelo esizokusiza ukuxazulula lesi simo:

1. Hlola inguqulo ye-Java oyisebenzisayo: Ngaphambi kokuqhubeka nokuxazulula izinkinga zokusebenzisana, kubalulekile ukuqinisekisa ukuthi usebenzisa inguqulo efanele ye-Java. Ungakwenza lokhu ngokubheka inguqulo efakwe emshinini wakho usebenzisa umyalo olandelayo kulayini womyalo:
«`
inguqulo ye-java
«`
Qiniseka ukuthi unenguqulo yakamuva ye-Java efakiwe ukuze ugweme izinkinga zokusebenzisana.

2. Buyekeza inguqulo yakho ye-Java: Uma usebenzisa inguqulo yakudala ye-Java, ungase uhlangabezane nezinkinga zokusebenzisana lapho uvula amafayela e-Java. Kulokhu, kungcono ukubuyekezela enguqulweni yakamuva ye-Java etholakalayo. Ungayilanda kuwebhusayithi esemthethweni ye-Java futhi uyifake emshinini wakho. Qiniseka ukuthi ulandela imiyalelo yokufaka ehlinzekwe yi-Java ukuze uyifake kahle.

3. Sebenzisa ithuluzi lokuguqula inguqulo: Ezimeni lapho kungenakwenzeka khona ukuthuthukisa inguqulo yakho ye-Java noma uma udinga ukuvula amafayela e-Java ezinguqulweni ezindala enguqulweni entsha yolimi, ungasebenzisa ithuluzi lokuguqula inguqulo. Lawa mathuluzi akuvumela ukuthi uguqule amafayela e-Java usuka kwenye inguqulo uye kwenye, akuvumela ukuthi uvule amafayela ngaphandle kwezinkinga zokusebenzisana. Ungathola okokufundisa ku-inthanethi kokuthi ungasebenzisa kanjani lawa mathuluzi ukukusiza ukuguqula ngempumelelo.

Ngokulandela lezi zinyathelo, uzokwazi ukuxazulula izinkinga Ukuhambisana lapho uvula amafayela e-Java ezinguqulweni ezindala zolimi. Khumbula ukuhlola nokubuyekeza inguqulo yakho ye-Java, kanye nokusebenzisa amathuluzi okuguqula uma kunesidingo. Kuhlale kubalulekile ukuqinisekisa ukuthi unenguqulo efanele ye-Java ukuze uqinisekise ukuhambisana okufanele namafayela ofuna ukuwavula.

14) Ukuhlola izandiso zefayela ezihlukene ku-Java nokuthi ungayivula kanjani ngayinye

I-Java iwulimi lokuhlela oluguquguqukayo olukwazi ukuphatha izinhlobo ezahlukene zamafayela. Uhlobo lwefayela ngalunye lunesandiso salo, futhi kulesi sihloko sizohlola izandiso zefayela ezihlukene ku-Java nokuthi singayivula kanjani ngayinye. Okulandelayo, sizothola ukuthi singasebenza kanjani ngamafayela ombhalo, amafayela kanambambili namafayela ezithombe ku-Java.

1. Amafayela ombhalo (.txt):

Amafayela ombhalo yiwona ajwayeleke kakhulu futhi kulula ukuwasebenzisa ku-Java. Ungakwazi ukuvula ifayela lombhalo usebenzisa ikilasi IFayileReader futhi ufunde okuqukethwe kwayo usebenzisa ikilasi I-BufferedReader. Nasi isibonelo sendlela yokuvula nokufunda ifayela lombhalo ku-Java:


import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class EjemploArchivoTexto {
    public static void main(String[] args) {
        try {
            FileReader archivo = new FileReader("archivo.txt");
            BufferedReader lector = new BufferedReader(archivo);
            String linea;
            
            while ((linea = lector.readLine()) != null) {
                System.out.println(linea);
            }
            
            lector.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2. Amafayela kanambambili (.dat):

Amafayela kanambambili agcina idatha ngefomethi engafundeki ngokuqondile abantu. Zivame ukusetshenziselwa ukugcina idatha eyinkimbinkimbi, njengezinto ze-serialized. Ukuze uvule ifayela kanambambili ku-Java, ungasebenzisa ikilasi Ifayela LokufakaUkusakaza futhi ufunde idatha usebenzisa ikilasi IdathaInputStream. Ngezansi isibonelo sendlela yokuvula nokufunda ifayela kanambambili ku-Java:


import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;

public class EjemploArchivoBinario {
    public static void main(String[] args) {
        try {
            FileInputStream archivo = new FileInputStream("archivo.dat");
            DataInputStream lector = new DataInputStream(archivo);
            
            int numero = lector.readInt();
            double valor = lector.readDouble();
            String texto = lector.readUTF();
            
            System.out.println("Numero: " + numero);
            System.out.println("Valor: " + valor);
            System.out.println("Texto: " + texto);
            
            lector.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

3. Amafayela ezithombe (.jpg, .png, .gif):

I-Java ingaphinda ivule futhi ilawule amafayela esithombe adumile njenge-JPG, i-PNG, ne-GIF. Ukuze usebenze ngamafayela ezithombe, ungasebenzisa ikilasi ISITHOMBE kanye nekilasi I-BufferedImage. Ngezansi isibonelo sendlela yokuvula nokubonisa isithombe ku-Java:


import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

public class EjemploImagen {
    public static void main(String[] args) {
        try {
            BufferedImage imagen = ImageIO.read(new File("imagen.jpg"));
            int ancho = imagen.getWidth();
            int alto = imagen.getHeight();
            
            System.out.println("Ancho: " + ancho);
            System.out.println("Alto: " + alto);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Ngale miyalo, usukulungele ukuhlola futhi uvule izandiso zefayela ezihlukile ku-Java! Khumbula ukuthi amathuba abanzi futhi kukhona amakilasi amaningi namathuluzi atholakalayo okusebenza ngezinhlobo ezahlukene zamafayela. Qhubeka ufunda futhi uzame nge-Java ukuze wandise ulwazi lwakho lokuphatha amafayela!

Sengiphetha, ukuvula ifayela le-Java kungaba umsebenzi olula uma kulandelwa izinyathelo ezifanele. Kubalulekile ukucabangela indawo efanele yesikhathi sokusebenza futhi uqinisekise ukuthi unenguqulo efanele ye-Java efakwe kusistimu yakho. Ukwengeza, kubalulekile ukuhlola ukwakheka kanye ne-syntax yekhodi ukugwema amaphutha ngesikhathi sokuvulwa.

Kutuswa ukusebenzisa amathuluzi okuthuthukisa njengama-IDE ukuze kube lula inqubo yokuvula nokuhlela amafayela e-Java. Lawa mathuluzi anikeza izici ezithuthukisiwe, njengokugqamisa i-syntax, ukulungisa iphutha, nokuqedela ngokuzenzakalela, ezingathuthukisa ukusebenza kahle nokunemba kokuthuthukiswa kwesofthiwe ku-Java.

Kubalulekile ukukhumbula ukubaluleka kokuphepha lapho uvula amafayela e-Java emithonjeni engaziwa. Kutuswa ukuthi usebenzise isofthiwe ebuyekeziwe ye-antivirus kanye nezinhlelo zokuphepha ukuze uthole futhi uvimbele izinsongo ezingaba khona.

Ngamafuphi, ukuvula ifayela le-Java kudinga ulwazi oluyisisekelo lobuchwepheshe, kodwa ngokuzijwayeza nokusebenzisa amathuluzi afanele, kungafezwa. indlela ephumelelayo. Ukuhlala unolwazi lwakamuva ngezinguqulo zakamuva ze-Java nokusebenzisa isofthiwe ethembekile yokuphepha kungaqinisekisa indawo yokuthuthukiswa ephephile nekhiqizayo.

USebastian Vidal

Ngingu-Sebastián Vidal, unjiniyela wekhompyutha ozifelayo ngobuchwepheshe kanye ne-DIY. Ngaphezu kwalokho, ngingumdali we tecnobits.com, lapho ngabelana khona ngezifundo zokwenza ubuchwepheshe bufinyeleleke kakhudlwana futhi buqonde wonke umuntu.