An warware: shigar da java akan Linux

A cikin wannan labarin, za mu mai da hankali kan shigar da aikace-aikacen Java akan yanayin Linux. Za mu shiga cikin nitty-gritty na tsarin shigarwa, tattaunawa akan mahimman ɗakunan karatu, ayyuka, da sauran abubuwa don sa aikace-aikacen Java ɗinku ya yi aiki ba tare da matsala ba akan Linux.

** Sanya Java akan Linux ***

Kafin mu ci gaba da mafita, yana da mahimmanci a sami kyakkyawar fahimta game da Java da kuma dacewarta a cikin ci gaban duniya. Java, yaren shirye-shiryen da ke da alaƙa da abu, ana amfani da shi don ƙirƙirar aikace-aikacen da za su iya gudana akan dandamali da yawa, gami da Linux, macOS, da Windows. Ya shahara sosai saboda iyawar sa, sauƙin amfani, da ɗimbin ɗakunan karatu da APIs.

Ana shigar da Kit ɗin Ci gaban Java (JDK)

Don fara shigar da Java akan Linux, yana da mahimmanci a fara shigar da Kit ɗin Ci gaban Java (JDK). JDK ya zo tare da Java Runtime Environment (JRE), wanda ya zama dole don aiwatar da shirye-shiryen Java akan tsarin Linux ɗin ku. Matakan da ke ƙasa dalla-dalla yadda ake cim ma wannan aikin:

1. Sabunta jerin fakitin Linux ɗinku ta hanyar gudanar da umarni mai zuwa a cikin tasha:

   sudo apt-get update

2. Shigar da kunshin OpenJDK tare da umarni mai zuwa:

   sudo apt-get install openjdk-11-jdk

3. Bayan nasarar shigar da kunshin OpenJDK, tabbatar da shigarwa ta hanyar aiwatar da umarnin:

   java -version

   Idan shigarwa ya yi nasara, ya kamata ku ga bayani game da sigar Java da aka shigar.

Saita Canjin Muhalli

Bayan shigar da JDK, yana da mahimmanci don saita masu canjin yanayi don haɓaka amfani da tsarin yanayin ci gaban ku.

• HANYA: Wannan madaidaicin ya ƙunshi jerin kundayen adireshi waɗanda tsarin ke neman shirye-shirye masu aiwatarwa. Ƙara JDK zuwa wannan jeri yana tabbatar da cewa an gane Java kuma ana samun dama daga kowane kundin adireshi akan tsarin Linux ɗin ku.
• Rariya Wannan madaidaicin yana wakiltar jagorar shigarwa na JDK. Sau da yawa wasu aikace-aikacen tushen Java suna amfani da shi don gano wurin shigarwar JDK.

Domin saita waɗannan masu canjin yanayi, bi matakan da ke ƙasa:

1. Bude fayil ɗin /etc/environment a cikin editan rubutu tare da gata na gudanarwa. Misali, zaku iya amfani da nano ta hanyar buga:

sudo nano /etc/environment

2. Ƙara layin masu zuwa zuwa ƙarshen fayil ɗin, maye gurbin "/ naku / java / hanya" tare da ainihin hanyar shigarwa na JDK:

JAVA_HOME="/your/java/path"
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH

3. Ajiye fayil ɗin kuma fita editan rubutu.

4. Sake loda masu canjin yanayi ta hanyar aiwatar da umarni:

source /etc/environment

Yanzu, kun yi nasarar shigar da sigar Java da ake buƙata kuma kun daidaita masu canjin yanayi.

Fahimtar Laburaren Java da Ayyuka

Laburaren Java da ayyuka suna taka muhimmiyar rawa wajen sauƙaƙe tsarin ci gaba. Babban ɗakin karatu da wadatar ayyuka yana ba masu haɓakawa damar yin takamaiman ayyuka yadda ya kamata da inganci, ba tare da buƙatar rubuta lambar daga karce ba.

Binciko Standard Library na Java

Ma'auni na ɗakin karatu na Java, wanda kuma aka sani da Java API (Application Programming Interface), ya ƙunshi yawancin azuzuwan da aka riga aka gina da kuma hanyoyin da ke da amfani ga ayyuka daban-daban na shirye-shirye. An tsara su cikin fakiti, waɗanda ke taimakawa rarraba azuzuwan da ke da alaƙa da musaya zuwa sararin suna ɗaya.

Wasu fakitin da aka saba amfani da su sun haɗa da:

• java.lang: Wannan fakitin yana ba da mahimman azuzuwan da musaya masu mahimmanci don yaren shirye-shiryen Java. Ya haɗa da azuzuwan kamar Abu, String, Math, da System.
• java.util: Wannan fakitin yana ba da tarin azuzuwan kayan aiki, gami da tsarin bayanai (ArrayList, HashMap, da sauransu), abubuwan amfani na kwanan wata da lokaci, da tsara lambar bazuwar.
• java.io: Wannan fakitin ya ƙunshi azuzuwan da ake buƙata don ayyukan shigarwa-fitarwa, kamar karantawa da rubutu zuwa fayiloli, na'ura wasan bidiyo, da sauran rafukan bayanai.
• java.net: Wannan kunshin yana ba da azuzuwan don shirye-shiryen cibiyar sadarwa, kamar aiwatar da soket ɗin TCP/IP da aiki tare da URLs.

A ƙarshe, ci gaban Java akan dandamali na Linux yana buƙatar cikakken sani game da tsarin shigarwa, daidaita yanayin canjin yanayi, da fahimtar ɗakunan karatu da ayyuka na Java. Tare da JDK da ya dace da kuma saita sauye-sauyen yanayi yadda ya kamata, masu haɓakawa na iya amfani da cikakken damar APIs na Java don ƙirƙirar aikace-aikace masu ƙarfi da inganci.