Bii o ṣe le Fi Java 14 sori ẹrọ lori CentOS/RHEL 7/8 & Fedora
Java jẹ aabo, iduroṣinṣin, ati olokiki daradara, ede siseto eto idi-gbogbogbo ati pẹpẹ imọ-ẹrọ iširo pẹlu ọpọlọpọ awọn agbara isopọ.
Lati ṣiṣe awọn ohun elo ti o da lori Java, o gbọdọ fi Java sori ẹrọ olupin rẹ. O nilo julọ Ayika asiko asiko Java (JRE), ikojọpọ awọn ohun elo sọfitiwia ti a lo lati ṣiṣẹ awọn ohun elo Java lori ẹrọ Linux.
Ti o ba fẹ ṣe idagbasoke awọn ohun elo sọfitiwia fun Java, o nilo lati fi sori ẹrọ Oracle Java Development Kit (JDK), eyiti o wa pẹlu package JRE pipe pẹlu awọn irinṣẹ fun idagbasoke, n ṣatunṣe aṣiṣe, ati mimojuto awọn ohun elo Java ati pe o jẹ Java ti o ni atilẹyin ti Oracle ( Standard Edition) ẹya.
Akiyesi: Ti o ba n wa orisun-ṣiṣi ati ẹya JDK ọfẹ, fi sii OpenJDK eyiti o pese awọn ẹya kanna ati iṣẹ bi Oracle JDK labẹ iwe-aṣẹ GPL.
Ni akoko kikọ nkan yii, OpenJDK 11 jẹ ẹya LTS lọwọlọwọ Java lati fi sori ẹrọ ni lilo pipaṣẹ atẹle lati awọn ibi ipamọ aiyipada:
# yum install java-11-openjdk-devel # java -version
openjdk 11.0.8 2020-07-14 LTS OpenJDK Runtime Environment 18.9 (build 11.0.8+10-LTS) OpenJDK 64-Bit Server VM 18.9 (build 11.0.8+10-LTS, mixed mode, sharing)
Ninu nkan yii, a yoo fi ọ han bi o ṣe le fi sori ẹrọ Oracle OpenJDK 14 ni RHEL 8/7/6, CentOS 8/7/6, ati Fedora 30-32 lati dagbasoke ati ṣiṣe awọn ohun elo Java.
Fifi Oracle OpenJDK 14 ni CentOS/RHEL ati Fedora sii
Lati fi Oracle OpenJDK 14 sori ẹrọ, o nilo lati gba lati ayelujara OpenJDK 14 ti o ṣetan-iṣelọpọ lati aṣẹ wget lati gba lati ayelujara ati fi sii bi o ti han.
# wget --no-check-certificate -c --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/14.0.2+12/205943a0976c4ed48cb16f1043c5c647/jdk-14.0.2_linux-x64_bin.rpm
Fi package sii nipa lilo pipaṣẹ atẹle:
# yum localinstall jdk-14.0.2_linux-x64_bin.rpm
Ti o ba ni ẹya Java ju ọkan lọ ti a fi sori ẹrọ lori eto, o nilo lati ṣeto ẹya aiyipada nipa lilo pipaṣẹ awọn omiiran bi o ti han.
# alternatives --config java
There are 2 programs which provide 'java'.
Selection Command
-----------------------------------------------
+ 1 java-11-openjdk.x86_64 (/usr/lib/jvm/java-11-openjdk-11.0.8.10-0.el8_2.x86_64/bin/java)
* 2 /usr/java/jdk-14.0.2/bin/java
Enter to keep the current selection[+], or type selection number: 2
O kan, tẹ nọmba sii lati ṣeto ẹya Java aiyipada lori eto naa.
Lakotan, ṣayẹwo ẹya Java.
# java -version
java version "14.0.2" 2020-07-14 Java(TM) SE Runtime Environment (build 14.0.2+12-46) Java HotSpot(TM) 64-Bit Server VM (build 14.0.2+12-46, mixed mode, sharing)
Oriire! O ti ṣaṣeyọri ti fi sori ẹrọ ẹya tuntun ti Oracle OpenJDK 14 ni RHEL 8/7/6, CentOS 8/7/6, ati Fedora 30-32 lati dagbasoke ati ṣiṣe awọn ohun elo Java.