CentOS yum installation JDK tutorial, centosyumjdk

CentOS yum installation JDK tutorial, centosyumjdk

How to install JDK in CentOS yum

Guide

JDK is a Java language software development kit. It is mainly used for java applications on mobile devices and embedded devices. JDK is the core of java Development. It includes the JAVA Runtime Environment (JVM + Java System Class Library) and JAVA tools.

1. view the jdk version currently supported on the cloud

[root@localhost ~]# yum search java|grep jdkldapjdk-javadoc.noarch : Javadoc for ldapjdkjava-1.6.0-openjdk.x86_64 : OpenJDK Runtime Environmentjava-1.6.0-openjdk-demo.x86_64 : OpenJDK Demosjava-1.6.0-openjdk-devel.x86_64 : OpenJDK Development Environmentjava-1.6.0-openjdk-javadoc.x86_64 : OpenJDK API Documentationjava-1.6.0-openjdk-src.x86_64 : OpenJDK Source Bundlejava-1.7.0-openjdk.x86_64 : OpenJDK Runtime Environmentjava-1.7.0-openjdk-accessibility.x86_64 : OpenJDK accessibility connectorjava-1.7.0-openjdk-demo.x86_64 : OpenJDK Demosjava-1.7.0-openjdk-devel.x86_64 : OpenJDK Development Environmentjava-1.7.0-openjdk-headless.x86_64 : The OpenJDK runtime environment withoutjava-1.7.0-openjdk-javadoc.noarch : OpenJDK API Documentationjava-1.7.0-openjdk-src.x86_64 : OpenJDK Source Bundlejava-1.8.0-openjdk.i686 : OpenJDK Runtime Environmentjava-1.8.0-openjdk.x86_64 : OpenJDK Runtime Environmentjava-1.8.0-openjdk-accessibility.i686 : OpenJDK accessibility connectorjava-1.8.0-openjdk-accessibility.x86_64 : OpenJDK accessibility connectorjava-1.8.0-openjdk-accessibility-debug.i686 : OpenJDK accessibility connectorjava-1.8.0-openjdk-accessibility-debug.x86_64 : OpenJDK accessibility connectorjava-1.8.0-openjdk-debug.i686 : OpenJDK Runtime Environment with full debug onjava-1.8.0-openjdk-debug.x86_64 : OpenJDK Runtime Environment with full debug onjava-1.8.0-openjdk-demo.i686 : OpenJDK Demosjava-1.8.0-openjdk-demo.x86_64 : OpenJDK Demosjava-1.8.0-openjdk-demo-debug.i686 : OpenJDK Demos with full debug onjava-1.8.0-openjdk-demo-debug.x86_64 : OpenJDK Demos with full debug onjava-1.8.0-openjdk-devel.i686 : OpenJDK Development Environmentjava-1.8.0-openjdk-devel.x86_64 : OpenJDK Development Environmentjava-1.8.0-openjdk-devel-debug.i686 : OpenJDK Development Environment with fulljava-1.8.0-openjdk-devel-debug.x86_64 : OpenJDK Development Environment withjava-1.8.0-openjdk-headless.i686 : OpenJDK Runtime Environmentjava-1.8.0-openjdk-headless.x86_64 : OpenJDK Runtime Environmentjava-1.8.0-openjdk-headless-debug.i686 : OpenJDK Runtime Environment with fulljava-1.8.0-openjdk-headless-debug.x86_64 : OpenJDK Runtime Environment with fulljava-1.8.0-openjdk-javadoc.noarch : OpenJDK API Documentationjava-1.8.0-openjdk-javadoc-debug.noarch : OpenJDK API Documentation for packagesjava-1.8.0-openjdk-javadoc-zip.noarch : OpenJDK API Documentation compressed injava-1.8.0-openjdk-javadoc-zip-debug.noarch : OpenJDK API Documentationjava-1.8.0-openjdk-src.i686 : OpenJDK Source Bundlejava-1.8.0-openjdk-src.x86_64 : OpenJDK Source Bundlejava-1.8.0-openjdk-src-debug.i686 : OpenJDK Source Bundle for packages withjava-1.8.0-openjdk-src-debug.x86_64 : OpenJDK Source Bundle for packages withldapjdk.noarch : The Mozilla LDAP Java SDK

2. Select a version and install it. (If you run the following command, jdk dependencies are automatically installed.

[Root @ localhost ~] # Yum install-y java-1.8.0-openjdk loaded plug-in: fastestmirrorLoading mirror speeds from cached hostfile * base: mirrors.zju.edu.cn * extras: FIG * updates: mirrors.aliyun.com is working on dependencies --> checking transactions --> the package java-1.8.0-openjdk.x86_64.1.1.8.0.151-5.b12.el7_4 will be installed --> processing dependency java-1.8.0-openjdk-headless (x86-64) =. 8.0.151-5. b12.el7 _ 4, which is required by the Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> is processing dependency xorg-x11-fonts-Type1, which is required by the Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> is processing dependency libpng15.so. 15 (PNG15_0) (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> is processing dependency libjvm. so (SUNWprivate_1.1) (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libjpeg. so.62 (lib1__6.2) (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libjli. so (SUNWprivate_1.1) (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libjava. so (SUNWprivate_1.1) (64bit), which is required by the Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> is processing the dependency fontconfig (x86-64), which is the Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 needs --> processing dependency libpng15.so. 15 () (64bit), which is required by the Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependency libjvm. so () (64bit), which is required by the Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libjpeg. so.62 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependency libjli. so () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> is processing dependency libjava. so () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> is processing dependency libgif. so.4 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependency libawt. so () (64bit), which is required by the Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libXtst. so.6 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependency libXrender. so.1 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependency libXi. so.6 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependency libXext. so.6 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libXcomposite. so.1 () (64bit), which is required by Software Package 1: java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 --> processing dependencies libX11.so. 6 () (64bit), which is included in Package 1: The java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 needs ......

3. Check whether the installation is successful.

[root@localhost ~]# java -versionopenjdk version "1.8.0_151"OpenJDK Runtime Environment (build 1.8.0_151-b12)OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode)

4. Search for the java file and find the default jdk installation directory.

[root@localhost ~]# find / -name 'java'/etc/pki/ca-trust/extracted/java/etc/pki/java/etc/java/etc/alternatives/java/var/lib/alternatives/java/usr/bin/java/usr/lib/java/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64/jre/bin/java/usr/share/java

Tip: Install jdk online using the yum command, which is simple and convenient. You can use java services without configuring environment variables.