CentOS8 installation tutorial of jdk8 / java8 (recommended)

Preface

At first, I wanted to use wget to download it on CentOS8, then decompress it and configure the environment variables. However, I failed to do it after a long time, so I gave up and installed it directly using yum.

1. Installation method

Use yum to install directly on CentOS8, and the environment variables are automatically configured

2. Check whether it has been installed

Seeing the following results, it means that jdk has been installed and configured

[root@localhost ~]# java -version
openjdk version "1.8.0_222"
OpenJDK Runtime Environment (build 1.8.0_222-b10)
OpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode)

3. Uninstall

Check whether the system comes with JDK

rpm -qa |grep java
rpm -qa |grep jdk
rpm -qa |grep gcj

If there is output information, batch uninstall system comes with

rpm -qa | grep java | xargs rpm -e --nodeps

If you installed JDK using yum, use the following command to uninstall

yum -y remove java-1.8.0-openjdk-headless.x86_64

4. Installation

4.1 Check if there is java1.8 package in yum

yum list java-1.8*

4.2 Start the installation

yum install java-1.8.0-openjdk* -y

5. Verification

[root@localhost ~]# java -version
openjdk version "1.8.0_222"
OpenJDK Runtime Environment (build 1.8.0_222-b10)
OpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode)

Summarize

The above is the tutorial on how to install jdk8 / java8 on CentOS8 introduced by the editor. I hope it will be helpful to everyone. If you have any questions, please leave me a message and the editor will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!
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