Configure Java RTE in CentOS

2020-06-16 15:02:00
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Summary : Two ways to configure Java runtime environment in CentOS.

Two ways to configure Java runtime environment in CentOS.


Update the software package 

Make sure the server software package is updated.


sudo yum update -y

Method 1

Install OpenJRE.


sudo yum install java-1.8.0-openjdk -y
Check whether it is installed.


java -version

Method 2


Download JDK from Oracle website, and unzip it to   /usr/local/java/jdk1.8.0_241. You need to sign up to download, and it is free.


Open the file.


vim /etc/profile
Add the code below to the end of the file.


export JAVA_HOME=/usr/local/java/jdk1.8.0_241
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
Make it work.


source /etc/profile
Add a soft link.


ln -s ${JAVA_HOME}/bin/java /usr/bin/java
Check whether it is installed.


java -version
                    
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