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Install latest Java and set Environment

openJdk on CentOS 7 Distribution

1) Run below command to install java-8-openjdk-devel package.

 

sudo yum install java-1.8.0-openjdk-devel

 

2) Verify the installation by checking the java version.

 

 $ java -version
  openjdk version "1.8.0_232"
  OpenJDK Runtime Environment (build 1.8.0_232-b09)
  OpenJDK 64-Bit Server VM (build 25.232-b09, mixed mode)

 

3) Setup Java Home and Path for all Unix users

add a new script with any name to /etc/profile.d.

for example create file with name : jdk_home.sh and add below contents to it.

 

export JAVA_HOME=$(readlink -f /usr/bin/java | sed "s:/bin/java::")

 

or below to do it in one single step.

 

echo export JAVA_HOME='$(readlink -f /usr/bin/java | sed "s:/bin/java::")' | sudo tee /etc/profile.d/jdk_home.sh > /dev/null

If you do not want to restart, you can run below command to run all the profile.d scripts.

 

                 source /etc/source

 

Note: In case if you want to set jdk as the Home , then add below instead of jre.

 

export JAVA_HOME=$(readlink -f /usr/bin/javac | sed "s:/bin/javac::")

Written by Ramesh Metta


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