JAVA Installation in RHEL 7.6

Resolution

First go into the server and check for JAVA is installed or not

java -version

rpm -qa | grep java

Then after if JAVA is not installed then install JAVA first

sudo yum search java 1.8

sudo yum install -y java-1.8.0-openjdk-devel

sudo find / -name jvm

cd /usr/lib/jvm

ls

cd java-1.8.0-openjdk-1.8.0.222.b10-0.el7_6.x86_64

pwd

Please change vi ~/.bashrc

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.el7_6.x86_64

export JRE_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre

source ~/.bashrc

echo $JAVA_HOME