Installing Java
1. Update
yum -y update
2. Install Java 8
yum install java-1.8.0-openjdk
3. Verify Java is installed
java -version
Set Java’s Home Environtment
1. Find Java’s Path
update-alternatives –config java
2. Set Java’s Path in Your Environment
2.a Open .bash_profile with vi editor
vi .bash_profile
2.b. Enter following line in that file :
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el8_2.x86_64/jre/bin/java
2.c. Refresh file
source .bash_profile
2.d. Check JAVA_HOME
echo $JAVA_HOME