This is the proper way to install java in rhel/centos

proper-way-to-install-java-in-rhel

# installation via rpm

jdk-8u60-linux-x64.rpm

rpm -Uvh jdk-8u60-linux-x64.rpm

alternatives --config java
alternatives --config javaws
alternatives --config libjavaplugin.so
alternatives --config libjavaplugin.so.x86_64
alternatives --config javac

# Post-Installation Setup

# Add JAVA_HOME environment variable to /etc/profile file or $HOME/.bash_profile

# Java JDK and JRE latest version (/usr/java/latest)

# You can make a symbolic link from your Java JDK to that directory, so it makes it easier to handle several versions of java

# export JAVA_HOME JDK/JRE

export JAVA_HOME="/usr/java/latest"

# e.g. echo 'export JAVA_HOME="/usr/java/latest"' >> /etc/profile

# Java JDK and JRE absolute version (/usr/java/jdk-8u60) or other version

# export JAVA_HOME JDK 

export JAVA_HOME="/usr/java/jdk-8u60" 

# export JAVA_HOME JRE #  

export JAVA_HOME="/usr/java/jdk-8u60"