Install Java on Linux Machine

java-1.7.0-openjdk              - OpenJDK Runtime Environment
java-1.7.0-openjdk-devel    - OpenJDK Development Environment

1) Check list of available java versions

       # sudo yum search java | grep -i --color JDK

2) Use yum command to install OpenJDK:

      # sudo yum install java-1.7.0-openjdk java-1.7.0-openjdk-devel

3) Set JAVA_HOME environment variable using export command:

     # export JAVA_HOME=/usr/lib/jvm/jre-1.7.0-openjdk.x86_64

4) Done