Installing JAVA(JDK) from rpm file in linux

1. Become root by running su and entering the super-user password.
2. Change to the directory in which you want to install. Type:
   cd <directory path name>
   For example, to install the software in the /usr/java/ directory, Type:
   cd /usr/java
   
   
3. Uninstall any earlier installations of the Java packages. rpm -e <package_name>
4. Install the package.
   rpm -ivh jre-7u7-linux-x64.rpm
   
   To upgrade a package:
   rpm -Uvh jre-7u7-linux-x64.rpm
   
   
5. Delete the .rpm file if you want to save disk space.
6. Exit the root shell. No need to reboot.
   
   
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