You are Welcome! The Tutorial Shows You Step-by-Step How to Install Oracle-Sun Java JDK 7 SE Release for Linux RedHat RHEL 6.4 KDE4 i686 Desktop.
After Installing you will need to Use the update-alternatives Tool to Update your System Java to Sun SE JDK 7.
To the Post Bottom you Find Link to Installing the Tomcat7 Java Web-Server for RHEL Distro.
The Screenshots of Installation Correspond to the Install on a Red Hat RHEL Linux 6 KDE Desktop but the Procedure on Gnome, XFCE… Should be Near Identical.
Following the Easiest and Practicable Way I have Expressly Excluded the Use of Terminal Commands here.
So Take the Time of Carefully Reading and Executing the Instructions Contained Here and All should Work Like a Breeze :)
Download Latest Oracle Java SE JDK 7:Oracle JDK Linux i586.rpm
Select the Open with Package Installer Option
We Suppose that you Browser like Firefox will Prompt you About the Downloading Procedure to Follow like Here.
When the Download is Achieved you will be Automatically Prompted for Installing
After all the Dependencies are Fulfilled Java is Ready to Be Installed
Follow to Confirm and Authorize Also if you Are Warned About Installation of Unsigned Content…
To Update or Switch the System Java to Sun Java SE JDK
update-alternatives --config java
And for the Java Compiler instead:
sudo update-alternatives --config javac
Just Select the Installed JDK Item Number.
Getting-Started with Java Development:Getting-Started Quickly with JDK
How to Install Apache Tomcat7 Server on Linux RHEL: