Install the enhanced tool on centos 6.5 virtual box

Centos 6.5 install the enhanced tool on virtual box: 
Appears:
Centos unable to find the source of your current Linux Kernel

Is it too late to contribute to this thread? I found that gcc and kernel-devel was not included with the generic desktop install so also needed to do

Usage:

yum install -y gcc kernel-devel

If the problem persists, run the following command:

    yum update 

Update the software package,Then restart the instance to perform the operation..
After running the updates and rebooting. After the installation is complete, run the reboot command to restart.

The installed centos comes with openjdk and uses the Java-version command. The following information is displayed:

Java version "1.6.0"
Openjdk Runtime Environment (build 1.6.0-b09)
Openjdk 64-bit server VM (build 1.6.0-b09, mixed mode)

It is best to uninstall openjdk first and install the JDK of sun.

Check rpm-Qa | grep Java first

The following information is displayed:

Java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
Java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5

Uninstall:

Rpm-e -- nodeps java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
Rpm-e -- nodeps java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5

Install the enhanced tool on centos 6.5 virtual box