How to uninstall Java completely

Firstly, go to start > Control Panel > Add/ Remove

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Locate any versions of Java as seen in the above screenshot, and click the removal button. Follow the ion screen wizard instructions.

If you are unable to remove Java from the control panel, download and install the Windows Installer Cleanup Utility:
http://support.microsoft.com/kb/290301

Once installed, open the utility locate Java and click remove:

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If after uninstallation, Java is still listed in the add/remove section, follow this guide to un-list it:
http://www.java.com/en/download/help/regkey_addremove.xml

Step 2 - Removing Saved Data

Click Start, Run, and type %appdata% and click ok

Your application folder will open up. Delete the sub folder entitled "Sun" bu right clicking it and choosing to delete it.

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Step 3 - Removing Registry Keys

Download and install ccleaner from here:
http://www.ccleaner.com/download/builds

Once installed, run the programme and perform a scan for the registry.

Scan for issues, and fix anything it finds:

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Download and install EasyCleaner from here:
http://personal.inet.fi/business/toniarts/...ne.htm#download

Perform a scan with the registry. Press find, and wait for the scan to finish. Once finished, click the select all button, and then delete.

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Step 4 - Removing Folders

Now go to your hard-disk (Normally just type C:\ into run and click ok)

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Then open the program folder. (You may be prompted that the files are hidden, simply click "Show the contents of this folder".

Then delete the folder entitled "Java".

Then, go to hard-disk again, then access the folder entitled "Windows". Then click "Downloaded Program Files". (DO NOT DELETE THIS FOLDER)

Remove all instances of java (that are INSIDE the folder):

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Also, in your hard disk folder, in the Windows folder, delete any folder labeled:
Sun

Also, in your hard disk folder, in the Windows folder, delete any folder labeled:
.jagex_cache_32

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Just a RECAP
Folders to delete:
C:\Windows\Sun
C:\Windows\.jagex_cache_32
C:\Program Files\Java

Step 5 - Finishing touches

Now just restart your computer. If you need to reinstall java, click the link below:
http://www.java.com/en/download/manual.jsp

By Djpailo