Windows 8
Use search to find the Control Panel
Press Windows logo key + W to open the Search charm to search settings
OR
Drag the Mouse pointer to the bottom-right corner of the screen, then click on the Search icon.
In the search box enter Java Control Panel
Click on Java icon to open the Java Control Panel.
Java is found in the browser. Open IE and look in the top right corner for a gear icon.
From the drop down select manage add ons. You'll find it on the list.
According to the latest Java 7 update,windows officially declared and continues its support with windows 8 and other operating systems.But it will supports only in desktop screen.There won't be any custom software available for Java to run in start screen.Java icon is available in the control panel of windows 8.Please follow these steps to install Java in your system and it help you run JRE in your system.More details are available in the website of Java regarding the troubleshoot of windows 8 with java.
1. goto java.com/en/download/manual.jsp
2. Download and Install Windows Offline (32-bit)
3. Download and Install Windows Offline (64-bit)
4. After installing Java, restart your browser
5. goto java.com/en/download/installed.jsp to Verify Java Version has been installed correctly