Cannot find a J2SE SDK installed ( Sql Devloper)

Steps to add path in Windows 7 64bit is as follows:

1. Right click on My computer, then click on properties.
2. On left pane click on "Advanced system settings".
3. Click on "Advanced>Envionment Variables"
4. In system variables box under Variable column look for text "Path".
5. Select that row and click on Edit. 
6. In "Variable Value" text box append the path of java installation seperated by other path with ";" in my case I appened it with ";C:\Program Files\Java\jdk1.7.0\bin"
7. Then just click on ok and then run the application which is giving you this error.