1 Download Java....

• You need to download Java
• Goto the following link  http://www.oracle.com/technetwork/java/javase/downloads/index.html

• Click on the normal JAVA icon  (JDK)7u45. You can see more  latest versions.

• You may see something like this inside the window:-

• After clicking it, just accept the license agreement. (If you have some free time, read the agreement). Just below it, you will get a list of operating systems, so select your operating system and download the software.