How to install JDK (Java Development Kit).

1. First you have to download JDK from net.
2. pen the downloaded file when download complete it shows you as in fig. its JDK 1.7 update 3 version for 64 bit windows. You may download it as you want if you have 32 bit windows.
   
3. Open this application file to install it on your PC.
   

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