How to Setup JDK (Java Development Kit) on Windows XP \ Vista \ 7 \ 8 \ 8.1

1) Download JDK (Java Development Kit)
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2) Click "Accept License Agreement" then choose a preferred JDK based on your Operating System. If you are using Windows, check whether your system type is 32-bit or 64-bit.

     * If you didn't know how to check system type before, follow my instructions. Otherwise, ignore this stuff.

       
       Easiest method (but not the best) :

        2.1) Open command prompt. (Win + R > Type "dxdiag" then Enter)

        2.2) Once it is done, it will show you its System Information including system type. In this case, my system type is 64-bit.

3) You can now download which version of Windows that is fit for your operating system. In my case, I downloaded Windows x64 installer since the system type is 64-bit.

NOTE : 32-bit system can only run 32-bit programs ; 64-bit system can run both (32-bit and 64-bit) programs.

4) Install the downloaded file. It will only take a little of your precious time.

5) Find the directory folder of your installed JDK program.
          
     5.1) Open your Local Drive (default is C:) > "Java" > "jdk1.x.x" folder (In my case, my JDK version is 1.8.0_05 ; "jdk1.8.0_05" folder) > "bin" folder.
     5.2) Copy the directory path.

6) For Windows Vista / 7 / 8 Users :

          6.1) Open your Control Panel > System and Security > System > Advanced System Settings (Upper Left) > Environment Variables.

          6.2) Under Environment Variables, find and edit "Path".

          6.3) Paste the directory path (where the JDK folder is located) at the end, after semicolon (If you didn't find a semicolon, just create a new one) > Hit OK and close.


7) Check the JDK if it was installed successfully.

   
     7.1) Open command prompt. (Win + R > Type "cmd")
   
     7.2) Under command prompt, type "java -version" or "javac -version".

     7.3) This command tells you what is the current version you are using. If this shows up on your command prompt, CONGRATULATIONS! Otherwise, go back to Step 5.




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