How To Install & Configure Java JDK On Your Computer?

How to enable your computer for java programming?

First,download Java Development Kit(JDK) form one of the following addresses-

http://www.oracle.com/technetwork/java/javase/downloads/index.html

http://download.cnet.com/Java-Development-Kit-32-bit/3000-2218_4-12091.html

http://download.cnet.com/Java-Development-Kit-64-Bit/3000-2218_4-75317068.html

http://java-development-kit-jdk.en.softonic.com/

Double click the downloaded file(in our example,it should be named as  jdk-7u6-windows-i586.exe) and follow the installation process,there will be two installations,one for the JDK, another is JRE(Java Runtime Environment).

After the installation,go to Command Prompt by pressing Windows Key+R. Type java -version and hit enter,it'll show interpreter's version. Then type javac -version and hit enter. If the javac command completed successfully then you don't have to follow the steps below. But,if you get an error like this-  'javac' is not recognized as an internal or external command,operable program or batch file ,then do the following-

Go to Start -> Control Panel -> System -> Advanced System Settings -> Environment Variables, select the system varable named "Path" and click the Edit button. Add the address of java's bin sub-directory at the end of the list in the Variable Value field(in our example C:\Program Files\Java\jdk1.7.0_06\bin) then click the ok button.

To test the environment open command prompt by pressing Windows Key+R.

Type java -version and hit enter to see interpreter's version number.

And type javac -version and hit enter to see compiler's version number.

Both the versions should match. If it matches,you're ready to do java programming!

Note: Other than java programming,if you install the jdk,you'll be able to run java-archives(i.e .jar files) on your computer! There are plenty of java applets(small applications) are available on the internet for free! Also java is needed for surfing various internet sites.

That's all!

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