After you have downloaded and installed the Java Development Kit (JDK) in Windows, you must set the JAVA_HOME environment variable to point to the JDK installation directory.
You must follow these steps to set JAVA_HOME variable on your Windows system.
Right-click the My Computer icon on your desktop and select Properties.
Click Advanced system settings link.
Click the Advanced tab.
Click the Environment Variables button.
Under System Variables, click New.
Enter the variable name as JAVA_HOME
Enter the variable value as the installation path for the Java Development Kit as something like this C:\Program Files\Java\jdk1.6.0_45
Click OK.
Click OK.
Under System Variables, select Path system variable
Click Edit.
Scroll to the beginning of the Variable value and insert %JAVA_HOME%\bin;
Click OK.
Click OK.
Click Apply.
If the changes do not take effect restart Windows.
Resource:
https://confluence.atlassian.com/display/DOC/Setting+the+JAVA_HOME+Variable+in+Windows
http://docs.oracle.com/cd/E19182-01/820-7851/inst_cli_jdk_javahome_t/index.html
http://www.codeproject.com/Questions/374044/How-to-set-JAVA_HOME-variable-in-windows7-64-bit
Kaan Mutlu's Blog 
thank you very much, it helped me a lot
Good Blog helped a lot.
it helped.
how to set for client location in java 64 bit bcz there is no client folder in java6 64 bit, as have in 32 bit
Thanks alot…it did work successfully 🙂
good
thanks
Thank you very much
Yine çok iyi bir paylaşım olmuş teşekkürler
Thank You 🙂
Thank you…this helped me.
Great article. It’s amazing, but even though this was published in 2013, it all still pretty much holds true for Windows 10.
For anyone looking at fixing errors that might happen during this process, I put together a little article on the topic. It just might help if you’re having problems:
https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/How-to-fix-common-JAVA_HOME-errors-quickly