How to Set phpmyadmin Password on XAMPP Server?

Some developers are test their application or softwares on localhost using XAMPP server. but most of application needs database application username and password. for example some CMS needs database username and password. but XAMPP or WAMP server Phpmyadmin application has login with null password. so we are not able to install that CMS application on localhost. So first we need to set phpmyadmin password. This Guide show you How to set Phpmyadmin password on WAMP / XAMPP Server.