title: Why "Error: Could not find or load main class addstudent.AddStudent" is showing
body: <p>I am developing a project using NetBeans IDE. I am new to javafx. I created a class "AddStudent" in a package named "addstudent". When I ran the class, I got "Error: Could not find or load main class addstudent.AddStudent". Why this error is showing ? How can it solved ?</p>