Why “Error: Could not find or load main class addstudent.AddStudent” is showing

Question

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

Answer 1

I'm running your code and it works fine. What I did

1. Created New -> JavaFx Main Class -> AdStudent -> Copy/Pasted your code

2. Right click on Project -> Properties -> Run -> Browse Application Class -> Select class addstudent.AddStudent

3. Clean and Build

4. Run Project

I have a feeling the first 2 are fine for you. You may just need to Clean and Build.