Netbeans - Error: Could not find or load main class

Question

So I\'m making a java application in Neatbeans 7.4, been working at it for a while, everything was fine, running the project worked fine, but now when I hit run project, I g

Answer 1

If none of the above works (Setting Main class, Clean and Build, deleting the cache) and you have a Maven project, try:

mvn clean install

on the command line.

Answer 2

I have run into this error a couple of times as well and for me the above solutions did not work. What does seem to work is going to the Project Properties, and under Compiling toggling Compile on Save.

Answer 3

1. close netbeans.
2. open netbeans again.
3. choose new project>>java application.
4. click next.
5. deselect create main class.
6. now make the application clean build run

For more reference watch this video

Answer 4

Using NetBeans 8.1, I got the dread

Error: Could not find or load main class 

from carelessly leaving an empty line in the Project Properties > Run > VM Options field. Until you click in the field, you may not see the caret flashing out of place. Remove the empty line to restore equanimity.

Answer 5

I had the same problem and I moved the project to a location where the path had no none-english letter and that fixed the problem

Answer 6

Try to rename the package name and the class/jframe names... The clean and build the application.

1. Right Click on the package name
2. Go to Refactor
3. Select Rename
4. Give it a meaningful name, preferably all in small letters

5. Click on Refactor

   Do the same for the class/jframe names.

6. Last Select Run from Menu 7.Select Clean and build main project

That should do it!!! All best