Can not find or load the main class , why?

Question

I have Git repository on Github. I clone it using EGit plugin inside Eclipse Mars.

In the package explorer, I imported the existing git local repository into a general eclipse project.

I then converted the default project to Java type using this answer : https://stackoverflow.com/a/13750958/813853

I set the /src/ folder as Source folder.

When I run as Java Application I get the following error :

Error: Can not find or load the main class Editor

I don't know from where comes the error ?

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And how do you run your application? Is the ["run configuration"](http://www.tutorialspoint.com/eclipse/eclipse_run_configuration.htm) correct? — Tom, Jun 30 '15 at 16:49
CTRL+F11 , I don't know how to check if my run configuration is correct, but everything seems legit :s @Tom — , Jun 30 '15 at 16:53
sometime I right-click on the project and choose Run and then Run as aJava Application @DraganBozanovic — , Jun 30 '15 at 16:54
@OSryx *"but everything seems legit"* So your program works now? :P *"I don't know how to check if my run configuration"* Then read the link I've posted, it might help you. — Tom, Jun 30 '15 at 16:59
no @Tom nothing works ! I am reading your link , I deleted the configuration and start a new run as ... nothing changed — , Jun 30 '15 at 17:02
I have no .class generated ! be careful I updated my question — , Jun 30 '15 at 17:11
on *Project -> Build automatically* is activated. @DraganBozanovic — , Jun 30 '15 at 17:20
I downloaded your code from Github and when I right click on the Editor.java file from the project explorer, and run as java application, everything works. — swingMan, Jun 30 '15 at 17:32
@swingMan did you follow the steps I have done ? or did you proceed in different way ?, — , Jun 30 '15 at 17:34
I didn't do the project conversion like you did. I just created a new Java project in Eclipse and created two new classes with your code. — swingMan, Jun 30 '15 at 17:47
I see ... @swingMan if you know another way to import GIT into Java Project. that will be an alternative solution — , Jun 30 '15 at 17:50

score 1 · Accepted Answer · edited May 23 '17 at 12:10

1

The problem was in BuildSpec : I have to do it like this :

enter image description here

I had to modify .classpath and .project correctly as described in this answer.

edited May 23 '17 at 12:10

Community

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answered Jun 30 '15 at 18:20

score 1 · Answer 2 · answered Jun 30 '15 at 18:23

Well, editing the .project and .classpath files is not at all recommended. In your case, you added the java nature but the java builder is not configured and so is not building your project. Instead of importing into a general project and converting it into a java project, you could have created a java project and imported your stuff into it. Just right click the project, choose Import-> File system and choose the src folder in the dialog

Can not find or load the main class , why?

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2 Answers2