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Main class not found [message #1799203]

Sat, 01 December 2018 19:58

Sinem Süzoglu

Messages: 1
Registered: December 2018

Junior Member

Hi, I have a problem with my class file.
When I run it I get the error message:
"Could not find or load main class".

Contents of the class file:

public class test {

public static void main(String[] args) {
// TODO Auto-generated method stub
}

}

Thanks in advance.

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Re: Main class not found [message #1799209 is a reply to message #1799203]

Sun, 02 December 2018 10:24

Tauno Voipio

Messages: 743
Registered: August 2014

Senior Member

There is no code to run in your main() method.

--

Tauno Voipio

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Re: Main class not found [message #1800509 is a reply to message #1799209]

Mon, 31 December 2018 08:47

john 0804

Messages: 3
Registered: December 2018

Junior Member

You need to make sure that the class name saved as test.java Also, you need to have some code inside main() method. For example you can use System.out.println("eclipse.org"); inside the main method.

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Re: Main class not found [message #1824411 is a reply to message #1800509]

Wed, 15 April 2020 04:01

Zhouping Wei

Messages: 2
Registered: April 2020

Junior Member

May I know if I could use a name for main class different from the name of the file saving this class? For example:

class GFG
{
public static void main(String[] args) {
// TODO Auto-generated method stub
}
}

And save above class definition to a file called "test.java". I know I can do this in command line but I'm not sure if I can do it using Eclipse

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Re: Main class not found [message #1824414 is a reply to message #1824411]

Wed, 15 April 2020 04:31

Nitin Dahyabhai

Messages: 4507
Registered: July 2009

Senior Member

Whether you can or not, it's a bad idea. Classes relate to each other using their type
names, and they're linked at runtime by converting those type names into file paths
relative to the classpath. If you don't match them, you're not going to build anything
more complicated than can fit into a single class.

_
Nitin Dahyabhai
Eclipse Web Tools Platform

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Re: Main class not found [message #1824452 is a reply to message #1824414]

Wed, 15 April 2020 13:42

Zhouping Wei

Messages: 2
Registered: April 2020

Junior Member

Thanks for reply, very helpful! No I would never do that!

Why I was asking is just because I found that I'm allowed to do that using command-line (just remove 'public' from main class definition), but not using Eclipse.

So, may I say Eclipse does not allow to do that but command-line allows? Thanks!

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