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eclipse not running .java file [message #662480]

Wed, 30 March 2011 18:56

dsdsdsdsd

Messages: 7
Registered: March 2011

Junior Member

hello;

I am getting the "the selection cannot be launched error..."

I have Window/Preferences/Launching/LaunchTheSelectedResourceOrActi veEditor checked.

I opened my .java file via File/OpenFile.

my .java file is sitting in a package.

the PackageExplorer is empty ... I thought maybe that eclipse would automatically identify the package/directory that the .java file was sitting in.

the .java file was created in netbeans, but I do not believe that that should matter.

in netbeans it runs without errors.

any thoughts please.

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Re: eclipse not running .java file [message #662497 is a reply to message #662480]

Wed, 30 March 2011 20:17

Ed Merks

Messages: 33217
Registered: July 2009

Senior Member

I think you'll need to have the .java file in a Java project in the
workspace to run it.

dsdsdsdsd wrote:
> hello;
>
> I am getting the "the selection cannot be launched error..."
>
> I have Window/Preferences/Launching/LaunchTheSelectedResourceOrActi
> veEditor checked.
>
> I opened my .java file via File/OpenFile.
>
> my .java file is sitting in a package.
> the PackageExplorer is empty ... I thought maybe that eclipse would
> automatically identify the package/directory that the .java file was
> sitting in.
>
> the .java file was created in netbeans, but I do not believe that that
> should matter.
> in netbeans it runs without errors.
>
> any thoughts please.
>
>

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: eclipse not running .java file [message #662524 is a reply to message #662497]

Wed, 30 March 2011 22:36

dsdsdsdsd

Messages: 7
Registered: March 2011

Junior Member

hmm, that's strange ... seems like .java file would be a .java file, regardless of it's location .... I'll probably do my first eclipse tutorial tomorrow, which will of course shed some light onto the eclipse authoring experience ... thanks.

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Re: eclipse not running .java file [message #662530 is a reply to message #662524]

Wed, 30 March 2011 23:33

Ed Merks

Messages: 33217
Registered: July 2009

Senior Member

Well, you can't run a .java file directly. You have to compile it to a
..class file and run that, along with a JRE. Looking at some
introductory tutorials would be best.

dsdsdsdsd wrote:
> hmm, that's strange ... seems like .java file would be a .java file,
> regardless of it's location .... I'll probably do my first eclipse
> tutorial tomorrow, which will of course shed some light onto the
> eclipse authoring experience ... thanks.

Ed Merks
Professional Support: https://www.macromodeling.com/

Report message to a moderator

Re: eclipse not running .java file [message #662568 is a reply to message #662480]

Thu, 31 March 2011 07:29

dsdsdsdsd

Messages: 7
Registered: March 2011

Junior Member

Ed, thanks.

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