[news.eclipse.newcomer] Re: Delete HelloWorld.class file, won't run agai

[Diviner <divinerchan@xxxxxxxxx>]

Eric Rizzo,

I don't know do compile/re-compile in a separate operation. I do
it in Run->Run from context menu of Project in Package Explorer
or Run->Run Application then select particular project.

--
Best regards,
Diviner.

> Diviner wrote:
>
> > Hi all,
> >
> > I tried to write a simple console application "HelloWorld" and
> > work well in a development cycle. Then I tried to delete the
> > HelloWorld.class to let Eclipse make it for me again, but
> > always failed. It gave me the error:
> >    java.lang.NoClassDefFoundError: HelloWorld
> >    Exception in thread "main"
> >    (with a dialog -- "Could not find the main class. Program will exit")
>
>
> After you deleted the .class file, how did you tell Eclipse to 
> re-compile it for you? In a standard configuration, Eclipse will 
> re-build the project (re-compile all Java source files) when you make a 
> change to the source and save it, or if you select Project > Clean from 
> the menu.
>
> HTH,
>     Eric