[news.eclipse.tools] Re: Different JREs for different Java projects

["Darin Swanson" <Darin_Swanson@xxxxxxxxxx>]

Eclipse is using an internal compiler.

The preferences for the compiler (including compliance and dealing with
'assert') can all be set via Window->Preferences->Java->Compiler.
You can set it to do all sorts of weird and wonderful things independent of
the libraries you are compiling against.

Along the lines of the "target" attribute for the Ant javac task

HTH
Darins

"Daniel E. Stolz" <dan.stolz@xxxxxxxxxxxxxxxx> wrote in message
news:b2ecmd$ioc$1@xxxxxxxxxxxxxxxx
> This would compile against the correct library, but would be using the
wrong
> compiler.  Unless Eclipse is using an internal compiler regardless.  I
don't
> consider myself even close to an expert on java compilation, so I don't
even
> know if this would matter.
>
> Out of curiosity, (because I'm not actually using it), how would that
affect
> something like the 'assert' keyword?  I'm guessing if I set the default
JDK
> to 1.3, it should throw an error (unfortunately) in my 1.4 code.  If I set
> the default to JDK 1.4, use of assert in my 1.3 code wouldn't throw a
> warning.
>
> I tried what you suggested and it worked, as I assumed it would before
> trying.  This should work out well for me because I build for deployment
> outside of Eclipse using Ant so any weird compiler issues would be
detected
> then anyway.
>
> Thanks for the help and getting back to me much more quickly than I got
back
> to you. :)
>
> "Darin Swanson" <darins@xxxxxxxxxx> wrote in message
> news:b1p3dc$3cd$1@xxxxxxxxxxxxxxxx
> > Use the context menu for the project to bring up the project properties
> > On the Libraries path, remove the existing JRE lib
> > Click Add Library
> > Select JRE system Library
> > Select (and / or ) add as required
> >
> > HTH
> > Darins
> >
> > "Daniel E. Stolz" <dan.stolz@xxxxxxxxxxxxxxxx> wrote in message
> > news:b1p2ed$2go$1@xxxxxxxxxxxxxxxx
> > > I would like to use different JREs for different Java projects that I
> > have.
> > >
> > > In particular, I have two versions of a project, on that compiles with
> JDK
> > > 1.3 and one that compiles with JDK 1.4.
> > >
> > > I know that I can specify a particular JRE for launching each project.
> I
> > > also know how to specify the default JRE that gets used when
compiling.
> > > (Windows|Preferences).
> > >
> > > However, neither of these allows me to specify a specific java
compiler
> > > version for each project.
> > >
> > >
> >
> >
>
>