harmony-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Evgueni Brevnov" <evgueni.brev...@gmail.com>
Subject Re: [drlvm] VM throws NullPointerException in case java.class.path is not set
Date Wed, 11 Oct 2006 07:18:35 GMT
Oliver,

HARMONY-1818 was created to track this issue. Could you attach your
test case (simple  launcher) to it?

Thanks
Evgueni

On 10/10/06, Geir Magnusson Jr. <geir@pobox.com> wrote:
> Absolutely.  And if not, even the principle of "be kind to your users"
> dictates that we do something nice for them.
>
> geir
>
> Evgueni Brevnov wrote:
> > Oliver,
> >
> > You have provided strong arguments that RI uses current directory by
> > default. I think it makes sense to be compatible with RI in this
> > particular case.
> >
> > Thanks
> > Evgueni
> >
> > On 10/10/06, Oliver Deakin <oliver.deakin@googlemail.com> wrote:
> >> I have just tried launching the RI with a simple launcher (very basic -
> >> CreateJavaVM(),
> >> finds and launches a class, then calls DestroyJavaVM()). The launcher
> >> does not
> >> set java.class.path, and executes the main method of the following class:
> >>
> >>   public class SysInfo {
> >>       public static void main(String[] args) {
> >>                   System.getProperties().list(System.out);
> >>       }
> >>   }
> >>
> >> The java.class.path value is printed as:
> >>
> >>  java.class.path=
> >>
> >> So it appears that java.class.path property is left empty by default.
> >> However,
> >> to have found the SysInfo class, the RI must have searched in the current
> >> directory. I can also instantiate other classes that are located in the
> >> current
> >> directory. So although the java.class.path is set to an empty string,
> >> internally
> >> there is a default inclusion of the current directory.
> >>
> >> IMHO we follow the RI behaviour here, and have an implicit inclusion of
> >> the current directory unless the classpath is explicitly set.
> >>
> >> Regards,
> >> Oliver
> >>
> >>
> >> Evgueni Brevnov wrote:
> >> > It seems for me like pretty specified VM behavior to treat classpath
> >> > absence as take classes from current directory. At least RI does like
> >> > that when you don't specify classpath on command line.
> >> >
> >> > Evgueni
> >> >
> >> > On 10/10/06, Mikhail Fursov <mike.fursov@gmail.com> wrote:
> >> >> Another solution could be a simple shutdown with the valid error
> >> >> message.
> >> >> Sometimes the error message is better than hidden behaviour.
> >> >> So the alternative is to check all properties VM needs before running
> >> >> real
> >> >> startup and fail if some of the properties are not found.
> >> >>
> >> >>
> >> >> On 10/10/06, Evgueni Brevnov <evgueni.brevnov@gmail.com> wrote:
> >> >> >
> >> >> > Hi All,
> >> >> >
> >> >> > Currently DRLVM starts with help of the launcher. The launcher
> >> does a
> >> >> > lot of stuff required to create VM instatnce. As a part of its
> >> job it
> >> >> > sets up java.class.path property. And this is good. What is not
good
> >> >> > that DRLVM crashes (actually throws NullPointerException in
> >> >> > initalization stage) if java.class.path is not set. I believe
it
> >> makes
> >> >> > sense to point java.class.path to current directory inside VM
if
> >> >> > launcher doesn't set it.
> >> >> >
> >> >> > What do u think?
> >> >> >
> >> >> > Thanks
> >> >> > Evgueni
> >> >> >
> >> >> >
> >> ---------------------------------------------------------------------
> >> >> > Terms of use : http://incubator.apache.org/harmony/mailing.html
> >> >> > To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> >> >> > For additional commands, e-mail:
> >> harmony-dev-help@incubator.apache.org
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >> --
> >> >> Mikhail Fursov
> >> >>
> >> >>
> >> >
> >> > ---------------------------------------------------------------------
> >> > Terms of use : http://incubator.apache.org/harmony/mailing.html
> >> > To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> >> > For additional commands, e-mail: harmony-dev-help@incubator.apache.org
> >> >
> >> >
> >>
> >> --
> >> Oliver Deakin
> >> IBM United Kingdom Limited
> >>
> >>
> >> ---------------------------------------------------------------------
> >> Terms of use : http://incubator.apache.org/harmony/mailing.html
> >> To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> >> For additional commands, e-mail: harmony-dev-help@incubator.apache.org
> >>
> >>
> >
> > ---------------------------------------------------------------------
> > Terms of use : http://incubator.apache.org/harmony/mailing.html
> > To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: harmony-dev-help@incubator.apache.org
> >
>
> ---------------------------------------------------------------------
> Terms of use : http://incubator.apache.org/harmony/mailing.html
> To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
> For additional commands, e-mail: harmony-dev-help@incubator.apache.org
>
>

---------------------------------------------------------------------
Terms of use : http://incubator.apache.org/harmony/mailing.html
To unsubscribe, e-mail: harmony-dev-unsubscribe@incubator.apache.org
For additional commands, e-mail: harmony-dev-help@incubator.apache.org


Mime
View raw message