Try something like this: 
sub new {
    my $class = shift;
    my $device = shift;
    my $self = {
      'device' => $device,
    };
    bless $self, $class;
    $self->setInformation($device);
    return $self;
}

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There's nothing particularly magical about bless -- you can call it in the middle of the constructor with no ill effects, as long as you remember to explicitly return the object you created.

-- David Irving

In reply to Re: calling a method within a constructor by dirving
in thread calling a method within a constructor by ocs

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