grep said:
> > > sometimes i like java for one very simple reason, one class
> > > per file .....
I countered :
> > Huh? You don't do much Java programming, do you Greg?
grep followed :
> i was led to believe that there you could only have one class per
> file in Java (excluding jar's of course)
>
> Is this something that has changed since Java V1.1?
Yep.
Later versions of Java (1.2 onwards) introduce the concept of Inner
Classes:
1. Member classes - Classes that are defined in the same file as the
original class. Come in two flavours static member classes and normal
member classes. Essentially the same as declaring them in a separate
subdirectory, with a few quirks. Very similar to defining multiple
packages in Perl, but with the exception in Java you're forced to have
a the same prefix to the class name.
2. Local Classes - classes that can only be seen within the class/by
referring via the parent class - defined inside the {} of the main
class. Can access private variables and suchlike. Quite a nifty idea,
but I always end up moving out my Local classes when I find I need to
reuse the code....
3. Anonymous classes - oft used to derive trivial subclasses of event
handlers, anonymous subclasses are classes defined within statments
themselves, somewhat like a perl programmer would define an anonymous
subroutine. IMHO terrible syntax (very difficult to make readable code)
and a bit of a hack since Java can't do closures and anonymous
subroutines properly.
This is of course a very glib overview. I suggest that those interested
parties have a look for themselves (Java may be mostly evil, but it's a
good idea to know what good/bad features it has.) Java in a Nutshell 3rd
Edition, pg 117 might be a good place to start.
Later.
Mark.
--
print "\n",map{my$a="\n"if(length$_>6);' 'x(36-length($_)/2)."$_\n$a"} (
Name => 'Mark Fowler', Title => 'Technology Developer' ,
Firm => 'Profero Ltd', Web => 'http://www.profero.com/' ,
Email => '[EMAIL PROTECTED]', Phone => '+44 (0) 20 7700 9960' )
