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Groups > comp.lang.java.programmer > #29212
| Date | 2014-07-22 19:44 -0400 |
|---|---|
| From | Arne Vajhøj <arne@vajhoej.dk> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Java blunders |
| References | <jvbts91r2f9onj1e3dbr5lvqp70hmofkum@4ax.com> |
| Message-ID | <53cef75d$0$291$14726298@news.sunsite.dk> (permalink) |
| Organization | SunSITE.dk - Supporting Open source |
On 7/22/2014 2:41 PM, Roedy Green wrote:
> I have composed an essay about what I consider were the blunders in
> the design of Java. I hold out hope many of them will eventually be
> fixed. You might like to add to the list.
>
> see http://mindprod.com/jgloss/javablunders.html
# byte is signed. You almost never want a signed byte. Further,
# there is no unsigned byte. ubyte would be trivial to implement. It
# would require no changes to the JVM (Java Virtual Machine). It would
# catch all manner of bugs forgetting to do & 0xff after a byte load.
I completely agree.
# for each requires you to specify the type of the indexing
# variable. The compiler knows that from the type of the set it
# iterates over. This means needlessly propagating type information in
# more than one place in your program.
# You should be able to declare a temporary variable as having the same
# type as some other variable, so that for example if the original
# variable changes from int to long, the temporary will automatically
# change too.
You are really asking for the ability to use var/val and let the compiler
determine the type via type interference.
That is quite popular in languages today.
It could certainly be added to Java.
But I am so conservative that I think it would go against some
core Java principles.
# Java overuses {}. If you drop a } you can spend 15 minutes trying to
# get them balanced again. If methods, classes, loops, etc had unique
# end markers, there would be no problem. If methods, classes, loops
# etc had unique visual markers at begin and end, (perhaps small icons
# generated on the fly by the IDE (Integrated Development
# Environment)), code would be much easier to read and scan.
There are languages that use:
if ... end if
for ... end for
while ... end for
record ... end record
class ... end class
function ... end function
procedure ... end procedure
etc.
And I actually like that syntax.
But this can not be changed in Java without creating total
confusion.
Next language!
# Java uses + for both concatenation and addition. The ambiguity leads
# to all kinds of strange bugs.
Really?
That is not my impression.
> You should be able to have arrays of Objects, not just arrays of
> references to Objects so you could do an efficient Complex class.
You are asking for value types.
It could be added.
But it is a big chunk of complexity to add.
And I somewhat question whether the benefits are big enough
to outweigh the complexity.
Arne
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Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-22 11:41 -0700
Re: Java blunders Daniele Futtorovic <da.futt.news@laposte.net> - 2014-07-22 21:12 +0200
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-22 19:46 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 04:14 -0700
Re: Java blunders Joerg Meier <joergmmeier@arcor.de> - 2014-07-22 23:47 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 04:23 -0700
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-23 12:32 +0000
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-23 08:55 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 06:21 -0700
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-23 19:53 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 18:49 -0700
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-23 19:52 -0400
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-22 19:44 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 04:27 -0700
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-23 19:55 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 18:53 -0700
Re: Java blunders Joerg Meier <joergmmeier@arcor.de> - 2014-07-24 11:24 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-25 06:34 -0700
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-24 19:31 -0400
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-25 13:22 -0700
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-25 17:17 -0400
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-25 23:12 +0000
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 09:06 -0700
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-26 20:11 +0000
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-26 17:27 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-27 10:49 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-27 10:10 -0700
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-28 13:53 -0700
Re: Java blunders Stuart <DerTopper@web.de> - 2014-07-30 08:05 +0200
Re: Java blunders Sebastian <news@seyweiler.dyndns.org> - 2014-07-30 11:12 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-27 10:13 -0700
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-27 18:28 +0000
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-27 14:46 -0400
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-27 21:18 +0000
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-27 18:10 -0400
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-28 01:25 +0000
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-28 08:02 -0400
Re: Java blunders Mike Amling <mamling@chaff.us> - 2014-07-31 13:26 -0500
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-31 14:48 -0400
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-28 13:22 +0100
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-28 12:52 +0000
Re: Java blunders Joerg Meier <joergmmeier@arcor.de> - 2014-07-28 23:38 +0200
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-28 23:17 +0000
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-29 13:34 +0200
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-29 12:45 +0000
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-29 17:10 +0200
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-29 16:29 +0000
Re: Java blunders lipska the kat <lipskathekat@example.com> - 2014-07-29 20:15 +0100
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-29 22:02 +0000
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-29 22:43 +0200
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-29 22:10 +0000
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-27 19:18 -0500
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-28 13:54 -0700
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-31 23:07 -0400
Re: Java blunders James Hostick <james.hostick@gmail.com> - 2014-08-01 22:10 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 08:31 -0700
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-26 21:04 +0000
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-27 10:51 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-28 08:50 -0700
Re: Java blunders Joerg Meier <joergmmeier@arcor.de> - 2014-07-28 23:42 +0200
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-31 23:04 -0400
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-28 22:23 +0200
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-28 16:39 -0400
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-29 00:11 +0200
Re: Java blunders Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2014-07-30 12:07 +0300
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-30 08:05 -0400
Re: Java blunders Wanja Gayk <brixomatic@yahoo.com> - 2014-07-25 01:34 +0200
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-24 19:43 -0400
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-22 21:02 -0500
Re: Java blunders Leif Roar Moldskred <leifm@huldreskog.lan> - 2014-07-23 02:01 -0500
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 18:58 -0700
Re: Java blunders thinbluernime <thinbluernime3@gmail.com> - 2014-07-25 03:55 +0000
Re: Java blunders Leif Roar Moldskred <leifm@huldreskog.lan> - 2014-07-25 00:32 -0500
Re: Java blunders thinbluernime <thinbluernime3@gmail.com> - 2014-07-26 07:28 +0000
Re: Java blunders "Gavino" <invalid@invalid.invalid> - 2014-07-26 19:43 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-25 06:36 -0700
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-25 15:47 +0100
Re: Java blunders David Postill <david.postill@gmail.com> - 2014-07-25 18:29 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 09:27 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-25 06:37 -0700
Re: Java blunders Joerg Meier <joergmmeier@arcor.de> - 2014-07-23 13:17 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 06:27 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 04:44 -0700
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-23 16:23 +0200
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-23 12:02 -0400
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-24 11:37 +0200
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-28 22:37 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 09:33 -0700
Re: Java blunders thinbluernime <thinbluernime3@gmail.com> - 2014-07-25 03:57 +0000
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-23 21:38 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 18:59 -0700
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-24 07:33 +0000
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-24 11:47 +0200
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-24 19:34 -0400
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-25 08:48 +0200
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-25 08:07 -0400
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-25 13:54 +0100
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-31 22:53 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-25 07:04 -0700
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-28 22:01 +0200
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-28 21:56 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 06:28 -0700
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-23 08:33 -0500
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-23 21:34 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-23 19:06 -0700
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-23 22:11 -0500
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-24 07:36 +0000
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-24 19:39 -0400
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-25 13:40 +0100
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-24 19:38 -0400
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-25 13:30 -0700
Re: Java blunders taqmcg@gmail.com - 2014-07-23 11:26 -0700
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-23 15:14 -0400
Re: Java blunders thinbluernime <thinbluernime3@gmail.com> - 2014-07-25 04:07 +0000
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-07-25 08:35 -0400
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 09:41 -0700
Re: Java blunders Wanja Gayk <brixomatic@yahoo.com> - 2014-08-03 16:41 +0200
Re: Java blunders Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-03 11:31 -0400
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-23 22:41 -0500
Re: Java blunders taqmcg@gmail.com - 2014-07-24 10:09 -0700
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-25 13:22 +0100
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-25 20:34 -0500
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-28 13:33 +0100
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-28 08:35 -0500
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 09:44 -0700
Re: Java blunders Martin Gregorie <martin@address-in-sig.invalid> - 2014-07-26 23:36 +0000
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-23 20:48 -0700
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-24 11:56 +0200
Re: Java blunders Silvio <silvio@internet.com> - 2014-07-24 16:07 +0200
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-25 13:38 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 10:02 -0700
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-24 19:29 -0400
Re: Java blunders Gene Wirchenko <genew@telus.net> - 2014-07-25 13:45 -0700
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 10:53 -0700
Re: Java blunders Wanja Gayk <brixomatic@yahoo.com> - 2014-07-25 01:28 +0200
Re: Java blunders "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-07-25 14:16 +0100
Re: Java blunders Joerg Meier <joergmmeier@arcor.de> - 2014-07-25 17:39 +0200
Re: Java blunders Roedy Green <see_website@mindprod.com.invalid> - 2014-07-26 16:21 -0700
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-28 23:59 +0200
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-29 00:41 +0200
Re: Java blunders Josip Almasi <joe@vrspace.org> - 2014-07-29 01:54 +0200
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-31 22:38 -0400
Re: Java blunders Arne Vajhøj <arne@vajhoej.dk> - 2014-07-31 22:39 -0400
Re: Java blunders w.tom.adams@gmail.com - 2014-07-30 07:57 -0700
Re: Java blunders Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2014-07-30 10:22 -0500
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