Groups > comp.lang.java.programmer > #36252

Re: Type conversions with the empty string

From	Arne Vajhøj <arne@vajhoej.dk>
Newsgroups	comp.lang.java.programmer
Subject	Re: Type conversions with the empty string
Date	2017-02-13 12:46 -0500
Organization	Aioe.org NNTP Server
Message-ID	<o7srdo$15g8$1@gioia.aioe.org> (permalink)
References	<emtpy-string-20170128143107@ram.dialup.fu-berlin.de> <ef6l8kF5p6bU1@mid.individual.net> <gkienx5o72gf.r7zyv6z3bfpc.dlg@40tude.net> <ef8e4gFgaq3U1@mid.individual.net> <15m3gy8mef7tv$.93ppj4f0t83$.dlg@40tude.net>

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On 2/7/2017 3:26 AM, Joerg Meier wrote:
> On Mon, 30 Jan 2017 10:08:30 +0100, Robert Klemme wrote:
>>   - Although it is of course perfectly legal to implement a class called
>> "String" in any other package someone who does that would have to have
>> very good reasons to do it - especially since it makes any reference to
>> java.lang.String extremely tedious.
>
> You misunderstood. You can literally have a class named java.lang.String,
> and if it is early enough on the class path, it can override "the"
> java.lang.String. Due to j.l.String being final, this is (short of evil
> Reflection magic) the only way to add or change behaviour of the String
> class that still works with classes accepting only String as a parameter.
>
> Now, clearly, that is not a GOOD programming practice, but not everyone
> writes code for noble reasons. This line of thinking is more about attack
> vectors and less about accidental mistakes.

I would think/hope that if someone already have enough control to do
that, then security is totally compromised.

Arne

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Thread

Re: Type conversions with the empty string Robert Klemme <shortcutter@googlemail.com> - 2017-01-29 17:57 +0100
  Re: Type conversions with the empty string Joerg Meier <joergmmeier@arcor.de> - 2017-01-30 07:39 +0100
    Re: Type conversions with the empty string Robert Klemme <shortcutter@googlemail.com> - 2017-01-30 10:08 +0100
      Re: Type conversions with the empty string Joerg Meier <joergmmeier@arcor.de> - 2017-02-07 09:26 +0100
        Re: Type conversions with the empty string Andreas Leitgeb <avl@logic.at> - 2017-02-07 08:34 +0000
        Re: Type conversions with the empty string lewbloch@gmail.com - 2017-02-12 11:20 -0800
          Re: Type conversions with the empty string Joerg Meier <joergmmeier@arcor.de> - 2017-02-13 08:40 +0100
            Re: Type conversions with the empty string Andreas Leitgeb <avl@logic.at> - 2017-02-13 17:38 +0000
              Re: Type conversions with the empty string Andreas Leitgeb <avl@logic.at> - 2017-02-13 17:48 +0000
                Re: Type conversions with the empty string Robert Klemme <shortcutter@googlemail.com> - 2017-02-16 10:53 +0100
                Re: Type conversions with the empty string lewbloch@gmail.com - 2017-02-19 02:42 -0800
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-19 08:45 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 09:20 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 09:21 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-19 10:51 -0500
                Re: Type conversions with the empty string Robert Klemme <shortcutter@googlemail.com> - 2017-02-19 19:55 +0100
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-19 15:55 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 23:31 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 08:39 -0500
                Re: Type conversions with the empty string Eric Douglas <e.d.programmer@gmail.com> - 2017-02-20 06:10 -0800
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 09:54 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 10:25 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 11:02 -0500
                Re: Type conversions with the empty string Eric Douglas <e.d.programmer@gmail.com> - 2017-02-20 08:45 -0800
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 14:46 -0500
                Re: Type conversions with the empty string Eric Douglas <e.d.programmer@gmail.com> - 2017-02-20 12:23 -0800
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 16:31 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 11:58 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 14:46 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 15:45 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 15:54 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 20:31 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 09:13 -0500
                Re: Type conversions with the empty string Martin Gregorie <martin@address-in-sig.invalid> - 2017-02-19 14:43 +0000
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 10:11 -0500
                Re: Type conversions with the empty string Martin Gregorie <martin@address-in-sig.invalid> - 2017-02-19 15:20 +0000
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-19 10:53 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 23:24 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 08:43 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 10:16 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 11:03 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 12:00 -0500
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-20 14:49 -0500
                Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 15:47 -0500
                Re: Type conversions with the empty string lewbloch@gmail.com - 2017-02-20 22:18 -0800
                Re: Type conversions with the empty string Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-21 08:23 -0500
            Re: Type conversions with the empty string lewbloch@gmail.com - 2017-02-19 02:39 -0800
        Re: Type conversions with the empty string Arne Vajhøj <arne@vajhoej.dk> - 2017-02-13 12:46 -0500

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