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Java 8 and Windows XP?

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  Java 8 and Windows XP? Knute Johnson <eternal@knutejohnson.com> - 2014-06-18 07:40 -0700
    Re: Java 8 and Windows XP? Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-06-18 11:43 -0400
      Re: Java 8 and Windows XP? Knute Johnson <eternal@knutejohnson.com> - 2014-06-18 09:23 -0700
        Re: Java 8 and Windows XP? Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-06-18 13:34 -0400
    Re: Java 8 and Windows XP? "Qu0ll" <Qu0llSixFour@gmail.com> - 2014-06-19 08:31 +1000
      Re: Java 8 and Windows XP? Knute Johnson <eternal@knutejohnson.com> - 2014-06-18 16:02 -0700
        Re: Java 8 and Windows XP? Arne Vajhøj <arne@vajhoej.dk> - 2014-06-21 23:16 -0400
    Re: Java 8 and Windows XP? Roedy Green <see_website@mindprod.com.invalid> - 2014-06-22 04:04 -0700

#28770 — Java 8 and Windows XP?

Anybody had a problem installing Java 8 on WinXP?  I tried today to 
install and got a message about a missing entry point and Windows DLL.

7 installs fine but I was hoping to get everybody up to 8.  The code 
doesn't use any features of 8 so I just compiled with 8 and used target 
and source 7.  That should work shouldn't it?

Thanks,

-- 

Knute Johnson

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#28772

On 6/18/2014 10:40 AM, Knute Johnson wrote:
> Anybody had a problem installing Java 8 on WinXP?  I tried today to
> install and got a message about a missing entry point and Windows DLL.

     Quoth Wikipedia: "Java 8 is not supported on Windows XP. But as of
JDK 8 update 5, it still can run under Windows XP after forced
installation by directly unzipping from the installation executable."

     (If this procedure gives you "a message," please be sure to
tell us you received "a message."  Helps with diagnosis, y'know. ;)

> 7 installs fine but I was hoping to get everybody up to 8.  The code
> doesn't use any features of 8 so I just compiled with 8 and used target
> and source 7.  That should work shouldn't it?

     If you're compiling against 7's rt.jar and stuff, I think it
should work.  But if you're using 8's class libraries (even if you
don't make explicit use of their new features) you may be out of
luck trying to use the compiled .class files with 7.

-- 
Eric Sosman
esosman@comcast-dot-net.invalid

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#28773

On 6/18/2014 08:43, Eric Sosman wrote:
> On 6/18/2014 10:40 AM, Knute Johnson wrote:
>> Anybody had a problem installing Java 8 on WinXP?  I tried today to
>> install and got a message about a missing entry point and Windows DLL.
>
>      Quoth Wikipedia: "Java 8 is not supported on Windows XP. But as of
> JDK 8 update 5, it still can run under Windows XP after forced
> installation by directly unzipping from the installation executable."
>
>      (If this procedure gives you "a message," please be sure to
> tell us you received "a message."  Helps with diagnosis, y'know. ;)

Stupid Windows, you can't copy from their error dialogs and I my CRS is 
getting pretty bad these days.  And I couldn't go back and try it again 
to get the message because they needed to bring their system up.

>> 7 installs fine but I was hoping to get everybody up to 8.  The code
>> doesn't use any features of 8 so I just compiled with 8 and used target
>> and source 7.  That should work shouldn't it?
>
>      If you're compiling against 7's rt.jar and stuff, I think it
> should work.  But if you're using 8's class libraries (even if you
> don't make explicit use of their new features) you may be out of
> luck trying to use the compiled .class files with 7.
>

Seems to run on the client's computer fine but I'm going to have to 
install the Java 7 JDK again so I can get at that rt.jar.

Thanks,

-- 

Knute Johnson

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#28774

On 6/18/2014 12:23 PM, Knute Johnson wrote:
> On 6/18/2014 08:43, Eric Sosman wrote:
>> On 6/18/2014 10:40 AM, Knute Johnson wrote:
>>> [...]
>>> 7 installs fine but I was hoping to get everybody up to 8.  The code
>>> doesn't use any features of 8 so I just compiled with 8 and used target
>>> and source 7.  That should work shouldn't it?
>>
>>      If you're compiling against 7's rt.jar and stuff, I think it
>> should work.  But if you're using 8's class libraries (even if you
>> don't make explicit use of their new features) you may be out of
>> luck trying to use the compiled .class files with 7.
>
> Seems to run on the client's computer fine but I'm going to have to
> install the Java 7 JDK again so I can get at that rt.jar.

     I'd half-expect that a JDK8-compiled class file might contain
references to interfaces and so on that didn't exist in 7.  But
perhaps (1) you're lucky, or (2) Oracle used more care than I'd
given them credit for.

     Safest course: If you're going to execute with Java N, compile
with JDK <=N.

-- 
Eric Sosman
esosman@comcast-dot-net.invalid

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#28775

"Knute Johnson"  wrote in message news:lns8cp$itl$1@dont-email.me...

> Anybody had a problem installing Java 8 on WinXP?

Java 8 most definitely does not support Windows XP and trying to get it to 
work would be way more trouble than it's worth in my opinion.

XP is now 13 years old.  Time to move on perhaps?

--
And loving it,

-Qu0ll (Rare, not extinct)
_________________________________________________
Qu0llSixFour@gmail.com
[Replace the "SixFour" with numbers to email me] 

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#28776

On 6/18/2014 15:31, Qu0ll wrote:
> "Knute Johnson"  wrote in message news:lns8cp$itl$1@dont-email.me...
>
>> Anybody had a problem installing Java 8 on WinXP?
>
> Java 8 most definitely does not support Windows XP and trying to get it
> to work would be way more trouble than it's worth in my opinion.
>
> XP is now 13 years old.  Time to move on perhaps?
>
> --
> And loving it,

My client will have XP for the foreseeable future, unfortunately.  They 
can still get support from MS but it is going to get more and more 
difficult to service them.

They've been talking a major upgrade for some time but that involves a 
lot of new hardware and construction.  The last I heard was maybe by the 
end of the year.  I'll have lots of work if they pull the trigger but 
till then it's XP :-).

-- 

Knute Johnson

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#28811

On 6/18/2014 7:02 PM, Knute Johnson wrote:
> On 6/18/2014 15:31, Qu0ll wrote:
>> "Knute Johnson"  wrote in message news:lns8cp$itl$1@dont-email.me...
>>
>>> Anybody had a problem installing Java 8 on WinXP?
>>
>> Java 8 most definitely does not support Windows XP and trying to get it
>> to work would be way more trouble than it's worth in my opinion.
>>
>> XP is now 13 years old.  Time to move on perhaps?
>
> My client will have XP for the foreseeable future, unfortunately.  They
> can still get support from MS but it is going to get more and more
> difficult to service them.
>
> They've been talking a major upgrade for some time but that involves a
> lot of new hardware and construction.  The last I heard was maybe by the
> end of the year.  I'll have lots of work if they pull the trigger but
> till then it's XP :-).

Keep everything updated to supported versions or combination of versions 
is always a valid strategy. If the system in question
is exposed to security risks the recommendation should be latest
supported versions or combination of versions.

An often seen strategy is to keep a working system as is. If it
ain't broke don't fix it. Ignore that certain software versions are
no longer supported. Obviously this strategy is not good if the
system in question is exposed to security risks.

But what you are proposing:
* keep existing unsupported version of some software
* update other software to latest and greatest
* resulting in an unsupported and most likely very rare
   software combination
is a very risky strategy in my opinion. You can get all types
of problems.

Arne

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#28816

On Wed, 18 Jun 2014 07:40:26 -0700, Knute Johnson
<eternal@knutejohnson.com> wrote, quoted or indirectly quoted someone
who said :

>7 installs fine but I was hoping to get everybody up to 8.  The code 
>doesn't use any features of 8 so I just compiled with 8 and used target 
>and source 7.  That should work shouldn't it?

Target does not stop you from using new 1.8 methods. To be fully sure
you must compile with the 1.7 libraries or with the 1.7 JDK.
-- 
Roedy Green Canadian Mind Products http://mindprod.com
Why program by hand in 5 days what you can spend
2 to 5 years of your life automating.
~ Terence Parr 1964-08-17

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