Re: JPL error

Paul,

This is what I get:

1 ?- jpl_new('java.util.Date', [], X).
ERROR: c:/program files/swipl/library/jpl.pl:4637:
        '$open_shared_object'/3: The specified module could not be found.
ERROR: Exported procedure jpl:jpl_c_lib_version/1 is not defined
ERROR: jpl:jFindClass/2: Undefined procedure: jpl:jni_func/3
   Exception: (10) jpl:jni_func(6, 'java/util/Date', @_G963) ?


The thing is I have two versions of the same prolog application on one
machine. One version is interpreted and the other saved with qsave from an
earlier version of prolog. The first does not run yet the 2nd runs fine. I
can rename either jvm.dll or java.dll and the expected error shows up. The
other one makes no difference (always error). It is interesting to note
that when I remove all path variables to jvm/java I get the jvm.dll popup
and a message saying need to add java.dll to WINEPATH. When I add that to
WINEPATH that error goes away and I get an error message saying the same
thing about jvm.dll. When I add that to WINEPATH that error message goes
away and the next error is Exported procedure jpl:jpl_c_lib_version/1 is
not defined. That would imply  it found jvm.dll and the jvm.dll popup error
happens in every case. I am wondering if the popup error message happens if
any one of several problems occur. Here is the progression of errors as I
fix specific errors:

No java.dll or jvm.dll in WINEPATH

% Added [C:\Program Files\Java\jre6\bin] to %PATH%
ERROR: c:/program files/swipl/library/jpl.pl:4637:
        '$open_shared_object'/3: The specified module could not be found.
ERROR: c:/program files/swipl/library/jpl.pl:4637:
        library `java' does not exist (Please add directory holding
java.dll to %WINEPATH%)
Warning: c:/program files/swipl/library/jpl.pl:4637:
        Goal (directive) failed: jpl:initialization(setup_jvm,now)
ERROR: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:1:
        Exported procedure jpl:jpl_c_lib_version/1 is not defined
%  library(jpl) compiled into jpl 0.06 sec, 2,230 clauses
ERROR: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:23:
        jpl:jFindClass/2: Undefined procedure: jpl:jni_func/3
Warning: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:23:
        Goal (directive) failed: user:jpl_text_entry_demo
% c:/Program Files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl compiled 0.06 sec, 2,236 clauses
Welcome to SWI-Prolog (Multi-threaded, 64 bits, Version 6.4.1)
Copyright (c) 1990-2013 University of Amsterdam, VU Amsterdam
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit http://www.swi-prolog.org for details.

WINEPATH now has C:\Program Files\Java\jdk1.6.0_43\jre\bin

ERROR: c:/program files/swipl/library/jpl.pl:4637:
        '$open_shared_object'/3: The specified module could not be found.
ERROR: c:/program files/swipl/library/jpl.pl:4637:
        library `jvm' does not exist (Please add directory holding jvm.dll
to %WINEPATH%)
Warning: c:/program files/swipl/library/jpl.pl:4637:
        Goal (directive) failed: jpl:initialization(setup_jvm,now)
ERROR: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:1:
        Exported procedure jpl:jpl_c_lib_version/1 is not defined
%  library(jpl) compiled into jpl 0.06 sec, 2,230 clauses
ERROR: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:23:
        jpl:jFindClass/2: Undefined procedure: jpl:jni_func/3
Warning: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:23:
        Goal (directive) failed: user:jpl_text_entry_demo
% c:/Program Files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl compiled 0.06 sec, 2,236 clauses
Welcome to SWI-Prolog (Multi-threaded, 64 bits, Version 6.4.1)
Copyright (c) 1990-2013 University of Amsterdam, VU Amsterdam
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit http://www.swi-prolog.org for details.

Notice the error message has changed. I now add C:\Program
Files\Java\jdk1.6.0_43\jre\bin\server to WINEPATH.


ERROR: c:/program files/swipl/library/jpl.pl:4637:
        '$open_shared_object'/3: The specified module could not be found.
ERROR: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:1:
        Exported procedure jpl:jpl_c_lib_version/1 is not defined
%  library(jpl) compiled into jpl 0.05 sec, 2,232 clauses
ERROR: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:23:
        jpl:jFindClass/2: Undefined procedure: jpl:jni_func/3
Warning: c:/program files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl:23:
        Goal (directive) failed: user:jpl_text_entry_demo
% c:/Program Files/swipl/doc/packages/examples/jpl/prolog/
jpl_text_entry_demo.pl compiled 0.05 sec, 2,238 clauses


The jvm.dll error goes away although I still get the jvm.dll popup error
message.

In your message you say that the registry is used to find things. Do you
mean the windows registry? The documentation says to use CLASSPATH/PATH
environment variables. Is there something in the windows registry that also
comes into play?

Thanks!

Jerry





On Wed, Jul 31, 2013 at 6:45 PM, Paul Singleton <[email protected]> wrote:

> On 31/07/2013 20:59, Jerry wrote:
>
>> There may be a problem with JPL in the current stable release. I have been
>> successfully using JPL since early July. Today, I uninstalled the 64 bit
>> windows version and reinstalled it as I was trying to determine if I had a
>> good compiled version of my application. At this point my application was
>> no longer able to initialize java. I have a compiled version from earlier
>> today that works. That was compiled with a 64 bit prolog version that I
>> downloaded earlier this month. I can run the earlier compiled version and
>> then go to the jpl examples from the packages directory which do not run.
>> That implies all the environment variables are pointing to the right
>> places.
>>
>> Here is the error I am getting:
>>
>
> If you start a fresh instance of SWI-Prolog (console or win) and do
>
> ?- jpl_new('java.util.Date', [], X).
>
> (or anything which wakes JPL up), you should see a message from Jan
>
> % Added [C:\Program Files\Java\jdk1.7.0_17\jre\**bin\client,C:\Program
> Files\Java\jdk1.7.0_17\jre\**bin,C:\Program Files\Java\jdk1.7.0_17\bin]
> to %PATH%
>
> What do you see, and does it make sense?
>
> I think Jan gets these paths from the registry; if you then see a popup
> saying jvm.dll cannot be found, they may be wrong, perhaps because of an
> incomplete un/reinstallation of a JRE?
>
> Paul Singleton
>
>
>  ERROR: c:/program files/swipl/library/jpl.pl:**4637 <http://jpl.pl:4637>:
>>          '$open_shared_object'/3: The specified module could not be found.
>> ERROR: c:/program files/swipl/doc/packages/**examples/jpl/prolog/
>> jpl_versions_demo.pl:1:
>>          Exported procedure jpl:jpl_c_lib_version/1 is not defined
>> %  library(jpl) compiled into jpl 0.05 sec, 2,232 clauses
>> ERROR: c:/program files/swipl/doc/packages/**examples/jpl/prolog/
>> jpl_versions_demo.pl:22:
>>          jpl:jFindClass/2: Undefined procedure: jpl:jni_func/3
>> Warning: c:/program files/swipl/doc/packages/**examples/jpl/prolog/
>> jpl_versions_demo.pl:22:
>>          Goal (directive) failed: user:jpl_versions_demo
>> % c:/Program Files/swipl/doc/packages/**examples/jpl/prolog/
>> jpl_versions_demo.pl compiled 0.05 sec, 2,238 clauses
>> I also get a popup stating that jvm.dll cannot be found. As stated, the
>> earlier compiled version runs fine. I looked for earlier versions of 64
>> bit
>> windows and the earliest I saw was from July 24th. I tried that one and
>> got
>> the same error.
>>
>> Any ideas?
>> Thanks!
>>
>> Jerry
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