Re: Octave 4 installer doesn't detect JRE at install time

[Tatsuro MATSUOKA]

----- Original Message -----

> From: Tatsuro MATSUOKA>
> To: Will <whopper; help
> Cc: 
> Date: 2015/6/6, Sat 15:09
> Subject: Re: Octave 4 installer doesn't detect JRE at install time
> 
> ----- Original Message -----
> 
>>  From: Will <>
>>  To: help> Cc: 
>>  Date: 2015/6/6, Sat 10:48
>>  Subject: Re: Octave 4 installer doesn't detect JRE at install time
>> 
>>  I did reboot the computer. For a bit more information, I also just tried 
> setting 
>>  the JAVA_HOME environment variable to  C:/Program Files/Java/jre1.8.0_45, 
> and 
>>  this actually got rid of the warning message when running the installer, 
> but 
>>  when testing things out when running Octave, commands like 
>>  'javaclasspath' and  's = javaObject 
> ("java.lang.String", 
>>  "Hello OctaveString")' as recommended in the wiki, they 
> return 
>>  "error: unable to find Java Runtime Environment: 
>>  software\javasoft\java runtime environment::Currentversion".
>> 
>>  - Will
>> 
>> 
>>  On 6/5/2015 9:06 PM, address@hidden wrote:
>>>>   Hi all,
>>>> 
>>>>   Today I downloaded and installed the Octave 4.0 release from here 
>>  https://ftp.gnu.org/gnu/octave/windows/, but got a warning about not 
> detecting 
>>  the java runtime environment. This was true - it wasn't installed, so I 
> went 
>>  and grabbed the JRE and JDK (64-bit, version 8 update 45), rebooted 
> windows, and 
>>  tried to install Octave again. But, the installer still threw the warnings 
> about 
>>  not detecting the JRE. I accepted all the defaults during installation of 
> the 
>>  JRE and JDK, and installed in the standard path (C:/Program 
>>  Files/Java/jre1.8.0_45). Any idea what I need to do to get Octave to detect 
> the 
>>  JRE at install time? The Java integration was something I was quite looking 
> 
>>  forward to!
>>>> 
>>>>   Thanks in advance (hope I'm not missing the obvious!)
>>>> 
>>>>   - Will
>>>   I have not experienced the jre detection problem. Did you reboot your 
>>  computer after the jre was installed?
>>> 
>>>   Tatsuro
>>> 
>> 
> On the octave ML top-posting is not preferable, please use the bottom-posting.
> (See http://en.wikipedia.org/wiki/Posting_style)
> This is a custom in the octave ML. 
> When in Rome, do as the Romans do.
> 
> 
> s = javaObject ("java.lang.String", "Hello OctaveString")
> 
> 
> worked for me on octave 4.0.0 on windows 7.
> 
> *****************************
>>>  s = javaObject ("java.lang.String", "Hello 
> OctaveString")
> s =
> 
> <Java object: java.lang.String>
> *****************************
> 
> 
> Mmmmm, 
> 
> Something should be wrong in your environments but I cannot find what is 
> something.
> Tatsuro


Oops! I have been overlooked that you installed 64 bit version the JRE.


Windows binary of octave-4.0.0 provided on octave ftp site is 32 bit version.
so I have been using 32 bit version JRE (from Oracle site).

Do you think that 64 bit JRE can be used for 32 bit applications?

You can install 32 bit and 64 bit JRE simultaneously.
Please install 32 bit version JRE and then try to uninstall and re-install 
octave-4.0.0.


Tatsuro