[Off-Topic] Re: java.io.tempdir Problems

[Paul Speed <ps...@progeeks.com>]

It sounds like maybe there is some confusion between environment 
variables and system properties.

java.io.tempdir is a system property which presumably means it can be 
set on the Java command line using -Djava.io.tempdir="foo"

This is different then anything getenv() would return since those would 
be environment variables.  Some of which are reflected as differently 
named system properties.  For example, I think java.io.tempdir defaults 
to the TEMP environment variable under Windows and perhaps TMP under 
Unix or something like that.  I'd have to drill into javadocs to be sure.

-Paul

Michael McGrady wrote:

> I don't know if this is helpful or not, Martin, but if you attempt 
> System.getenv("java.io.tempdir") [which is deprecated], you get as part 
> of the error message
> "getenv no longer supported, use properties and -D instead: 
> java.io.tempdir".  Is that helpful?  Does the -D there mean as in 
> -Djava.io.tempdir?
> 
> Michael
> 
> Martin Gainty wrote:
> 
>> Good Afternoon Michael
>> Perusing the Manual for Jspc at
>> http://64.233.167.104/search?q=cache:pfbfEPvvvHUJ:www.gefionsoftware.com/Lit 
>>
>> eWebServer/lws-jsp/ReferenceManual.pdf+TOMCAT+java.io.tempDir+-Djava.io.temp 
>>
>> Dir&hl=en
>> formal syntax for the JSPC command
>> jspc [options] -webapp web-app-root-dir
>> Where option
>> -d output-dir specifies
>> The -d output-dir specification is the directory specified by the
>> java.io.tempdir system property
>> I see that there are 2 ways to specify java.io.tempdir System Property
>> Anyone else
>> The directory specified by the java.io.tempdirsystem property The 
>> directory
>> specified by the java.io.tempdirsystem property The directory 
>> specified by
>> the java.io.tempdirsystem property The directory specified by the
>> java.io.tempdir???
>> Martin
>> ----- Original Message -----
>> From: "Michael McGrady" <mi...@michaelmcgrady.com>
>> To: "Tomcat Developers List" <to...@jakarta.apache.org>
>> Sent: Thursday, October 14, 2004 11:46 AM
>> Subject: Re: java.io.tempdir Problems
>>
>>
>>  
>>
>>> Martin,
>>>
>>> Perhaps I should add, Martin, that if I set the environment variables
>>> for java.io.tempdir and -Djava.io.tempdir in the application but not in
>>> Tomcat startup, I don't have the problem.  I am a bit confused about
>>> whether to use java.io.tempdir or -Djava.io.tempdir.  Can you explain a
>>> bit about that?
>>>
>>> Michael McGrady
>>>
>>> Martin Gainty wrote:
>>>
>>>   
>>>
>>>> Michael
>>>> createTempFile employs 3 steps algorithm to locate/create "tempDir"
>>>> 1) Attempt to retrieve the value of "javax.servlet.context.tempdir" 
>>>> from
>>>>     
>>
>> the
>>  
>>
>>>>  ServletContext
>>>> 2) If that's not found, attempt to retrieve the value of the
>>>>     
>>
>> init-parameter
>>  
>>
>>>>  "tempDir"
>>>> 3) If that's not found, default to the system-wide temp directory
>>>>     
>>
>> specified
>>  
>>
>>>>  by the system property "java.io.tempdir"
>>>> A)what is the value of "javax.servlet.context.tempdir" from the
>>>> ServletContext?
>>>> B)what is the value of the init-parameter   "tempDir"?
>>>> Martin-
>>>> ----- Original Message -----
>>>> From: "Michael McGrady" <mi...@michaelmcgrady.com>
>>>> To: "Tomcat Developers List" <to...@jakarta.apache.org>
>>>> Sent: Thursday, October 14, 2004 3:16 AM
>>>> Subject: java.io.tempdir Problems
>>>>
>>>>
>>>>
>>>>
>>>>     
>>>>
>>>>> I hope this is Tomcat related.  If not, please accept my apologies, 
>>>>> and
>>>>> give me direction.  I have removed from my Tomcat 5 (Struts 1.2 
>>>>> using a
>>>>> custom taglib) service the java.io.tempdir setting because when I use
>>>>> the following code:
>>>>>
>>>>>    File file = new File(Classpath.WEB_INF +
>>>>>                    "resource"        + File.separator +
>>>>>                    "content_type"    + File.separator +
>>>>>                    "ttf"             + File.separator +
>>>>>                     physicalName);
>>>>>    FileInputStream fontStream = new FileInputStream(file);
>>>>>    Font font = Font.createFont(Font.TRUETYPE_FONT,fontStream);
>>>>>    font = font.deriveFont(attributes);
>>>>>    fontStream.close();
>>>>>
>>>>> I get temp files of around 50 - 150 kilobytes each written to the temp
>>>>> directory.  I requested assistance on Tomcat User without an answer.
>>>>>
>>>>> Anyway, I assume that there may be a concurrency issue of 
>>>>> somekind.  Is
>>>>> that right?  Anyone with any assistance out there?
>>>>>
>>>>> Michael McGrady
>>>>>
>>>>>
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>>>>>
>>>>>
>>>>>
>>>>>
>>>>>       
>>>>
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>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>     
>>>
>>>   
>>
>>
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>>
>>
>>
>>  
>>
> 
> 
> 
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