Question

Deleting the File forcefully using JAVA

Asked by: calju


I created a directory(actual) in JBoss app server's Bin directory .
I am storing image files in that directory.
I can able to read and write in to the files.
But i could not able to delete that files.
I closed all the input and outputstreams ,i used.


After i performing R/W operation i want to delete that files (Forcefully).

I need a soution for this.

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Asked On
2006-03-20 at 05:03:52ID21780588
Tags

delete

,

file

,

java

,

forcefully

,

using

Topic

Java Programming Language

Participating Experts
7
Points
500
Comments
11

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Answers

 

by: CEHJPosted on 2006-03-20 at 05:05:53ID: 16234877

>>in JBoss app server's Bin directory .

Isn't that rather dangerous?

 

by: avinthmPosted on 2006-03-20 at 05:19:32ID: 16234961

whts the error message u are getting ?

first of all, can u delete the directory when the server has started ? (just hav a check)

 

by: mayankeaglePosted on 2006-03-20 at 05:54:43ID: 16235219

I don't think you will be allowed to delete any file within the same directory in which the server has been installed without stopping the server. If you create the directory programatically for storing files temporarily then why cannot you create it on another location, outside of the server's directory? You can also create a temp-file in Java using File.createTempFile () if I remember the name correct.

 

by: omry_yPosted on 2006-03-20 at 05:58:03ID: 16235252

maybe the jboss process lock the directory.
try a different directory for this, maybe use the temporary file API (File.createTempFile).

there is not API in java to force deletion of a file.
in fact, its an OS issue - I assume you use Windows- and in Windows, applications can lock files, and these files can't be deleted.
that is the main reason for all the windows reboots needed when installing some programs, btw.
on Linux/Unix you will not have a problem to delete the files.

 

by: TimYatesPosted on 2006-03-20 at 06:15:54ID: 16235395

Q1)  Which version of JBoss?
Q2)  How are you trying to delete the file?  (source code?)
Q3)  Which version of Java?

 

by: sciuriwarePosted on 2006-03-20 at 07:56:19ID: 16236542

1) put the file in a temp directory, like C:\TMP or /tmp (on linux/unix),
2) after creating the File object, practise:
       File f = new File(.....................................);
         f.deleteOnExit();    // And no worries anymore.

;JOOP!
     

 

by: objectsPosted on 2006-03-20 at 13:08:52ID: 16240692

> You can also create a temp-file in Java using File.createTempFile () if I remember the name correct.

http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html#createTempFile(java.lang.String,%20java.lang.String,%20java.io.File)

 

by: mayankeaglePosted on 2006-03-30 at 03:42:05ID: 16331074

The accepted answer is almost same as File.createTempFile () ;-)

 

by: sciuriwarePosted on 2006-03-30 at 06:38:24ID: 16332689

Thanks, calju.

Indeed, many ways lead to the target.

;JOOP!

 

by: sciuriwarePosted on 2006-03-30 at 06:39:06ID: 16332700

mayankeagle, don't sob: it's only C

 

by: mayankeaglePosted on 2006-03-30 at 20:26:12ID: 16339427

Ha ha :) that's not the problem, buddy. Just kidding.

20120131-EE-VQP-002

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