how can create multiple files with same name in the same directory using java?

Question

As per my requirement,i need to upload a file into a specified directory,later after some modifications, i need to upload the same file into the same directory,here previous file should not be overridden means files must be saved in the same directory with same names(here i have one assumption,that , for example if my file is abc.txt, after modifications if i upload the modified file it can be saved as abc(1).txt ). how can i resolve my issue? can anybody assist me to come out from this issue.

Thanks in advance.

Possible duplicate of: Create files with similar names using Java without overwriting existing file — Greg Kopff
– Greg Kopff, Commented May 31, 2012 at 6:35

nhahtdh · Accepted Answer · 2015-06-03 10:58:52Z

1

Use File.createNewFile() in a while loop. It will create the file if and only if the file does not exist. This is thread-safe, since the API guarantees atomicity.

Checking the existence of the file with File.exists() in a loop does not give you such guarantee.

edited Jun 3, 2015 at 10:58

answered May 31, 2012 at 6:35

nhahtdh

56.9k15 gold badges131 silver badges164 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

tagtraeumer · Accepted Answer · 2012-05-31 06:36:00Z

0

if you can persist the number of uploads you could increment a number for each particular file and attend it to your filename (e.g. foo_1.txt or however you want) if you can't you might wanna go through all your files and check if they fit your naming schema. then you can extract the highest number, increment it by 1 and append it to your new file.

answered May 31, 2012 at 6:36

tagtraeumer

1,49111 silver badges22 bronze badges

Comments

Markus Lausberg · Accepted Answer · 2012-05-31 06:38:39Z

0

check the methods of File like:

exists()

if the file is existing you can count a number and create a new file name like

newFilename = MessageFormat.format("({0}){1}", counter++, originalFilename);
File newFile = new File(originalFile.getParentFile(),newFilename);

You can create and check new files as long as you find a filename which is not existing.

answered May 31, 2012 at 6:38

Markus Lausberg

12.3k6 gold badges43 silver badges66 bronze badges

Collectives™ on Stack Overflow

how can create multiple files with same name in the same directory using java?

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related