What are possible reasons for java.io.IOException: “The filename, directory name, or volume label syntax is incorrect”

Question

I am trying to copy a file using the following code:

File targetFile = new File(targetPath + File.separator + filename);
...
targetFile.createNewFile();
file         


        

Answer 1

Maybe the file already exists. It could be the case if your timestamp resolution is not good enough. As it is an IOException that you are getting, it might not be a permission issue (in which case you would get a SecurityException).

I would first check for file existence before trying to create the file and try to log what's happening.

Look at public boolean createNewFile() for more information on the method you are using.