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javadirectoryfilenamesrenamelastindexof

How do I distinguish between a file and a folder when renaming a file/folder in java

I am currently programming a file name normaliser. Files have a format and folders dont. When I rename a file I need to make sure that I do not affect the format therefore I did 

fileName.substring(fileName.lastIndexOf("."),fileName.length)

thereby if I want to replace all the periods in a fileName it does not affect the format, when a folder with periods in its name goes through this process, the last instance of the period is still part of its name, therefore it does not replace all the dots in the folders name. I need to know how to distinguish between a file and a folder so I can fix this.

Solution

  • You can use 

    someFile.isDirectory();

    It returns true if the file is a folder, and false if not.