How to get relative file path to folder using java

Question

Possible duplicate:
How to build a relative path in Java from two absolute paths (or URLs)?

using java, is there a way to return the relative path of a file to a given folder?

Answer 1

In Java, there is no way to include what you want. Maybe there is a library out there somewhere (I can't think of anything out of myself, and Apache Commons IO doesn't seem to have this). You can use this or something like this:

// returns null if file isn't relative to folder public static String getRelativePath(File file, File folder) { String filePath = file.getAbsolutePath(); String folderPath = folder.getAbsolutePath(); if (filePath.startsWith(folderPath)) { return filePath.substring(folderPath.length() + 1); } else { return null; } } 

Answer 2

between File.getPath () and String.split () you should all do this.

http://download.oracle.com/javase/6/docs/api/java/io/File.html#getPath%28%29

http://download.oracle.com/javase/6/docs/api/java/lang/String.html#split%28java.lang.String%29