You can do this pretty simply with a short regex and the toString
method, heres a quick example:
TreePath tp = new TreePath(new String[] {"tmp", "foo", "bar"});
String path = tp.toString().replaceAll("\\]| |\\[|", "").replaceAll(",", File.separator);
File f = new File(path);
// path is now tmp\foo\bar on Windows and tmp/foo/bar on unix
EDIT: Explanation
tp.toString()
- this calls the native to string method of an array, since that is the way TreePaths are represented under the covers. returns:[tmp, foo, bar]
replaceAll("\\]| |\\[|", "")
- this uses a simple regular expression to replace the characters[
and]
and also removes empty spaces. The character|
means or in JAVA's flavor of RegEx, so this means "if we encounter a left bracket, right bracket or empty space, replace it the empty string." returns:tmp,foo,bar
.replaceAll(",", File.separator)
- the final step, this replaces commas with the native file path separator. returns:tmp/foo/bar or tmp\foobar