Trimming a directory path String

Question

I have a String file path

String filePath = "/tmp/test/save/data/java/"

and would like to remove the last 2 directories and last / so that,

String filePath = "/tmp/test/save"

I don't want to create a substring removing the last 10 characters, as the directories might change in length.
I was thinking about doing a combination of split (setting a limit and removing the final index), then join to recreate the string with / seperators, but wondering if there's a cleaner way ?

Answer 1

You could use java.nio.file.Path#getParent.

String result = Paths.get("/tmp/test/save/data/java/").getParent()
                  .getParent().toString();

Answer 2

From java.nio.file.Path we can use subpath:

Path path = Paths.get("/tmp/test/save/data/java/");
String result = p.subpath(0, p.getNameCount() - 2);

Answer 3

You can use a combination of lastIndexOf("/") and subString() in a for loop to remove the unwanted directories. Java String documentations to learn how to use the methods.