Java: Get last element after split

Question

I am using the String split method and I want to have the last element. The size of the Array can change.

Example:

String one = \"Dü         


        

Answer 1

Also you can use java.util.ArrayDeque

String last = new ArrayDeque<>(Arrays.asList("1-2".split("-"))).getLast();

Answer 2

using a simple, yet generic, helper method like this:

public static <T> T last(T[] array) {
    return array[array.length - 1];
}

you can rewrite:

lastone = one.split("-")[..];

as:

lastone = last(one.split("-"));

Answer 3

Or you could use lastIndexOf() method on String

String last = string.substring(string.lastIndexOf('-') + 1);

Answer 4

I guess you want to do this in i line. It is possible (a bit of juggling though =^)

new StringBuilder(new StringBuilder("Düsseldorf - Zentrum - Günnewig Uebachs").reverse().toString().split(" - ")[0]).reverse()

tadaa, one line -> the result you want (if you split on " - " (space minus space) instead of only "-" (minus) you will loose the annoying space before the partition too =^) so "Günnewig Uebachs" instead of " Günnewig Uebachs" (with a space as first character)

Nice extra -> no need for extra JAR files in the lib folder so you can keep your application light weight.

Answer 5

You mean you don't know the sizes of the arrays at compile-time? At run-time they could be found by the value of lastone.length and lastwo.length .

Answer 6

String str = "www.anywebsite.com/folder/subfolder/directory";
int index = str.lastIndexOf('/');
String lastString = str.substring(index +1);

Now lastString has the value "directory"