Java: get last element after split

Question

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

examples :

 String one =  "Düsseldorf - Zentrum - Günnewig Uebachs"
 String two =  "Düsseldorf - Madison"

i want to split this and get the last item :

lastone = one.split("-")[here the last item] <- how?
lasttwo = one.split("-")[here the last item] <- how?

i don't know the sizes of the arrays at rumtime :(

Answer 1

Save the array in a local variable and use the array's length field to find its length. Subtract one to account for it being 0-based:

String[] bits = one.split("-");
String lastOne = bits[bits.length-1];

Answer 2

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 3

Or you could use lastIndexOf() method on String

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

Answer 4

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("-"));