How can I split a String in Expression Language and take the last element?

Question

This is what I am trying but it seems not to work:

(myStringHere.split(".")[(myStringHere.split(".").length)-1]).concat(text[myStringHere])

The string I have will be something like this:

com.foo.bar.zar.gar.ThePartIWant

ThePartIWant is what I want to show in the page only.

I am using Expression Language 2.2

Solution

If you are doing it in JSP then try with JSP JSTL function tag library that provide lost of methods as defined here in JavaDoc

Read more here on Oacle The Java EE 5 Tutorial - JSTL Functions

Here is the code to get the last value based on split on dot.

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
 ...

<c:set var="string1" value="This.is.first.String." />
<c:set var="string2" value="${fn:split(string1, '.')}" />

<c:set var="lastString" value="${string2[fn:length(string2)-1]}" />

<c:out value="${lastString }"></c:out>

output:

String

---

Here is one more example

Comments

[Koray Tugay]

I am using Expression Language and I need to get this done in one line.

[Koray Tugay]

Thanks but does not work: javax.el.ELException: /test/test.xhtml: For input string: "length"

[Kabulan0lak]

string result = myStringHere.split(".")[myStringHere.split(".").length - 1]; doesn't work ?!

[Koray Tugay]

No, does not work: javax.el.ELException: /test/test.xhtml: For input string: "length"

[Kabulan0lak]

Maybe if you cast it string result = myStringHere.split(".")[((string[])myStringHere.split(".")).‌​length - 1]; ?