Question

I have a string that is output as a date:

#{bean.someString}

I want to take that string and manipulate it using regular expressions like so:

• original string: “11/22”
• expected string: “22/11”

I have tried to use a regular expression using f:replace, such as:

#{fn:replace(bean.someString, "(.*?)/(.*?)", "$2/$1")}

But it comes out as:

• actual string: “/1122”

Anyone know how I can do this? Thanks in advance.

Answer 1

Below is the answer (after much tribulation).

Because I have a fixed set of characters to traverse I can use the following to get the correct replacement:

#{fn:replace(bean.someString, "(.{2})/(.{2})", "$2/$1")}

Craziness that normal regex doesn’t work here.