How to get the length of "prüfen" in velocity

Question

I was trying to get the length of "prüfen" in velocity.

Example:

#set ($data = "prüfen")

#set( $total_length = $data.length())

$total_length  // Output is 6

Question : I want output as 7 (as character "ü" occupies size of 2) How to get the length of "prüfen" in velocity.

I have also tried with

#set( $len_of_data = $data.getBytes().length)

$len_of_data

But nothing is working.

Answer 1

This seems to work:

#set ($data = "prüfen")
#set( $total_length = $data.getBytes('UTF-8').size())
$total_length

Be sure to configure Velocity with input.encoding = UTF-8.

With Velocity 1.7+, you can call size() on an array as if it was a list (as well as isEmpty() and get(int)).