Lowercase first letter in Apache Velocity

Question

I've got this code, which converts "dotted" string to camelCase in WebStorm File Template:

#set($Controller_name = ${StringUtils.removeAndHump(${NAME}, ".")})

For example it converts foo.bar.test to FooBarTest.

But what I need is to convert it from foo.bar.test to fooBarTest.

How can I do that?

Same approach (possibly trough intermediate variable(s)): get first letter of your `FooBarTest` and make it lower case; now concatenate it with other letters in that string (unless, of course, there is Java method that can upper case only first letter in a string). — LazyOne, Nov 10 '15 at 09:07
Since I'm not a velocity expert by any means .. I may offer only this ugly code: 1) `#set($first_letter = $controller.substring(0,1).toLowerCase())` 2) `#set($the_rest = $controller.substring(1))` 3) `class Controller_${first_letter}${the_rest}`. You should be able to reduce the number of lines to 2 or even 1... — LazyOne, Nov 10 '15 at 09:10

score 38 · Accepted Answer · edited Feb 21 '20 at 10:18

This is what finally worked for me:

#set($Controller_name = ${StringUtils.removeAndHump(${NAME}, ".")})
#set($first_letter = $Controller_name.substring(0,1).toLowerCase())
#set($the_rest = $Controller_name.substring(1))
#set($Controller_name = ${first_letter} + ${the_rest})

It could be shortened to:

#set($Controller_name = ${StringUtils.removeAndHump(${NAME}, ".")})
#set($Controller_name = $Controller_name.substring(0,1).toLowerCase() + $Controller_name.substring(1))

Thanks @LazyOne for pointing me in the right direction.

Lowercase first letter in Apache Velocity

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