How to convert column value to CamelCase with Oracle?

I guess a combination of initcap() and replace() would work:

select replace(initcap('hi ben'),' ') from dual;

REPLA
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HiBen

This simply capitalises the first character of every word and then replaces the spaces with nothing.

It obviously won't work if the first character is numeric:

select replace(initcap('go 2stack overflow'),' ') from dual;

REPLACE(INITCAP(
----------------
Go2stackOverflow

That's not my understanding of camelCase

select substr(lower('Camel Case means the first char should be lower cased'),1,1)||substr(replace(initcap('Camel Case means the first char should be lower cased'),' '),2) from dual;

camelCaseMeansTheFirstCharShouldBeLowerCased                                    
1 row selected.