What is the most elegant way to convert a hyphen separated word (e.g. “do-some-stuff”) to the lower camel-case variation (e.g. “doSomeStuff”)?

Question

What is the most elegant way to convert a hyphen separated word (e.g. \"do-some-stuff\") to the lower camel-case variation (e.g. \"doSomeStuff\") in Java?

Answer 1

If you don't like to depend on a library you can use a combination of a regex and String.format. Use a regex to extract the starting characters after the -. Use these as input for String.format. A bit tricky, but works without a (explizit) loop ;).

public class Test {

    public static void main(String[] args) {
        System.out.println(convert("do-some-stuff"));
    }

    private static String convert(String input) {
        return String.format(input.replaceAll("\\-(.)", "%S"), input.replaceAll("[^-]*-(.)[^-]*", "$1-").split("-"));
    }

}