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

Why not try this:

1. split on "-"
2. uppercase each word, skipping the first
3. join

EDIT: On second thoughts... While trying to implement this, I found out there is no simple way to join a list of strings in Java. Unless you use StringUtil from apache. So you will need to create a StringBuilder anyway and thus the algorithm is going to get a little ugly :(

CODE: Here is a sample of the above mentioned aproach. Could someone with a Java compiler (sorry, don't have one handy) test this? And benchmark it with other versions found here?

public static String toJavaMethodNameWithSplits(String xmlMethodName)
{
    String[] words = xmlMethodName.split("-"); // split on "-"
    StringBuilder nameBuilder = new StringBuilder(xmlMethodName.length());
    nameBuilder.append(words[0]);
    for (int i = 1; i < words.length; i++) // skip first
    {
        nameBuilder.append(words[i].substring(0, 1).toUpperCase());
        nameBuilder.append(words[i].substring(1));
    }
    return nameBuilder.toString(); // join
}