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

The following method should handle the task quite efficient in O(n). We just iterate over the characters of the xml method name, skip any '-' and capitalize chars if needed.

public static String toJavaMethodName(String xmlmethodName) { 
  StringBuilder nameBuilder = new StringBuilder(xmlmethodName.length());    
  boolean capitalizeNextChar = false;

  for (char c:xmlMethodName.toCharArray()) {
    if (c == '-') {
      capitalizeNextChar = true;
      continue;
    }
    if (capitalizeNextChar) {
      nameBuilder.append(Character.toUpperCase(c));
    } else {
      nameBuilder.append(c);
    }
    capitalizeNextChar = false;
  }
  return nameBuilder.toString();
}