Convert java underscore naming to camel case naming

public static String buildCapitalName(String source) {
	if(source == null) {
		return "";
	}
	char[] chars = source.toCharArray();
	for (int i = 0; i < chars.length; i++) {
		if(chars[i] == '_'){
			chars[i+1] = Character.toUpperCase(chars[i+1]);
		}
	}
	return new String(chars).replace("_", "");
}