[Belisarius]

Here's how I would do it:

public static String ucFirst(String strText){
  if(strText == null || strText.length() == 0){
    return "";
  }

  StringTokenizer toks = new StringTokenizer(strText);
  StringBuffer output = new StringBuffer();
  while(toks.hasMoreTokens()){
    String word = toks.nextToken();
    output.append(word.substring(0,1).toUpperCase());
    if(word.length() > 1){
      output.append(word.substring(1).toLowerCase());
    }
    output.append(" ");
  }

  return output.toString();
}

Hopefully you're not worried about instances where you might want a capitalize letter in the middle of the word, like DuPont.