Wrapper.java

public class Wrapper {
  public static String wrap(String s, int col) {
    if (s.length() <= col)
      return s;
    else {
      int lastSpace = 0;
      int space;
      while ((space = s.indexOf(" ", lastSpace)) != -1) {
        if (space > col) {
          s = s.substring(0, lastSpace) + "\n" + s.substring(lastSpace+1);
          //todo this doesn't look right. 
        }
        lastSpace = space;
      }
      return s; // really?
    }

//     return s.replaceAll(" ", "\n");
  }
}