public static String wrap(String str,int wrapTextLength){
  if (wrapTextLength <= 0)   return str;
  StringBuilder rtn=new StringBuilder();
  String ls=SystemUtil.getOSSpecificLineSeparator();
  Array arr=ListUtil.listToArray(str,ls);
  int len=arr.size();
  for (int i=1; i <= len; i++) {
    rtn.append(wrapLine(Caster.toString(arr.get(i,""),""),wrapTextLength));
    if (i + 1 < len)     rtn.append(ls);
  }
  return rtn.toString();
}

public static String wrap ( String str , int wrapTextLength ) { if ( wrapTextLength <= 0 ) return str ; StringBuilder rtn = new StringBuilder ( ) ; String ls = SystemUtil . getOSSpecificLineSeparator ( ) ; Array arr = ListUtil . listToArray ( str , ls ) ; int len = arr . size ( ) ; for ( int i = 1 ; i <= len ; i ++ ) { rtn . append ( wrapLine ( Caster . toString ( arr . get ( i , "" ) , "" ) , wrapTextLength ) ) ; if ( i + 1 < len ) rtn . append ( ls ) ; } return rtn . toString ( ) ; }
wraps a string to specified length
