private StringTextStore(String text){
  super();
  fText=text != null ? text : "";
  fCopyLimit=fText.length() > SMALL_TEXT_LIMIT ? fText.length() / 2 : 0;
}

private StringTextStore ( String text ) { super ( ) ; fText = text != null ? text : "" ; fCopyLimit = fText . length ( ) > SMALL_TEXT_LIMIT ? fText . length ( ) / 2 : 0 ; }
create a text store with initial content .
