DataItem

class DataItem
   {
   public long dData;          // one data item
//--------------------------------------------------------------
   public DataItem(long dd)    // constructor
      { dData = dd; }
//--------------------------------------------------------------
   // displays data. ie, inserting 27, 36, 32 into node would look like /27/36/32/
   public void displayItem()   // display item, format "/27"
      { System.out.print("/"+dData); }
//--------------------------------------------------------------
   }  // end class DataItem