docs: public void addRow(Object[] r) {
  
          Object[] row = new Object[r.length];
  
          // System.arraycopy(r, 0, row, 0, r.length);
          for (int i = 0; i < r.length; i++) {
              row[i] = r[i];
  
              if (row[i] == null) {
  
  //                row[i] = "(null)";
              }
          }
  
          rows.addElement(row);
      }