docs: public boolean write(DataOutputStream daOut, boolean bFixedLength)
      {
          try   {
              Integer inData = (Integer)this.getData();
              int iData;
              if (inData == null)
                  iData = NAN;
              else
                  iData = inData.intValue();
              daOut.writeInt(iData);
              return true;
          } catch (IOException ex)    {
              ex.printStackTrace();
              return false;
          }
      }