src.put (toPut);
put (toPut);
  public DoubleBuffer put (DoubleBuffer src)  {    if (src == this)      throw new IllegalArgumentException ();    checkForOverflow(src.remaining ());    if (src.remaining () > 0)      {        double[] toPut = new double [src.remaining ()];        src.get (toPut);        src.put (toPut);      }    return this;  }