Best way to Format a Double value to 2 Decimal places

No, there is no better way.

Actually you have an error in your pattern. What you want is:

DecimalFormat df = new DecimalFormat("#.00");

Note the "00", meaning exactly two decimal places.

If you use "#.##" (# means “optional” digit), it will drop trailing zeroes – ie new DecimalFormat("#.##").format(3.0d); prints just "3", not "3.00".

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