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Thread: How do I print a double to 2 significant figures?

  1. #1
    Junior Member
    Join Date
    Aug 2017
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    Default How do I print a double to 2 significant figures?

    In my toString I'm trying to print the total cost as $9.30. It is printing as $9.3 - without the 0 on the end.

    This looks like:

    public String toString()
         return "$"+total;

    However my "total" variable must be of type double, I've tried casting it with (float)total which hasn't worked. Do I need to save total into a float variable out of the toString or is there another way I can get it to appear as $9.30

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,465 Times in 2,416 Posts

    Default Re: How do I print a double to 2 significant figures?

    See the Formatter class for useful method to format a numeric value as you want to see it.
    If you don't understand my answer, don't ignore it, ask a question.

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