Java convert double to date format

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不知归路
不知归路 2021-01-26 16:16

I have made a little app in ios+firebase, now I am trying to connect android. In ios I save date as double (for example: -242528463.775282), but then I trying to retrieve same d

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  •  滥情空心
    2021-01-26 16:42

    Have a play around with statements below. In particular; long myLong = todate.getTime();
    and store this to interpret later perhaps?

    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    public class dateConvertDouble {
    
        public static void main(String[] args) {
            Date todate = new Date();
            System.out.println(todate);
    
            long myLong = todate.getTime();
            System.out.println(myLong);
    
            double myDouble = (double)myLong;
            System.out.println(myDouble);
    
            String myDateStr = new SimpleDateFormat("dd-MM-yyyy").format(myLong);             
            System.out.println(myDateStr);
    
        }
    }
    

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