How will I write this class with this following interface?

Provided interface: public interface TimeKeeper //resets seconds to 0 void reset ) void addToSeconds string displayTime //adds 0.01 seconds to seconds. I/returns the formatted time in hours and minutes to 2 d.p Write a class Watch that implements this interface. It must have an instance variable seconds of type double andcostructor that to the value of is int argument The methods of the interface must be implemented as per the comments above. As an example, if the time in seconds is 3400.21 then displayTime () should return: The timer says: 0 hrs 56.67 mins The format of the string returned by displayTime () should be precisely as in the example above (but there is no initial space in the string). Hint: Use the string!. format () method