Format Date
Create a class named Formatter
.
Formatter
should provide one public class method formatDate
.
It should accept a positive long representing milliseconds since 1970 and return a String
containing the ISO-8601
representation of this time. Here is one example for a recent timestamp: given 1602106609897 your function should
return 2020-10-07T21:36:49.897Z.
Do not overthink this. The solution we are after is a single line of code. We suggest that you explore the various built-in Java libraries for working with dates and times.