Most idiomatic way to print a time difference in Java?
code-formatting, datetime, idioms, java
Solution
Apache Commons has the DurationFormatUtils class for applying a specified format to a time duration. So, something like:
long time = System.currentTimeMillis();
//do something that takes some time...
long completedIn = System.currentTimeMillis() - time;
DurationFormatUtils.formatDuration(completedIn, "HH:mm:ss:SS");
Problem
I'm familiar with printing time difference in milliseconds: ``` long time = System.currentTimeMillis(); //do something that takes some time... long completedIn = System.currentTimeMillis() - time; ``` But, is there a nice way print a complete time in a specified format (eg: HH:MM:SS) either using Apache Commons or even the dreaded platform API's Date/Time objects? In other words, what is the shortest, simplest, no nonsense way to write a time format derived from milliseconds in Java?