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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. import java.time.* ;
  8. import java.time.format.* ;
  9. import java.time.temporal.* ;
  10. import java.util.concurrent.TimeUnit ;
  11.  
  12.  
  13. /* Name of the class has to be "Main" only if the class is public. */
  14. class Ideone
  15. {
  16. public static void main (String[] args) throws java.lang.Exception
  17. {
  18. Duration d1 = Duration.ofHours( 1 ).plusMinutes( 23 ).plusSeconds( 45 ).plusMillis( 678 );
  19. String output1 = d1.toString() ;
  20. long milliseconds = d1.toMillis() ;
  21.  
  22. System.out.println( "output1: " + output1 ) ;
  23. System.out.println( "d.toMillis(): " + milliseconds ) ;
  24.  
  25. //--------------------
  26.  
  27. Duration d = Duration.ofMillis( 5_025_678L ) ;
  28. String output = d.toHoursPart() + ":" + d.toMinutesPart() + ":" + d.toSecondsPart() + "." + TimeUnit.NANOSECONDS.toMillis( d.toNanosPart() ) ;
  29.  
  30. System.out.println( "output: " + output ) ;
  31.  
  32. //-------------------
  33.  
  34. Duration d3 = Duration.ofMillis( 5_025_678L ) ;
  35. long nanoOfDay = d3.toNanos() ;
  36. LocalTime localTimeBogus = LocalTime.ofNanoOfDay( nanoOfDay ) ;
  37. String output3 = localTimeBogus.toString() ;
  38.  
  39. System.out.println( "output3: " + output3 ) ;
  40.  
  41. }
  42. }
Success #stdin #stdout 0.15s 38392KB
stdin
Standard input is empty
stdout
output1: PT1H23M45.678S
d.toMillis(): 5025678
output: 1:23:45.678
output3: 01:23:45.678