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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.temporal.* ;
  9. import java.time.format.* ;
  10.  
  11. /* Name of the class has to be "Main" only if the class is public. */
  12. class Ideone
  13. {
  14. public static void main (String[] args) throws java.lang.Exception
  15. {
  16.  
  17. LocalDate ld = LocalDate.of( 2019 , Month.JANUARY , 1 ) ;
  18. long week = ld.get( WeekFields.ISO.weekOfWeekBasedYear() ) ;
  19.  
  20. System.out.println( "ld.toString(): " + ld ) ;
  21. System.out.println( "week: " + week ) ;
  22. }
  23. }
Success #stdin #stdout 0.13s 2184192KB
stdin
Standard input is empty
stdout
ld.toString(): 2019-01-01
week: 1