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  1. import java.time.LocalDate;
  2. import java.time.Year;
  3. import java.util.List;
  4. import java.util.stream.Collectors;
  5.  
  6. public class Main {
  7. 	public static void main(String[] args) {
  8. 		List<String> dates = List.of("2012-05-16", "2012-05-18", "2012-06-19", "2013-01-18", "2013-01-10", "2013-08-05",
  9. 				"2010-07-10");
  10.  
  11. 		List<Integer> yearsIntList = 
  12.                 dates.stream()
  13.                 .map(LocalDate::parse).map(d -> d.getYear())
  14.                 .collect(Collectors.toList());
  15.  
  16.         List<String> yearsStrList = 
  17.                 dates.stream()
  18.                 .map(LocalDate::parse)
  19.                 .map(d -> String.valueOf(d.getYear()))
  20.                 .collect(Collectors.toList());
  21.  
  22.         List<Year> yearsYearList = 
  23.                 dates.stream()
  24.                 .map(LocalDate::parse)
  25.                 .map(d -> Year.of(d.getYear()))
  26.                 .collect(Collectors.toList());
  27.  
  28. 		System.out.println(yearsIntList);
  29. 		System.out.println(yearsStrList);
  30. 		System.out.println(yearsYearList);
  31. 	}
  32. }
Success #stdin #stdout 0.11s 49644KB
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[2012, 2012, 2012, 2013, 2013, 2013, 2010]
[2012, 2012, 2012, 2013, 2013, 2013, 2010]
[2012, 2012, 2012, 2013, 2013, 2013, 2010]
https://ideone.com/WY1uSK
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

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