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  1. import java.time.LocalDate;
  2. import java.time.format.DateTimeFormatter;
  3. import java.util.ArrayList;
  4. import java.util.Arrays;
  5. import java.util.Comparator;
  6. import java.util.List;
  7. import java.util.function.Function;
  8. import java.util.stream.Collectors;
  9.  
  10. public class Main {
  11. 	public static void main(String[] args) throws Exception {
  12. 		List<NotificationCnavOP> notificationCnavOPList = new ArrayList<>(
  13. 				Arrays.asList(
  14. 						new NotificationCnavOP(1, "01/01/2000", 1), 
  15. 						new NotificationCnavOP(2, "01/01/2001", 2),
  16. 						new NotificationCnavOP(2, "01/01/2002", 3), 
  17. 						new NotificationCnavOP(2, "01/01/2001", 2)));
  18.  
  19. 		List<NotificationCnavOP> result = 
  20. 				notificationCnavOPList
  21. 				.stream()
  22. 				.sorted(Comparator.comparing(NotificationCnavOP::getId)
  23. 						.thenComparing(e -> LocalDate.parse(e.getDate(), DateTimeFormatter.ofPattern("dd/MM/yyyy")))
  24. 						.thenComparing(NotificationCnavOP::getCxalap))
  25. 				.collect(Collectors.toMap(NotificationCnavOP::getId, Function.identity(), (e1, e2) -> e1))
  26. 				.values()
  27. 				.stream()
  28. 				.collect(Collectors.toList());
  29.  
  30. 		System.out.println(result);
  31. 	}
  32. }
  33.  
  34. class NotificationCnavOP {
  35. 	private int id;
  36. 	private String date;
  37. 	private int cxalap;
  38.  
  39. 	public NotificationCnavOP(int id, String date, int cxalap) {
  40. 		this.id = id;
  41. 		this.date = date;
  42. 		this.cxalap = cxalap;
  43. 	}
  44.  
  45. 	public int getId() {
  46. 		return id;
  47. 	}
  48.  
  49. 	public String getDate() {
  50. 		return date;
  51. 	}
  52.  
  53. 	public int getCxalap() {
  54. 		return cxalap;
  55. 	}
  56.  
  57. 	@Override
  58. 	public String toString() {
  59. 		return "[" + id + ", " + date + ", " + cxalap + "]";
  60. 	}
  61. }
Success #stdin #stdout 0.2s 56916KB
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[[1, 01/01/2000, 1], [2, 01/01/2001, 2]]
https://ideone.com/rFAR6H
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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