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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.util.stream.*;
  5.  
  6. /* Name of the class has to be "Main" only if the class is public. */
  7. class Ideone
  8. {
  9. 	public enum UserSkills {
  10.  
  11. 	    HARD_WORKNG("HARD_WORKNG"),
  12. 	    ON_TIME("ON_TIME"),
  13. 	    HONEST("HONEST");
  14.  
  15. 	    public final String value;
  16.  
  17. 	    UserSkills(String value) {
  18. 	        this.value = value;
  19. 	    }
  20.  
  21. 	    @Override
  22. 	    public String toString() {
  23. 	        return name() + "[" + value + "]";
  24. 	    }
  25.  
  26. 		public static List<UserSkills> of (String ... userSkills) {
  27. 		    List<UserSkills> result = Arrays.stream(userSkills)
  28. 		        .filter(Objects::nonNull)
  29. 		        .map(UserSkills::valueOf)
  30. 		        .distinct()
  31. 		        .collect(Collectors.toList());
  32.  
  33. 		    if (result.size() > 2) {
  34. 		        throw new IllegalArgumentException("Only 2 skills can be selected");
  35. 		    }
  36. 		    return result;
  37. 		}
  38. 	}
  39.  
  40.     public static void main(String args[]) {
  41. 		List<UserSkills> skills = UserSkills.of(null, "HARD_WORKNG", "HONEST", "HARD_WORKNG");
  42. 		System.out.println(skills);
  43.     }
  44. }
  45.  
Success #stdin #stdout 0.14s 50956KB
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[HARD_WORKNG[HARD_WORKNG], HONEST[HONEST]]
https://ideone.com/Mv1s5g
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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