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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.util.stream.* ;
  8.  
  9. /* Name of the class has to be "Main" only if the class is public. */
  10. class Ideone
  11. {
  12. 	public static void main (String[] args) throws java.lang.Exception
  13. 	{
  14.         // Populate
  15.  
  16.         Team alphaTeam = new Team(
  17.                 UUID.fromString(  "b4c94867-8ac7-4caf-bf49-b79df92cff82" ) ,
  18.                 "Alpha",
  19.                 List.of(
  20.                         new Member(
  21.                                 1 ,
  22.                                 "Alice",
  23.                                 Member.Status.ACTIVE
  24.                         ),
  25.                         new Member(
  26.                                 2 ,
  27.                                 "Bob",
  28.                                 Member.Status.ACTIVE
  29.                         )
  30.                 )
  31.         );
  32.  
  33.         Team betaTeam = new Team(
  34.                 UUID.fromString(  "9d12160a-94cc-45c6-a465-12cdf3d1a503" ) ,
  35.                 "Beta",
  36.                 List.of(
  37.                         new Member(
  38.                                 3,
  39.                                 "Carol",
  40.                                 Member.Status.INACTIVE
  41.                         ),
  42.                         new Member(
  43.                                 4,
  44.                                 "Davis",
  45.                                 Member.Status.ACTIVE
  46.                         )
  47.                 )
  48.         );
  49.  
  50.         Team gammaTeam = new Team(
  51.                 UUID.fromString(  "f440ac2d-9175-47d8-a5e2-3102e0d162bc" ) ,
  52.                 "Gamma",
  53.                 List.of(
  54.                         new Member(
  55.                                 5 ,
  56.                                 "Ernestine",
  57.                                 Member.Status.ACTIVE
  58.                         ),
  59.                         new Member(
  60.                                 6 ,
  61.                                 "Frank",
  62.                                 Member.Status.ACTIVE
  63.                         )
  64.                 )
  65.         );
  66.  
  67.         List < Team > teams = List.of( alphaTeam , betaTeam , gammaTeam );
  68.  
  69.         // Report
  70.         List<Team> teamsWhoseMembershipIsEntirelyActive =
  71.                 teams
  72.                         .stream()
  73.                         .filter(
  74.                                 team -> team.memberList().stream().allMatch( member -> member.status().equals( Member.Status.ACTIVE ) )
  75.                         )
  76.                         .collect( Collectors.toList() );
  77.         ;
  78.  
  79.         System.out.println( "teamsWhoseMembershipIsEntirelyActive = " + teamsWhoseMembershipIsEntirelyActive );
  80. 	}
  81. }
  82.  
  83. final class Member {
  84.     private final int id;
  85.     private final String name;
  86.     private final Status status;
  87.  
  88.     public Member ( int id , String name , Status status ) {
  89.         this.id = id;
  90.         this.name = name;
  91.         this.status = status;
  92.     }
  93.  
  94.     public int id () { return id; }
  95.  
  96.     public String name () { return name; }
  97.  
  98.     public Status status () { return status; }
  99.  
  100.     @Override
  101.     public boolean equals ( Object obj ) {
  102.         if ( obj == this ) return true;
  103.         if ( obj == null || obj.getClass() != this.getClass() ) return false;
  104.         var that = ( Member ) obj;
  105.         return this.id == that.id && Objects.equals( this.name , that.name ) && Objects.equals( this.status , that.status );
  106.     }
  107.  
  108.     @Override
  109.     public int hashCode () {
  110.         return Objects.hash( id , name , status );
  111.     }
  112.  
  113.     @Override
  114.     public String toString () {
  115.         return "Member[" + "id=" + id + ", " + "name=" + name + ", " + "status=" + status + ']';
  116.     }
  117.  
  118.     public enum Status {
  119.         ACTIVE,
  120.         INACTIVE,
  121.         UNKNOWN
  122.     }
  123. }
  124.  
  125.  
  126. final class Team {
  127.     private final UUID id;
  128.     private final String name;
  129.     private final List < Member > memberList;
  130.  
  131.     public Team ( UUID id , String name , List < Member > memberList ) {
  132.         this.id = id;
  133.         this.name = name;
  134.         this.memberList = memberList;
  135.     }
  136.  
  137.     public UUID id () { return id; }
  138.  
  139.     public String name () { return name; }
  140.  
  141.     public List < Member > memberList () { return memberList; }
  142.  
  143.     @Override
  144.     public boolean equals ( Object obj ) {
  145.         if ( obj == this ) return true;
  146.         if ( obj == null || obj.getClass() != this.getClass() ) return false;
  147.         var that = ( Team ) obj;
  148.         return Objects.equals( this.id , that.id ) && Objects.equals( this.name , that.name ) && Objects.equals( this.memberList , that.memberList );
  149.     }
  150.  
  151.     @Override
  152.     public int hashCode () {
  153.         return Objects.hash( id , name , memberList );
  154.     }
  155.  
  156.     @Override
  157.     public String toString () {
  158.         return "Team[" + "id=" + id + ", " + "name=" + name + ", " + "memberList=" + memberList + ']';
  159.     }
  160. }
  161.  
Success #stdin #stdout 0.22s 56288KB
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teamsWhoseMembershipIsEntirelyActive = [Team[id=b4c94867-8ac7-4caf-bf49-b79df92cff82, name=Alpha, memberList=[Member[id=1, name=Alice, status=ACTIVE], Member[id=2, name=Bob, status=ACTIVE]]], Team[id=f440ac2d-9175-47d8-a5e2-3102e0d162bc, name=Gamma, memberList=[Member[id=5, name=Ernestine, status=ACTIVE], Member[id=6, name=Frank, status=ACTIVE]]]]
https://ideone.com/b6gkMj
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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