Hash set task 5

src/com/school/faang/hashset/задача_5/GameLobby.java

@@ -0,0 +1,30 @@
+package com.school.faang.hashset.задача_5;
+
+import java.util.Set;
+import java.util.HashSet;
+import java.util.LinkedHashSet;
+
+public class GameLobby {
+
+    private final Set<Player> players;
+
+    public GameLobby() {
+        players = new LinkedHashSet<>();
+    }
+
+    public void addPlayer(String nickname) {
+        players.add(new Player(nickname));
+    }
+
+    public void removePlayer(String nickname) {
+        players.remove(new Player(nickname));
+    }
+
+    public boolean hasPlayer(String nickname) {
+        return players.contains(new Player(nickname));
+    }
+
+    public void displayPlayers() {
+        players.forEach(System.out::println);
+    }
+}

src/com/school/faang/hashset/задача_5/Player.java

@@ -0,0 +1,47 @@
+package com.school.faang.hashset.задача_5;
+
+import java.util.Objects;
+
+public class Player {
+
+    private final String nickname;
+    private String status;
+
+    public Player(String nickname) {
+        this.nickname = nickname;
+        status = "unready";
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        if (!(status.equals("ready") || status.equals("unready"))) {
+            throw new IllegalArgumentException("Bad status");
+        }
+        this.status = status;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(nickname);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof Player)) {
+            return false;
+        }
+        return this.nickname.equals(((Player) obj).nickname);
+    }
+
+    @Override
+    public String toString() {
+        return nickname;
+    }
+}

src/com/school/faang/hashset/задача_5/Solution.java

@@ -2,6 +2,15 @@
 
 public class Solution {
     public static void main(String[] args) {
-
+        GameLobby gameLobby = new GameLobby();
+        gameLobby.addPlayer("Vladik1997");
+        gameLobby.addPlayer("MichsSS");
+        gameLobby.addPlayer("VladMishustin");
+        gameLobby.addPlayer("VladMishustin");
+        System.out.println(gameLobby.hasPlayer("Vladik1997"));
+        gameLobby.displayPlayers();
+        gameLobby.removePlayer("Vladik1997");
+        System.out.println(gameLobby.hasPlayer("Vladik1997"));
+        gameLobby.displayPlayers();
     }
 }