fix: checkstyle.

HMCL/src/main/java/org/jackhuang/hmcl/ui/multiplayer/MultiplayerManager.java

@@ -36,7 +36,6 @@ import java.net.ServerSocket;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Base64;
 import java.util.List;

HMCL/src/main/java/org/jackhuang/hmcl/ui/multiplayer/MultiplayerServer.java

@@ -29,7 +29,6 @@ import java.net.Socket;
 
 public class MultiplayerServer {
     private ServerSocket socket;
-    private Thread thread;
     private final int gamePort;
 
     public MultiplayerServer(int gamePort) {
@@ -59,8 +58,7 @@ public class MultiplayerServer {
                 Socket clientSocket = socket.accept();
                 Lang.thread(() -> handleClient(clientSocket), "MultiplayerServerClientThread", true);
             }
-        } catch (IOException e) {
-
+        } catch (IOException ignored) {
         }
     }
 
@@ -73,8 +71,7 @@ public class MultiplayerServer {
                 Request request = JsonUtils.fromNonNullJson(line, Request.class);
                 request.process(this, writer);
             }
-        } catch (IOException | JsonParseException e) {
-
+        } catch (IOException | JsonParseException ignored) {
         }
     }
 

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/GameListPage.java

@@ -22,7 +22,6 @@ import javafx.beans.property.*;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.scene.Node;
-import javafx.scene.control.Control;
 import javafx.scene.control.ScrollPane;
 import javafx.scene.control.SkinBase;
 import javafx.scene.control.ToggleGroup;

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -563,6 +563,7 @@ multiplayer.session.copy_room_code=Copy Invitation Code
 multiplayer.session.create=Create Room
 multiplayer.session.create.error=Failed to create multiplayer room.
 multiplayer.session.create.hint=Before creating multiplayer room, you must click "Open LAN Server" in running game, and type the port displayed in game in the blank below.
+multiplayer.session.create.name=Session Name
 multiplayer.session.create.port=Port
 multiplayer.session.create.port.error=Cannot detect game port, you must click "Open LAN Server" in game to enable multiplayer functionality.
 multiplayer.session.expired=Multiplayer session has expired. You should re-create or re-join a room to continue.

HMCL/src/main/resources/assets/lang/I18N_zh.properties

@@ -563,6 +563,7 @@ multiplayer.session.copy_room_code=複製邀請碼
 multiplayer.session.create=創建房間
 multiplayer.session.create.error=創建聯機房間失敗。
 multiplayer.session.create.hint=創建聯機房間前，你需要先在正在運行的遊戲內的遊戲菜單中選擇 對區域網路開放 選項，然後在下方的輸入框中輸入遊戲內提示的埠號（通常是 5 位的數字）
+multiplayer.session.create.name=房間名稱
 multiplayer.session.create.port=埠號
 multiplayer.session.create.port.error=無法檢測遊戲埠號，你必須先啟動遊戲並在遊戲內打開對區域網路開放選項後才能啟動聯機。
 multiplayer.session.expired=聯機會話連續使用時間超過了 3 小時，你需要重新創建/加入房間以繼續聯機。

HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java

@@ -35,7 +35,6 @@ import org.jetbrains.annotations.Nullable;
 
 import java.util.*;
 import java.util.concurrent.Callable;
-import java.util.concurrent.CancellationException;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Executor;
 import java.util.function.Consumer;