From 77d9ded3d3e4f02fa108b065ae1d31cab791e541 Mon Sep 17 00:00:00 2001
From: Lars Simon Winzer <lars.winzer@stud.unibas.ch>
Date: Wed, 8 Apr 2026 17:24:26 +0200
Subject: [PATCH] Refactor: Change CommandHandler implementations to extend the
 abstract class

---
 .../server/app/commands/check_nick/CheckUsernameHandler.java    | 2 +-
 .../cs108/casono/server/app/commands/login/LoginHandler.java    | 2 +-
 .../cs108/casono/server/app/commands/logout/LogoutHandler.java  | 2 +-
 .../dbis/cs108/casono/server/app/commands/ping/PingHandler.java | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
index c238ba1..95debb0 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
@@ -7,7 +7,7 @@ import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.dispatch
 import java.util.Optional;
 
 /** Handles {@link CheckUsernameRequest}s to check whether a username is available. */
-public class CheckUsernameHandler implements CommandHandler<CheckUsernameRequest> {
+public class CheckUsernameHandler extends CommandHandler<CheckUsernameRequest> {
     private final ResponseDispatcher responseDispatcher;
     private final UserRegistry userRegistry;
 
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java
index 5d139f8..4215b3b 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/login/LoginHandler.java
@@ -13,7 +13,7 @@ import java.util.Optional;
  * Handles {@link LoginRequest}s to create a user for a session, if the session has not assigned one
  * already
  */
-public class LoginHandler implements CommandHandler<LoginRequest> {
+public class LoginHandler extends CommandHandler<LoginRequest> {
     private final ResponseDispatcher responseDispatcher;
     private final UserRegistry userRegistry;
     private final UserFactory userFactory;
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java
index c5ca9fd..4ef9f98 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/logout/LogoutHandler.java
@@ -7,7 +7,7 @@ import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.OkRespon
 import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.dispatcher.ResponseDispatcher;
 
 /** Handles {@link LogoutRequest} to logout connected user. */
-public class LogoutHandler implements CommandHandler<LogoutRequest> {
+public class LogoutHandler extends CommandHandler<LogoutRequest> {
     private final ResponseDispatcher responseDispatcher;
     private final UserRegistry userRegistry;
 
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java
index 1669cd8..aed42e5 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/ping/PingHandler.java
@@ -5,7 +5,7 @@ import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.OkRespon
 import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.dispatcher.ResponseDispatcher;
 
 /** Handler for {@link PingRequest}. */
-public class PingHandler implements CommandHandler<PingRequest> {
+public class PingHandler extends CommandHandler<PingRequest> {
     private final ResponseDispatcher responseDispatcher;
 
     /**