Fix server startup error, and spacing.

.github/workflows/github-ci.yml

@@ -1,25 +1,25 @@
 name: ci
 on:
-    # Trigger the workflow on push or pull request,
-    # but only for the main branch
-    push:
-        branches:
-            - main
-    pull_request:
-        branches:
-            - main
+  # Trigger the workflow on push or pull request,
+  # but only for the main branch
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 jobs:
-    ci:
-        runs-on: ubuntu-latest
-        steps:
-            - uses: actions/checkout@v4
-            - uses: actions/setup-java@v4
-              with:
-                  distribution: zulu
-                  java-version: 21
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: zulu
+          java-version: 21
 
-            - name: Setup Gradle
-              uses: gradle/gradle-build-action@v2
+      - name: Setup Gradle
+        uses: gradle/gradle-build-action@v2
 
-            - name: Execute Gradle build
-              run: ./gradlew build
+      - name: Execute Gradle build
+        run: ./gradlew build

build.gradle.kts

@@ -4,13 +4,18 @@ version = "1.0-SNAPSHOT"
 plugins {
     java
     checkstyle
+    application
 }
 
 java {
     sourceCompatibility = JavaVersion.VERSION_21
     targetCompatibility = JavaVersion.VERSION_21
 }
 
+application {
+    mainClass.set("game.GameServer")
+}
+
 val checkstyleConfig: Configuration by configurations.creating
 dependencies {
     checkstyleConfig("com.puppycrawl.tools:checkstyle:9.3") {
@@ -42,6 +47,8 @@ dependencies {
     implementation("com.fasterxml.jackson.core:jackson-core:2.16.1")
     implementation("com.fasterxml.jackson.core:jackson-annotations:2.16.1")
     implementation("com.fasterxml.jackson.core:jackson-databind:2.16.1")
+    implementation("org.slf4j:slf4j-api:2.0.11")
+    implementation("ch.qos.logback:logback-core:1.4.14")
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.10.1")
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.10.1")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.10.1")

config/checkstyle/checkstyle-suppressions.xml

@@ -1,14 +1,14 @@
 <?xml version="1.0"?>
 
 <!DOCTYPE suppressions PUBLIC
-     "-//Puppy Crawl//DTD Suppressions 1.0//EN"
-     "http://www.puppycrawl.com/dtds/suppressions_1_0.dtd">
+        "-//Puppy Crawl//DTD Suppressions 1.0//EN"
+        "http://www.puppycrawl.com/dtds/suppressions_1_0.dtd">
 
 <suppressions>
-  <suppress files="." checks="JavadocType"/>
-  <suppress files="." checks="JavadocMethod"/>
-  <suppress files="." checks="JavadocPackage"/>
-  <suppress files="." checks="JavadocVariable"/>
-  <suppress files="." checks="MissingJavadocMethod"/>
-  <suppress files="." checks="JavadocPackage"/>
+    <suppress files="." checks="JavadocType"/>
+    <suppress files="." checks="JavadocMethod"/>
+    <suppress files="." checks="JavadocPackage"/>
+    <suppress files="." checks="JavadocVariable"/>
+    <suppress files="." checks="MissingJavadocMethod"/>
+    <suppress files="." checks="JavadocPackage"/>
 </suppressions>