GH-801 Java 21 and Minecraft 1.21 support (#801)

* Prepare for Java 21 and MC 1.21

* Prepare for Java 21 and MC 1.21

* Update gradle.properties

Author: Jakubk15

buildSrc/build.gradle.kts

@@ -8,7 +8,7 @@ repositories {
 
 dependencies {
     implementation("net.kyori:blossom:1.3.1")
-    implementation("com.github.johnrengelman:shadow:8.1.1")
+    implementation("io.github.goooler.shadow:shadow-gradle-plugin:8.1.7")
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:2.0.0")
     implementation("net.minecrell:plugin-yml:0.6.0")
 }

buildSrc/src/main/kotlin/eternalcode-java.gradle.kts

@@ -29,10 +29,11 @@ configurations.named("checkstyle") {
 
 
 java {
-    toolchain.languageVersion.set(JavaLanguageVersion.of(17))
+    toolchain.languageVersion.set(JavaLanguageVersion.of(21))
 }
 
 tasks.withType<JavaCompile>() {
     options.compilerArgs = listOf("-Xlint:deprecation", "-parameters")
     options.encoding = "UTF-8"
+    options.release = 17
 }

buildSrc/src/main/kotlin/eternalcore-shadow-compiler.gradle.kts

@@ -8,7 +8,7 @@ afterEvaluate {
 plugins {
     `java-library`
     id("net.kyori.blossom")
-    id("com.github.johnrengelman.shadow")
+    id("io.github.goooler.shadow")
     id("net.minecrell.plugin-yml.bukkit")
 }
 

buildSrc/src/main/kotlin/eternalcore-shadow.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
     `java-library`
 
-    id("com.github.johnrengelman.shadow")
+    id("io.github.goooler.shadow")
 }
 
 val extension = extensions.create<EternalShadowExtension>("eternalShadow")
@@ -12,4 +12,4 @@ afterEvaluate {
             compileOnlyApi(it)
         }
     }
-}
+}

eternalcore-api-example/build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
     `java-library`
 
-    id("com.github.johnrengelman.shadow")
+    id("io.github.goooler.shadow")
     id("net.minecrell.plugin-yml.bukkit")
     id("xyz.jpenilla.run-paper") version "2.3.0"
 }
@@ -40,7 +40,7 @@ bukkit {
 }
 
 java {
-    toolchain.languageVersion.set(JavaLanguageVersion.of(17))
+    toolchain.languageVersion.set(JavaLanguageVersion.of(21))
 }
 
 tasks.withType<JavaCompile> {

eternalcore-core/src/main/java/com/eternalcode/core/EternalCoreEnvironment.java

@@ -26,7 +26,7 @@ private void checkSoftware() {
         Environment environment = PaperLib.getEnvironment();
 
         if (!environment.isSpigot()) {
-            this.logger.warning("Your server running on unsupported software, please use Spigot/Paper or their other 1.20+ forks");
+            this.logger.warning("Your server is running on unsupported software, please use Spigot/Paper or their other 1.20+ forks");
             this.logger.warning("We recommend using Paper, download it from https://papermc.io/downloads");
             this.logger.warning("WARNING: Supported Minecraft versions are 1.17-1.20x");
             return;
@@ -37,7 +37,7 @@ private void checkSoftware() {
             return;
         }
 
-        this.logger.info("Your server running on supported software, congratulations!");
+        this.logger.info("Your server is running on supported software, congratulations!");
         this.logger.info("Server version: " + environment.getMinecraftVersion());
     }
 

eternalcore-core/src/main/java/com/eternalcode/core/util/ReflectUtil.java

@@ -2,6 +2,7 @@
 
 import com.google.common.base.Preconditions;
 import com.google.common.reflect.ClassPath;
+
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.LinkedHashSet;
@@ -37,7 +38,7 @@ public static List<Class<?>> scanClasses(String packageToScan, ClassLoader class
                     loadedClasses.add(clazz);
                 }
                 catch (NoClassDefFoundError ignored) {
-                    LOGGER.severe("Can not load class: " + info.getName());
+                    LOGGER.severe("Unable to load class: " + info.getName());
                 }
             }
 

gradle.properties

@@ -2,4 +2,3 @@
 
 org.gradle.parallel=true
 org.gradle.caching=true
-