Switch to Kotlin and disable projectiles

src/main/kotlin/xyz/lncvrt/galaxycreations/GalaxyCreations.kt

@@ -0,0 +1,19 @@
+package xyz.lncvrt.galaxycreations
+
+import net.kyori.adventure.text.minimessage.MiniMessage
+import org.bukkit.plugin.java.JavaPlugin
+import xyz.lncvrt.galaxycreations.events.PlayerJoinListener
+import xyz.lncvrt.galaxycreations.events.ProjectileLaunchListener
+
+class GalaxyCreations : JavaPlugin() {
+    internal val miniMessage = MiniMessage.miniMessage()
+
+    override fun onEnable() {
+        server.pluginManager.registerEvents(PlayerJoinListener(this), this)
+        server.pluginManager.registerEvents(ProjectileLaunchListener(), this)
+    }
+
+    internal fun setPrefix(message: String): String {
+        return "<gradient:light_purple:dark_purple:light_purple><bold>GalaxyNetwork</gradient> <gray><bold>»</bold></gray> $message"
+    }
+}

src/main/kotlin/xyz/lncvrt/galaxycreations/events/PlayerJoinListener.kt

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+package xyz.lncvrt.galaxycreations.events
+
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.player.PlayerJoinEvent
+import xyz.lncvrt.galaxycreations.GalaxyCreations
+
+class PlayerJoinListener(private val plugin: GalaxyCreations) : Listener {
+    @EventHandler
+    fun onPlayerJoinEvent(event: PlayerJoinEvent) {
+        val player = event.getPlayer()
+        if (!event.getPlayer().hasPlayedBefore()) {
+            player.performCommand("p auto")
+            player.sendMessage(plugin.miniMessage.deserialize(plugin.setPrefix("<light_purple>Welcome to Galaxy Network: Creative Server!\nYou have been teleported <rainbow>to your own plot!</rainbow>\nHere, you can build almost anything you want\nIf you need help, run the /discord command and we will help you!</light_purple>")))
+        }
+    }
+}

src/main/kotlin/xyz/lncvrt/galaxycreations/events/ProjectileLaunchListener.kt

@@ -0,0 +1,14 @@
+package xyz.lncvrt.galaxycreations.events
+
+import org.bukkit.entity.EntityType
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.entity.ProjectileLaunchEvent
+
+class ProjectileLaunchListener : Listener {
+    @EventHandler
+    fun onProjectileLaunchEvent(event: ProjectileLaunchEvent) {
+        if (event.entityType == EntityType.ARROW) return
+        event.isCancelled = true
+    }
+}