More style fixes

pom.xml

@@ -49,14 +49,6 @@
 					</execution>
 				</executions>
 			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<configuration>
-					<source>8</source>
-					<target>8</target>
-				</configuration>
-			</plugin>
 		</plugins>
 	</build>
 </project>

src/main/java/pw/kaboom/extras/Main.java

@@ -1,8 +1,6 @@
 package pw.kaboom.extras;
 
 import java.util.Collections;
-import java.util.HashSet;
-import java.util.UUID;
 
 import org.bukkit.block.BlockFace;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -36,9 +34,7 @@ import pw.kaboom.extras.modules.player.PlayerTeleport;
 import pw.kaboom.extras.modules.server.ServerCommand;
 import pw.kaboom.extras.modules.server.ServerPing;
 
-public class Main extends JavaPlugin {
+public final class Main extends JavaPlugin {
-	public static HashSet<UUID> skinInProgress = new HashSet<UUID>();
-
 	@Override
 	public void onLoad() {
 		/* Fill lists */

src/main/java/pw/kaboom/extras/commands/CommandServerInfo.java

@@ -45,8 +45,8 @@ public final class CommandServerInfo implements CommandExecutor {
 		);
 		sendInfoMessage(sender, "Java version",
 			ManagementFactory.getRuntimeMXBean().getSpecVersion()
-					+ " " +
+					+ " "
-					ManagementFactory.getRuntimeMXBean().getVmVersion()
+					+ ManagementFactory.getRuntimeMXBean().getVmVersion()
 		);
 
 		try {
@@ -103,8 +103,8 @@ public final class CommandServerInfo implements CommandExecutor {
 		final long seconds = (ManagementFactory.getRuntimeMXBean().getUptime() / 1000) % 60;
 
 		sendInfoMessage(sender, "Server uptime",
-			minutes + " minute(s) " +
+			minutes + " minute(s) "
-			seconds + " second(s)"
+					+ seconds + " second(s)"
 		);
 		return true;
 	}

src/main/java/pw/kaboom/extras/helpers/SkinDownloader.java

@@ -3,6 +3,8 @@ package pw.kaboom.extras.helpers;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.net.URL;
+import java.util.HashSet;
+import java.util.UUID;
 
 import javax.net.ssl.HttpsURLConnection;
 
@@ -18,6 +20,8 @@ import com.google.gson.JsonParser;
 import pw.kaboom.extras.Main;
 
 public final class SkinDownloader {
+	public static HashSet<UUID> skinInProgress = new HashSet<UUID>();
+
 	private HttpsURLConnection skinConnection;
 	private InputStreamReader skinStream;
 
@@ -28,7 +32,7 @@ public final class SkinDownloader {
 		new BukkitRunnable() {
 			@Override
 			public void run() {
-				Main.skinInProgress.add(player.getUniqueId());
+				skinInProgress.add(player.getUniqueId());
 
 				final PlayerProfile profile = player.getPlayerProfile();
 
@@ -48,14 +52,14 @@ public final class SkinDownloader {
 					try {
 						skinStream.close();
 						skinConnection.disconnect();
-					} catch (Exception e) {
+					} catch (Exception ignored) {
 					}
 
 					if (!shouldChangeName && shouldSendMessage) {
 						player.sendMessage("A player with that username doesn't exist");
 					}
 
-					Main.skinInProgress.remove(player.getUniqueId());
+					skinInProgress.remove(player.getUniqueId());
 
 					if (!shouldChangeName) {
 						return;
@@ -75,7 +79,7 @@ public final class SkinDownloader {
 							// Do nothing
 						}
 
-						Main.skinInProgress.remove(player.getUniqueId());
+						skinInProgress.remove(player.getUniqueId());
 					}
 				}.runTask(JavaPlugin.getPlugin(Main.class));
 			}

src/main/java/pw/kaboom/extras/modules/block/BlockCheck.java

@@ -6,10 +6,12 @@ import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.event.block.SignChangeEvent;
 
-public class BlockCheck implements Listener {
+public final class BlockCheck implements Listener {
 	@EventHandler
-	void onBlockPlace(BlockPlaceEvent event) {
+	void onBlockPlace(final BlockPlaceEvent event) {
-		if (event.getItemInHand().toString().length() > 3019) {
+		final int maxItemStringLength = 3019;
+
+		if (event.getItemInHand().toString().length() > maxItemStringLength) {
 			event.setCancelled(true);
 		}
 
@@ -21,7 +23,7 @@ public class BlockCheck implements Listener {
 	}
 
 	@EventHandler
-	void onSignChange(SignChangeEvent event) {
+	void onSignChange(final SignChangeEvent event) {
 		try {
 			event.getLines();
 		} catch (Exception exception) {

src/main/java/pw/kaboom/extras/modules/block/BlockPhysics.java

@@ -16,16 +16,16 @@ import org.bukkit.event.entity.EntityChangeBlockEvent;
 
 import com.destroystokyo.paper.event.block.BlockDestroyEvent;
 
-public class BlockPhysics implements Listener {
+public final class BlockPhysics implements Listener {
 	public static HashSet<BlockFace> blockFaces = new HashSet<BlockFace>();
 
 	@EventHandler
-	void onBlockForm(BlockFormEvent event) {
+	void onBlockForm(final BlockFormEvent event) {
-		if (event.getBlock().getType() == Material.LAVA ||
+		if (event.getBlock().getType() == Material.LAVA
-			event.getBlock().getType() == Material.WATER) {
+				|| event.getBlock().getType() == Material.WATER) {
 			for (BlockFace face : blockFaces) {
-				if (event.getBlock().getRelative(face).getType() != Material.LAVA &&
+				if (event.getBlock().getRelative(face).getType() != Material.LAVA
-					event.getBlock().getRelative(face).getType() != Material.WATER) {
+						&& event.getBlock().getRelative(face).getType() != Material.WATER) {
 					return;
 				}
 				event.setCancelled(true);
@@ -34,9 +34,9 @@ public class BlockPhysics implements Listener {
 	}
 
 	@EventHandler
-	void onBlockFromTo(BlockFromToEvent event) {
+	void onBlockFromTo(final BlockFromToEvent event) {
-		if (event.getBlock().getType() == Material.LAVA ||
+		if (event.getBlock().getType() == Material.LAVA
-			event.getBlock().getType() == Material.WATER) {
+				|| event.getBlock().getType() == Material.WATER) {
 			boolean lavaFound = false;
 			boolean waterFound = false;
 
@@ -55,7 +55,7 @@ public class BlockPhysics implements Listener {
 	}
 
 	@EventHandler
-	void onBlockDestroy(BlockDestroyEvent event) {
+	void onBlockDestroy(final BlockDestroyEvent event) {
 		if (!event.getBlock().getType().isSolid()) {
 			for (BlockFace face : blockFaces) {
 				if (event.getBlock().getRelative(face).getType() != event.getBlock().getType()) {
@@ -68,7 +68,7 @@ public class BlockPhysics implements Listener {
 	}
 
 	@EventHandler
-	void onBlockPhysics(BlockPhysicsEvent event) {
+	void onBlockPhysics(final BlockPhysicsEvent event) {
 		switch (event.getChangedType()) {
 		case COMPARATOR:
 		case REDSTONE_TORCH:
@@ -99,23 +99,26 @@ public class BlockPhysics implements Listener {
 	}
 
 	@EventHandler
-	void onBlockRedstone(BlockRedstoneEvent event) {
+	void onBlockRedstone(final BlockRedstoneEvent event) {
 		final double tps = Bukkit.getServer().getTPS()[0];
+		final int maxTps = 10;
 
-		if (tps < 10) {
+		if (tps < maxTps) {
 			event.setNewCurrent(0);
 		}
 	}
 
-	int fallingBlockCount;
+	private int fallingBlockCount;
 
 	@EventHandler
-	void onEntityChangeBlock(EntityChangeBlockEvent event) {
+	void onEntityChangeBlock(final EntityChangeBlockEvent event) {
-		if (event.getEntityType() == EntityType.FALLING_BLOCK &&
+		if (event.getEntityType() == EntityType.FALLING_BLOCK
-			event.getTo() == Material.AIR) {
+				&& event.getTo() == Material.AIR) {
 			fallingBlockCount++;
 
-			if (fallingBlockCount == 10) {
+			final int maxFallingBlockCount = 10;
+
+			if (fallingBlockCount == maxFallingBlockCount) {
 				event.setCancelled(true);
 				fallingBlockCount = 0;
 			}

src/main/java/pw/kaboom/extras/modules/entity/EntityExplosion.java

@@ -7,15 +7,19 @@ import org.bukkit.event.Listener;
 
 import org.bukkit.event.entity.ExplosionPrimeEvent;
 
-public class EntityExplosion implements Listener {
+public final class EntityExplosion implements Listener {
 	@EventHandler
-	void onExplosionPrime(ExplosionPrimeEvent event) {
+	void onExplosionPrime(final ExplosionPrimeEvent event) {
-		if (event.getRadius() > 20) {
+		final int maxRadius = 20;
-			event.setRadius(20);
+
+		if (event.getRadius() > maxRadius) {
+			event.setRadius(maxRadius);
 		}
 
-		if (event.getEntity().getWorld().getEntitiesByClass(Fireball.class).size() > 30 &&
+		final int maxFireballCount = 30;
-			event.getRadius() > 1) {
+
+		if (event.getEntity().getWorld().getEntitiesByClass(Fireball.class).size() > maxFireballCount
+				&& event.getRadius() > 1) {
 			event.setRadius(1);
 		}
 	}

src/main/java/pw/kaboom/extras/modules/entity/EntityKnockback.java

@@ -5,9 +5,9 @@ import org.bukkit.event.Listener;
 
 import com.destroystokyo.paper.event.entity.EntityKnockbackByEntityEvent;
 
-public class EntityKnockback implements Listener {
+public final class EntityKnockback implements Listener {
 	@EventHandler
-	void onEntityKnockbackByEntity(EntityKnockbackByEntityEvent event) {
+	void onEntityKnockbackByEntity(final EntityKnockbackByEntityEvent event) {
 		final int knockbackLimit = 60;
 
 		if (event.getKnockbackStrength() > knockbackLimit) {

src/main/java/pw/kaboom/extras/modules/entity/EntityTeleport.java

@@ -5,9 +5,9 @@ import org.bukkit.event.Listener;
 
 import org.bukkit.event.entity.EntityTeleportEvent;
 
-public class EntityTeleport implements Listener {
+public final class EntityTeleport implements Listener {
 	@EventHandler
-	void onEntityTeleport(EntityTeleportEvent event) {
+	void onEntityTeleport(final EntityTeleportEvent event) {
 		event.setTo(EntitySpawn.limitLocation(event.getTo()));
 	}
 }

src/main/java/pw/kaboom/extras/modules/player/PlayerChat.java

@@ -19,9 +19,9 @@ import org.bukkit.plugin.java.JavaPlugin;
 
 import pw.kaboom.extras.Main;
 
-public class PlayerChat implements Listener {
+public final class PlayerChat implements Listener {
 	@EventHandler
-	void onAsyncPlayerChat(AsyncPlayerChatEvent event) {
+	void onAsyncPlayerChat(final AsyncPlayerChatEvent event) {
 		final Player player = event.getPlayer();
 		final UUID playerUuid = event.getPlayer().getUniqueId();
 

src/main/java/pw/kaboom/extras/modules/player/PlayerCommand.java

@@ -10,11 +10,11 @@ import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 
 import pw.kaboom.extras.modules.server.ServerCommand;
 
-public class PlayerCommand implements Listener {
+public final class PlayerCommand implements Listener {
 	static HashMap<UUID, Long> commandMillisList = new HashMap<UUID, Long>();
 
 	@EventHandler
-	void onPlayerCommandPreprocess(PlayerCommandPreprocessEvent event) {
+	void onPlayerCommandPreprocess(final PlayerCommandPreprocessEvent event) {
 		final UUID playerUuid = event.getPlayer().getUniqueId();
 
 		if (commandMillisList.get(playerUuid) != null) {

src/main/java/pw/kaboom/extras/modules/player/PlayerConnection.java

@@ -1,7 +1,5 @@
 package pw.kaboom.extras.modules.player;
 
-import java.io.IOException;
-
 import org.bukkit.Chunk;
 import org.bukkit.World;
 import org.bukkit.block.BlockState;
@@ -19,17 +17,16 @@ import org.bukkit.plugin.java.JavaPlugin;
 import pw.kaboom.extras.Main;
 import pw.kaboom.extras.helpers.SkinDownloader;
 
-public class PlayerConnection implements Listener {
+public final class PlayerConnection implements Listener {
 	@EventHandler
-	void onAsyncPlayerPreLogin(AsyncPlayerPreLoginEvent event) throws IOException {
+	void onAsyncPlayerPreLogin(final AsyncPlayerPreLoginEvent event) {
 		if (event.getName().length() > 16) {
 			event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, "Your username can't be longer than 16 characters");
-			return;
 		}
 	}
 
 	@EventHandler
-	void onPlayerJoin(PlayerJoinEvent event) {
+	void onPlayerJoin(final PlayerJoinEvent event) {
 		final Player player = event.getPlayer();
 		final String title = JavaPlugin.getPlugin(Main.class).getConfig().getString("playerJoinTitle");
 		final String subtitle = JavaPlugin.getPlugin(Main.class).getConfig().getString("playerJoinSubtitle");
@@ -37,8 +34,8 @@ public class PlayerConnection implements Listener {
 		final int stay = 160;
 		final int fadeOut = 5;
 
-		if (title != null ||
+		if (title != null
-			subtitle != null) {
+				|| subtitle != null) {
 				player.sendTitle(
 				title,
 				subtitle,
@@ -50,16 +47,16 @@ public class PlayerConnection implements Listener {
 	}
 
 	@EventHandler
-	void onPlayerKick(PlayerKickEvent event) {
+	void onPlayerKick(final PlayerKickEvent event) {
 		if (!JavaPlugin.getPlugin(Main.class).getConfig().getBoolean("enableKick")) {
 			event.setCancelled(true);
 		}
 	}
 
 	@EventHandler
-	void onPlayerLogin(PlayerLoginEvent event) {
+	void onPlayerLogin(final PlayerLoginEvent event) {
-		if (event.getHostname().startsWith("play.flame.ga") &&
+		if (event.getHostname().startsWith("play.flame.ga")
-			event.getHostname().endsWith(":25565")) {
+				&& event.getHostname().endsWith(":25565")) {
 			event.disallow(Result.KICK_OTHER, "You connected to the server using an outdated server address/IP.\nPlease use the following address/IP:\n\nkaboom.pw");
 			return;
 		}
@@ -70,8 +67,8 @@ public class PlayerConnection implements Listener {
 			event.allow();
 		}
 
-		if (event.getResult() == Result.KICK_FULL &&
+		if (event.getResult() == Result.KICK_FULL
-			JavaPlugin.getPlugin(Main.class).getConfig().getBoolean("allowJoinOnFullServer")) {
+				&& JavaPlugin.getPlugin(Main.class).getConfig().getBoolean("allowJoinOnFullServer")) {
 			event.allow();
 		}
 
@@ -92,7 +89,7 @@ public class PlayerConnection implements Listener {
 	void onPlayerQuit(PlayerQuitEvent event) {
 		PlayerCommand.commandMillisList.remove(event.getPlayer().getUniqueId());
 		PlayerInteract.interactMillisList.remove(event.getPlayer().getUniqueId());
-		Main.skinInProgress.remove(event.getPlayer().getUniqueId());
+		SkinDownloader.skinInProgress.remove(event.getPlayer().getUniqueId());
 
 		final World world = event.getPlayer().getWorld();
 

src/main/java/pw/kaboom/extras/modules/player/PlayerDamage.java

@@ -23,19 +23,19 @@ import org.bukkit.event.entity.PlayerDeathEvent;
 
 import org.bukkit.inventory.ItemStack;
 
-public class PlayerDamage implements Listener {
+public final class PlayerDamage implements Listener {
 	@EventHandler
-	void onEntityDamage(EntityDamageEvent event) {
+	void onEntityDamage(final EntityDamageEvent event) {
 		if (event.getEntityType() == EntityType.PLAYER) {
-			if (event.getCause() == DamageCause.VOID &&
+			if (event.getCause() == DamageCause.VOID
-				event.getDamage() == Float.MAX_VALUE) {
+					&& event.getDamage() == Float.MAX_VALUE) {
 				event.setCancelled(true);
 			}
 		}
 	}
 
 	@EventHandler
-	void onPlayerDeath(PlayerDeathEvent event) {
+	void onPlayerDeath(final PlayerDeathEvent event) {
 		final Player player = event.getEntity();
 		final AttributeInstance maxHealth = player.getAttribute(Attribute.GENERIC_MAX_HEALTH);
 
@@ -70,8 +70,8 @@ public class PlayerDamage implements Listener {
 					final Location yLocation = new Location(world, spawnLocation.getX(), y, spawnLocation.getZ());
 					final Block coordBlock = world.getBlockAt(yLocation);
 
-					if (!coordBlock.getType().isSolid() &&
+					if (!coordBlock.getType().isSolid()
-						!coordBlock.getRelative(BlockFace.UP).getType().isSolid()) {
+							&& !coordBlock.getRelative(BlockFace.UP).getType().isSolid()) {
 						player.teleportAsync(yLocation);
 						break;
 					}

src/main/java/pw/kaboom/extras/modules/player/PlayerInteract.java

@@ -7,11 +7,11 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerInteractEvent;
 
-public class PlayerInteract implements Listener {
+public final class PlayerInteract implements Listener {
 	static HashMap<UUID, Long> interactMillisList = new HashMap<UUID, Long>();
 
 	@EventHandler
-	void onPlayerInteract(PlayerInteractEvent event) {
+	void onPlayerInteract(final PlayerInteractEvent event) {
 		final UUID playerUuid = event.getPlayer().getUniqueId();
 
 		if (interactMillisList.get(playerUuid) != null) {

src/main/java/pw/kaboom/extras/modules/player/PlayerTeleport.java

@@ -7,9 +7,9 @@ import org.bukkit.event.player.PlayerTeleportEvent;
 
 import pw.kaboom.extras.modules.entity.EntitySpawn;
 
-public class PlayerTeleport implements Listener {
+public final class PlayerTeleport implements Listener {
 	@EventHandler
-	void onPlayerTeleport(PlayerTeleportEvent event) {
+	void onPlayerTeleport(final PlayerTeleportEvent event) {
 		event.setTo(EntitySpawn.limitLocation(event.getTo()));
 	}
 }

src/main/java/pw/kaboom/extras/modules/server/ServerCommand.java

@@ -10,10 +10,10 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.server.ServerCommandEvent;
 
-public class ServerCommand implements Listener {
+public final class ServerCommand implements Listener {
 	public static HashSet<String> consoleCommandBlacklist = new HashSet<String>();
 
-	public static String checkCommand(CommandSender sender, String command, boolean isConsoleCommand) {
+	public static String checkCommand(final CommandSender sender, final String command, final boolean isConsoleCommand) {
 		final String[] arr = command.split(" ");
 		String commandName = arr[0].toLowerCase();
 
@@ -31,20 +31,20 @@ public class ServerCommand implements Listener {
 						for (int i = 1; i < arr.length; i++) {
 							if ("run".equalsIgnoreCase(arr[i])) {
 								if (i + 1 < arr.length) {
-									if ("execute".equalsIgnoreCase(arr[i+1]) ||
+									if ("execute".equalsIgnoreCase(arr[i + 1])
-										"particle".equalsIgnoreCase(arr[i+1]) ||
+											|| "particle".equalsIgnoreCase(arr[i + 1])
-										"save-off".equalsIgnoreCase(arr[i+1]) ||
+											|| "save-off".equalsIgnoreCase(arr[i + 1])
-										"spreadplayers".equalsIgnoreCase(arr[i+1]) ||
+											|| "spreadplayers".equalsIgnoreCase(arr[i + 1])
-										"stop".equalsIgnoreCase(arr[i+1])) {
+											|| "stop".equalsIgnoreCase(arr[i + 1])) {
 										Command.broadcastCommandMessage(sender, "Forbidden execute command detected");
 										return "cancel";
-									} else if (i+3 < arr.length &&
+									} else if (i + 3 < arr.length
-										"gamerule".equalsIgnoreCase(arr[i+1])) {
+											&& "gamerule".equalsIgnoreCase(arr[i + 1])) {
-										if ("randomTickSpeed".equalsIgnoreCase(arr[i+2]) &&
+										if ("randomTickSpeed".equalsIgnoreCase(arr[i + 2])
-											Double.parseDouble(arr[i+3]) > 6) {
+												&& Double.parseDouble(arr[i + 3]) > 6) {
 											return command.replaceFirst("(?i)" + "randomTickSpeed " + arr[i + 3], "randomTickSpeed 6");
-										} else if ("spawnRadius".equalsIgnoreCase(arr[i+2]) &&
+										} else if ("spawnRadius".equalsIgnoreCase(arr[i + 2])
-											Double.parseDouble(arr[i+3]) > 100) {
+												&& Double.parseDouble(arr[i + 3]) > 100) {
 											return command.replaceFirst("(?i)" + "spawnRadius " + arr[i + 3], "spawnRadius 100");
 										}
 									} else if ("give".equalsIgnoreCase(arr[i + 1])) {
@@ -57,8 +57,8 @@ public class ServerCommand implements Listener {
 								break;
 							}
 
-							if ("as".equalsIgnoreCase(arr[i]) ||
+							if ("as".equalsIgnoreCase(arr[i])
-								"at".equalsIgnoreCase(arr[i])) {
+									|| "at".equalsIgnoreCase(arr[i])) {
 								asAtCount++;
 							}
 						}
@@ -72,11 +72,11 @@ public class ServerCommand implements Listener {
 				case "/minecraft:gamerule":
 				case "/gamerule":
 					if (arr.length >= 3) {
-						if ("randomTickSpeed".equalsIgnoreCase(arr[1]) &&
+						if ("randomTickSpeed".equalsIgnoreCase(arr[1])
-							Double.parseDouble(arr[2]) > 6) {
+								&& Double.parseDouble(arr[2]) > 6) {
 							return command.replaceFirst(arr[2], "6");
-						} else if ("spawnRadius".equalsIgnoreCase(arr[1]) &&
+						} else if ("spawnRadius".equalsIgnoreCase(arr[1])
-							Double.parseDouble(arr[2]) > 100) {
+								&& Double.parseDouble(arr[2]) > 100) {
 							return command.replaceFirst(arr[2], "100");
 						}
 					}
@@ -90,8 +90,8 @@ public class ServerCommand implements Listener {
 					break;
 				case "/minecraft:particle":
 				case "/particle":
-					if (arr.length >= 10 &&
+					if (arr.length >= 10
-						Double.parseDouble(arr[9]) > 10) {
+							&& Double.parseDouble(arr[9]) > 10) {
 						arr[9] = "10";
 						return String.join(" ", arr);
 					}
@@ -100,9 +100,9 @@ public class ServerCommand implements Listener {
 				case "/bukkit:rl":
 				case "/reload":
 				case "/rl":
-					if (sender.hasPermission("bukkit.command.reload") &&
+					if (sender.hasPermission("bukkit.command.reload")
-						arr.length >= 2 &&
+							&& arr.length >= 2
-						"confirm".equalsIgnoreCase(arr[1])) {
+							&& "confirm".equalsIgnoreCase(arr[1])) {
 						Command.broadcastCommandMessage(sender, ChatColor.RED + "Please note that this command is not supported and may cause issues when using some plugins.");
 						Command.broadcastCommandMessage(sender, ChatColor.RED + "If you encounter any issues please use the /stop command to restart your server.");
 						Command.broadcastCommandMessage(sender, ChatColor.GREEN + "Reload complete.");
@@ -125,12 +125,15 @@ public class ServerCommand implements Listener {
 				case "/minecraft:spreadplayers":
 				case "/spreadplayers":
 					if (arr.length >= 5) {
-						if (Double.parseDouble(arr[3]) > 0)
+						if (Double.parseDouble(arr[3]) > 0) {
 							arr[3] = "0";
-						if (Double.parseDouble(arr[4]) < 8)
+						}
+						if (Double.parseDouble(arr[4]) < 8) {
 							arr[4] = "8";
-						if (Double.parseDouble(arr[4]) > 50)
+						}
+						if (Double.parseDouble(arr[4]) > 50) {
 							arr[4] = "50";
+						}
 
 						return String.join(" ", arr);
 					}
@@ -141,6 +144,8 @@ public class ServerCommand implements Listener {
 						Command.broadcastCommandMessage(sender, "Stopping the server");
 						return "cancel";
 					}
+				default:
+					break;
 			}
 		} catch (NumberFormatException exception) {
 			// Do nothing
@@ -149,7 +154,7 @@ public class ServerCommand implements Listener {
 	}
 
 	@EventHandler
-	void onServerCommand(ServerCommandEvent event) {
+	void onServerCommand(final ServerCommandEvent event) {
 		final CommandSender sender = event.getSender();
 		final String[] arr = event.getCommand().split(" ");
 

src/main/java/pw/kaboom/extras/modules/server/ServerPing.java

@@ -5,11 +5,12 @@ import org.bukkit.event.Listener;
 
 import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
 
-public class ServerPing implements Listener {
+public final class ServerPing implements Listener {
 	@EventHandler
-	void onServerListPing(PaperServerListPingEvent event) {
+	void onServerListPing(final PaperServerListPingEvent event) {
 		if (event.getClient().getProtocolVersion() == -1) {
-			event.setProtocolVersion(573);
+			final int protocol = 573;
+			event.setProtocolVersion(protocol);
 		} else {
 			event.setProtocolVersion(event.getClient().getProtocolVersion());
 		}