below name scoreboard with sidebar fix as it wont show rank for new players lol

src/main/java/com/night/nullvalkyrie/Main.java

@@ -1,10 +1,7 @@
 package com.night.nullvalkyrie;
 
 import com.night.nullvalkyrie.Chests.MenuListener;
-import com.night.nullvalkyrie.RankSys.NameTagManager;
+import com.night.nullvalkyrie.RankSys.*;
-import com.night.nullvalkyrie.RankSys.ScoreboardListener;
-import com.night.nullvalkyrie.RankSys.RankManager;
-import com.night.nullvalkyrie.RankSys.SideBarManager;
 import com.night.nullvalkyrie.commands.*;
 import net.md_5.bungee.api.ChatMessageType;
 import net.md_5.bungee.api.chat.TextComponent;
@@ -44,12 +41,14 @@ public final class Main extends JavaPlugin implements Listener {
     private RankManager rankManager;
     private NameTagManager nameTagManager;
     private SideBarManager sideBarManager;
+    private BelowNameManager belowNameManager;
 
     public RankManager getRankManager() {
         return rankManager;
     }
     public NameTagManager getNameTagManager() { return nameTagManager; }
     public SideBarManager getSideBarManager() { return  sideBarManager; }
+    public BelowNameManager getBelowNameManager() { return belowNameManager; }
     @Override
     public void onEnable() {
         new VanishCommand();new TestCommand();new WeaponCommand();new AnvilCommand();new ArmorCommand();new MenuCommand();new RankCommand(this);
@@ -65,7 +64,7 @@ public final class Main extends JavaPlugin implements Listener {
         nameTagManager = new NameTagManager(this);
         rankManager = new RankManager(this);
         sideBarManager = new SideBarManager(this);
-
+        belowNameManager = new BelowNameManager();
         ItemStack widow_sword = new ItemStack(Material.STICK);
         widow_sword.addUnsafeEnchantment(Enchantment.DAMAGE_ALL, 20);
         widow_sword.addUnsafeEnchantment(Enchantment.LOOT_BONUS_MOBS, 10);
@@ -83,6 +82,7 @@ public final class Main extends JavaPlugin implements Listener {
     }
     @EventHandler
     public void Projectile(ProjectileLaunchEvent e) {
+        if(e.getEntity().getShooter() instanceof Player) {
             Player player = (Player) e.getEntity().getShooter();
             if(player.getInventory().getItemInMainHand().getItemMeta() != null) {
                 String name = player.getInventory().getItemInMainHand().getItemMeta().getDisplayName();
@@ -91,9 +91,7 @@ public final class Main extends JavaPlugin implements Listener {
                     s.setVelocity(player.getLocation().getDirection().multiply(10));
                 }
             }
-
+        }
-
-
     }
     @EventHandler
     public void onPlayerInteract(PlayerInteractEvent e) {
@@ -111,7 +109,7 @@ public final class Main extends JavaPlugin implements Listener {
 
     @EventHandler
     public void onJoin(PlayerJoinEvent e) {
-        e.setJoinMessage(rankManager.getRank(e.getPlayer().getUniqueId()).getDisplay() + " " + e.getPlayer().getName() + ChatColor.WHITE + " joined the server!");
+
 
         e.getPlayer().sendTitle(ChatColor.RED +"Welcome to Apache!", ChatColor.GREEN + "LOL", 20, 100, 20);
         e.getPlayer().spigot().sendMessage(ChatMessageType.ACTION_BAR, TextComponent.fromLegacyText("§1NOT ENOUGH MANNER"));

src/main/java/com/night/nullvalkyrie/RankSys/BelowNameManager.java

@@ -0,0 +1,20 @@
+package com.night.nullvalkyrie.RankSys;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.scoreboard.DisplaySlot;
+import org.bukkit.scoreboard.Objective;
+import org.bukkit.scoreboard.Score;
+import org.bukkit.scoreboard.Scoreboard;
+
+public class BelowNameManager {
+    public void setBelowName(Player player) {
+        Scoreboard board = player.getScoreboard();
+        Objective obj = board.registerNewObjective("HealthBar", "health");
+        obj.setDisplaySlot(DisplaySlot.BELOW_NAME);
+        obj.setDisplayName("/ 20");
+        player.setScoreboard(board);
+        player.setHealth(player.getHealth());
+
+    }
+}

src/main/java/com/night/nullvalkyrie/RankSys/ScoreboardListener.java

@@ -30,6 +30,8 @@ public class ScoreboardListener implements Listener {
         main.getNameTagManager().setNametags(player);
         main.getNameTagManager().newTag(player);
         main.getSideBarManager().setSideBar(player);
+        main.getBelowNameManager().setBelowName(player);
+        e.setJoinMessage(main.getRankManager().getRank(e.getPlayer().getUniqueId()).getDisplay() + " " + e.getPlayer().getName() + ChatColor.WHITE + " joined the server!");
     }
 
     @EventHandler

src/main/java/com/night/nullvalkyrie/RankSys/SideBarManager.java

@@ -22,9 +22,6 @@ public class SideBarManager {
     @SuppressWarnings("deprecation")
     public void setSideBar(Player player) {
         Scoreboard board = player.getScoreboard();
-        if(board.getObjective("Pluto") != null) {
-
-        }
         Objective obj = board.registerNewObjective("Pluto", "dummy");
         obj.setDisplaySlot(DisplaySlot.SIDEBAR);
         obj.setDisplayName(ChatColor.AQUA.toString() + ChatColor.BOLD + "Pluto");

src/main/java/com/night/nullvalkyrie/commands/SpawnCommand.java

@@ -2,10 +2,7 @@ package com.night.nullvalkyrie.commands;
 
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Entity;
+import org.bukkit.entity.*;
-import org.bukkit.entity.EntityType;
-import org.bukkit.entity.Player;
-import org.bukkit.entity.Zombie;
 
 import java.util.List;
 
@@ -22,9 +19,13 @@ public class SpawnCommand extends Command {
     @Override
     public void onCommand(CommandSender sender, String[] args) {
         Player player = (Player) sender;
-        Entity ent = (Entity) Bukkit.getWorld("world").spawnEntity((player.getLocation().add(0, 2, 0)), EntityType.ZOMBIE);
+        Entity ent = player.getWorld().spawnEntity((player.getLocation().add(0, 2, 0)), EntityType.ZOMBIE);
         ent.setCustomName("Gay");
         ent.setCustomNameVisible(true);
+        double ourHealth = 20 * 5;
+        Damageable ente = (Damageable) ent;
+        ente.setMaxHealth(ourHealth);
+        ente.setHealth(ourHealth);
 
     }