Fix this?

Code:java

package me.pogostick29.vanish;
 
import java.util.ArrayList;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class vanish extends JavaPlugin implements Listener {
 
public void onEnable() {
Bukkit.getServer().getPluginManager().registerEvents(this, this);
}
 
private ArrayList<Player> vanished = new ArrayList<Player>();
 
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args) {
 
if (!(sender instanceof Player)) {
sender.sendMessage(ChatColor.RED + "You cannot vanish!");
return true;
}
 
Player p = (Player) sender;
 
if (cmd.getName().equalsIgnoreCase("vanish")) {
// Check perms
 
if (!vanished.contains(p)) {
for (Player pl : Bukkit.getServer().getOnlinePlayers()) {
pl.hidePlayer(p);
}
vanished.add(p);
p.sendMessage(ChatColor.GREEN + "You have been vanished!");
return true;
}
else {
for (Player pl : Bukkit.getServer().getOnlinePlayers()) {
pl.showPlayer(p);
}
vanished.remove(p);
p.sendMessage(ChatColor.GREEN + "You have been unvanished!");
return true;
}
}
return true;
}
 
@EventHandler
public void onPlayerJoin(PlayerJoinEvent e) {
for (Player p : vanished) {
e.getPlayer().hidePlayer(p);
}
}
 
@EventHandler
public void onPlayerLeave(PlayerQuitEvent e) {
vanished.remove(e.getPlayer());
}
}

How would I make it so that when the user is vanished, they cannot pick up items?

 

Code:java

if (ply.hasPotionEffect(PotionEffectType.INVISIBILITY)) {
 
    ply.setCanPickupItems(false);
 
}

Super simple. Replace "ply" with you player instance.

Simple as that.

 

Moved to a more appropriate section.

 

draypvp
if(vanished.contains(player.getName()) { player.setCanPickupItems(false); } Use string ArrayLists unless you know how to handle Player ArrayLists. I suggest String ones as they are far more easier to work with.