Getting an Internal Error when trying to Message an Offline player

I fixed my previous bug with the code, now i am stuck with an internal error when trying to send a message to an offline User.
However i want the code to allow me to send a message to an offline player, instead of sending a message to the sender.

package me.Munnzeh.Serveressentials;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class MSGCommandExecutor implements CommandExecutor {

@SuppressWarnings("unused")
private Serveressentials plugin;

public MSGCommandExecutor(Serveressentials plugin) {
this.plugin = plugin;
}

@Override
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
Player s = (Player)sender;
//Player target = s.getServer().getPlayer(args[0]);
if(cmd.getName().equalsIgnoreCase("Msg")){
if(args.length > 1){

StringBuilder message = new StringBuilder();

for (int i = 1; i < args.length; i++) {
if (i > 1) message.append(" ");
message.append(args);
}

String result = ChatColor.GREEN + "[" + sender.getName() + " > " + s.getServer().getPlayer(args[0]).getName() + "] - " + message ;

s.getServer().getPlayer(args[0]).sendMessage(result);
Bukkit.broadcast(ChatColor.GREEN + "[Admin Debug] User " + sender.getName() + " sent a message to: " + s.getServer().getPlayer(args[0]).getName());
}else{
s.sendMessage(ChatColor.DARK_RED + "Command Error: /Msg <Player> <Message>");

}

return false;
}


{




}

{

}
{

}
return false;
}
}
How could i fix it to allow me to send the message to the offline user, so if i did /msg Munnzeh 1 hi, it would still broadcast the message.

 

Just check if the player is online.

Code:java

Player target = Bukkit.getPlayer(args[0]);
if (target != null) target.sendMessage("blabla");
else s.sendMessage("this player is offline");

 

If the player is offline how can it send them a message, what you need to do is save the message into a file, then when a player logs in check if that file contains a message for that player

 

Why would you ever want to send an offline player a message?

 

If you want to save messages when a player is offline, and send it to them when they log on, use this:

Code:java

 
HashMap<String,String> messagesToSend = new HashMap<>();
 
public void sendMessageToWhenOnline(OfflinePlayer o, String message){
    if(o.getPlayer() != null){
        Player p = o.getPlayer();
        p.sendMessage(message);
    }
    messagesToSend.put(o.getName(), message);
}
 
@EventHandler
public void onPlayerJoin(PlayerJoinEvent e){
    Player p = e.getPlayer();
    if(messagesToSend.containsKey(p.getName())){
        p.sendMessage(messagesToSend.remove(p.getName()));
    }
}

(not tested)