I have a problem, please help me!

Hello Everyone!
​

I am developing a Bukkit Plugin for another economy (for me).
I have arguments [3] /mt add <username> <money>
/mt add PepitoPerez 200
When I go to add an Integer number and a string converted to int, compiles all well, but when I open the server, jumps an strange crash, can you help me please?

Code:

 @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
     if (label.equals("mt"))
        {
        if (!(sender instanceof Player))
        {
            return true;
        } else {
       
          if (args.length == 0)
          {
              sender.sendMessage(ChatColor.DARK_GREEN + "Tus MT: " + Total);
              return true;
          } else if (args[0].equalsIgnoreCase("help")) {
              //Te muestra la ayuda
              sender.sendMessage(ChatColor.GREEN + "--------------------------------------------");
              sender.sendMessage(ChatColor.DARK_RED + "M" + ChatColor.DARK_GRAY + "T" + ChatColor.GOLD + " Sistema de economía");
              sender.sendMessage(ChatColor.GOLD + "Desarrollado por KR4T05_, Franco1990 y Desqui");
              sender.sendMessage(ChatColor.GREEN + "--------------------------------------------");
              sender.sendMessage(ChatColor.DARK_GREEN + "/mt help: " + ChatColor.GOLD + "Muestra esta pantalla de ayuda.");
          if (sender.hasPermission("mt.veradmincmds") || sender.isOp())
          {
              sender.sendMessage(ChatColor.DARK_GREEN + "/mt add: " + ChatColor.GOLD + "Agrega MT a un usuario");
              sender.sendMessage(ChatColor.DARK_GREEN + "/mt remove: " + ChatColor.GOLD + "Quita MT a un usuario");
          }
              sender.sendMessage(ChatColor.DARK_GREEN + "/mt buy: " + ChatColor.GOLD + "Compra beneficios con la MT");
              sender.sendMessage(ChatColor.DARK_GREEN + "/mt page: " + ChatColor.GOLD + "Muestra página y métodos de pago.");
              sender.sendMessage(ChatColor.GREEN + "--------------------------------------------");
              return true;
          } else if (args[0].equalsIgnoreCase("add")) {
              if (sender.isOp())
              {
                  if (args.length == 3)
                  {
                      Player sumado = Bukkit.getServer().getPlayerExact(args[2]);
                  
                    String suma = args[3];

                    try {
                        int suma2 = Integer.parseInt(suma);
                          Total = Total + suma2;
                          sender.sendMessage(ChatColor.GREEN + sumado.getName());
                          sender.sendMessage(ChatColor.GREEN + Integer.toString(Total));
                    } catch (CommandException e){
                        return true;
                    }
                      if (sumado==null)
                      {
                        sender.sendMessage(Economy.Firma + ChatColor.RED + "Este usuario no está conectado.");
                        return true;
                      }
                      

Code:

[13:02:44] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'mt' in plugin MTMoney v1.0
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:683) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:952) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:814) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:47) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 3
    at minecraftania.mtmoney.MTMoney.onCommand(MTMoney.java:84) ~[?:?]
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    ... 13 more

 

the Error would be nice
EDIT2: Whats our MTMoney class? @KR4T05

 

What's the error?

 

Here's the problem. You're checking if the amount of arguments is equal to 3, and then you try to retrieve index 3. Remember, Java arrays start at 0, so index 3 is actually the 4th index. Since you've already made sure the array has a length of 3, there is no 4th index, and your code fails.

I think you might want to access index 2 at line 37 and index 1 at line 35.

 

@Rocoty Thank you very much!