Args onCommand check value

[Clems02]

Hi,

I would like to use a command like this: / set mangouson efficiency 50.
It's for set efficienct enchant lvl 50 on an item.

But I want to check the value of args[0] and args[2] before check the enchant name of the args[1].
I want to check it to don't create exception and error in the console.

        if(cmd.getName().equalsIgnoreCase("set") && args.length == 3){
          
            //check args[0] and args[2]
          
            Player p = Bukkit.getPlayer(args[0]);
            int x = Integer.valueOf(args[2]);

          
            ItemStack item = p.getInventory().getItem(0);
            ItemMeta itemM = item.getItemMeta();
          
            if(args[1].equalsIgnoreCase("efficiency")) {
                              
                itemM.addEnchant(Enchantment.DIG_SPEED, x, true);
            }

Do you have a solution please ?

 

[_Torpedo_]

You should post the errors you're getting in the console. (Also please don't post it here, use something like hastebin.com)

If I were to guess, the errors are probably because the player isn't online (args[0]) and because enchantment level is not a number (args[2]).
To make sure player is online, check if "p" is null. (Since afterall, it should be a null pointer exception if I am not wrong)

Player p = Bukkit.getPlayer(args[0]);
if(p == null) {
  //Write an error message to player here and stop the function using return or something
}

To check whether enchantment level is a number (args[2]) try to parse it:

try {
  Integer.parseInt(args[2]);
} catch (NumberFormatException e) {
  //Write an error message to player here and stop the function
}

Try to research more about null and the Integer/wrapper classes in Java. These are not related to Spigot and rather development in general so they would help you further

 

[Clems02]

It's work fine Ty !

Maybe do you have any tutorial from try/catch to manage exception ?

 

[Sean147299]

It's work fine Ty !

Maybe do you have any tutorial from try/catch to manage exception ?

https://lmgtfy.com/?q=java+try+catch