Solved Problem | Check If Argument == Integer

Hello! I just started with Java Bukkit coding. Im making my very first real plugin. But i have one problem...

So i say that the player can give a number of amount items they want but if they give a String it is giving an error ofcoarse... How do i fix that i can check its an Integer?

Code:

public class Commands extends CommandExecute implements Listener, CommandExecutor {
 
    public String prefix = "§7[§6Simple Grenades§7] ";
 
 
    public String cmd1 = "simplegrenades";

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
     
     
        if(sender instanceof Player) {
         
         
            Player player = (Player) sender;
         
            if (cmd.getName().equalsIgnoreCase(cmd1)) {
                if (args.length == 0) {
                    player.sendMessage(prefix + "§cCorrect use: §7/sg [basic] [amount]");
                    return true;
                }
                else {
                    if (args[0].equalsIgnoreCase("basic")) {
                        if (args.length == 1) {
                            ItemStack item = new ItemStack(Material.FIREWORK_CHARGE, 1);
                            ItemMeta meta = item.getItemMeta();
                            ArrayList<String> lore = new ArrayList<String>();
                            lore.add("§cPower: §8[§71§8]");
                            meta.setLore(lore);
                            meta.setDisplayName("§aBasic Grenade");
                            item.setItemMeta(meta);
                            player.getInventory().addItem(item);
                        }
                        if (args.length == 2) { 
                            ItemStack item = new ItemStack(Material.FIREWORK_CHARGE, Integer.parseInt(args[1]));
                            ItemMeta meta = item.getItemMeta();
                            ArrayList<String> lore = new ArrayList<String>();
                            lore.add("§cPower: §8[§71§8]");
                            meta.setLore(lore);
                            meta.setDisplayName("§aBasic Grenade");
                            item.setItemMeta(meta);
                            player.getInventory().addItem(item);
                         
                        }
                 
                    }
                    else {
                        player.sendMessage(prefix + "§cCorrect use: §7/sg [basic] [amount]");
                        return true;
                }
                     
                }
            }
         
        }
        return true;
    }

}

 

@KyllianGamer

Code:Java

 
if (args.length == 1) {
    try {
        Integer.parseInt(args[0]);
        Integer amount = Integer.valueOf(args[0]);
        //Do something
    } catch (NumberFormatException e) {
        sender.sendMessage("Argument 1 needs to be a number! Usage: /cmd1 [amount]");
        return true;
    }
}
 

This is what i currently use and it works for me.

 

Thank you so much! It works perfectly! You are my angel :O I am already asking it like the hole day at a discord server and nobody was help me. Thank you so much!

 

@KyllianGamer Hehe, np. Glad i could help. Could you please change the title prefix to solved now?

 

Euh how? xD

NVM found it

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@KyllianGamer Thank you.