How to give optionals args in commands?

Let's say, in a plugin, which has a command like /showme <playername>.
How would I define this <playername> in the method/command whatever.
This is a little bit of code, how would I implement this?:

Code:

                if(args[0].equals("n")) {
                    if (sender.hasPermission("whomode.use")){

                    //stuff

                    return true;
  
                    }else{
                        sender.sendMessage(red + "Wannabe admin?");
                    }
            }

 

You would define this in the OnCommand method of your command Executor...

 

Eh and how would I do this?

 

You would go into the existing onCommand method that handles showme and past the above code, above what is currently in the onCommand. Then put in a return statement at the end of each code brach. Return true if it was correct, false and it provides the usage in the yaml. This way if it has an argument it will run what is in the if statement. else it runs what the command originally was.

 

I think you are not getting what I want, correct me if Im wrong:
I want in my plugin to store the <playername> argument from the command /wm n <playername> into a string( the string already exists and is called wmplayername),
than reference that string for something in my database..here's my code:

Code:

    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args) {

        if(cmd.getName().equalsIgnoreCase("wm")) {

            if(args.length>0){

                //wm log -> displays every player gamemode
                if(args[0].equalsIgnoreCase("log")) {
                if (sender.hasPermission("whomode.use")){

                for( String index: WhoMode.database.getIndices().keySet()) {
                    WhoMode.ent = WhoMode.database.getArguments(index);
                    sender.sendMessage(red + WhoMode.ent.toString().toLowerCase());
                    }

                return true;

                }else{
                    sender.sendMessage(red + "Wannabe admin?");
                }
            }

                //wm n <name> -> displays the player from <name> + gamemode
                if(args[0].equalsIgnoreCase("n")) {    <--- Here comes the <playername> thing in the game
                    if (sender.hasPermission("whomode.use")){

                    // HERE COMES MY METHOD FOR THE DATABASE

                    return true;

                    }else{
                        sender.sendMessage(red + "Wannabe admin?");
                    }
            }

        }else{
            sender.sendMessage(red + "Use /wm log");
        }
        }
        return false;
    }

 

if (args.length >= 2) {
wmplayername = args[1];
}

 

I finally understand the args and stuff, yes!
thank you guys for helping.