How can I make sure that in a command there is a command (/ roles) that by adding different args (doctor, soldier) gives me different answers?

There is my code on command:

Code (Text):

1.         if(cmd.getName().equalsIgnoreCase("roles")) {
2.             if (args.length == 1) {        
3.                 if (args[0].contains("0")) {        
4.                     sender.sendMessage(main.getInstance().getConfig().getString("ruolo.medico").replaceAll("&", "§"));    
5.             }
6.             }

Main code:

Code (Text):

1. package comr;
2.  
3. import org.bukkit.plugin.java.JavaPlugin;
4.  
5. public class chunk extends JavaPlugin {
6.  
7.     public static chunk plugin;
8.  
9.        public void onEnable() {    
10.            plugin = this;        
11.            getCommand("roles").setExecutor(new comand ());                
12.            this.saveDefaultConfig();        
13.        }
14.  
15.        public void onDisable() {
16.            System.out.println("§9a");
17.        }
18.          public static chunk getInstance() {
19.             return plugin;
20.     }
21.          public void onReload() {    
22.            reloadConfig();        
23.            plugin.getServer().getPluginManager().disablePlugin(plugin);
24.            plugin.getServer().getPluginManager().enablePlugin(plugin);              
25.        }
26. }
27.  

 

[QUOTE = "Blue, post: 53031, member: 6298"] Utilizza i metodi String # equals e String # equalsIgnoreCase e la lunghezza dell'array di argomenti. [/ QUOTE]
thanks youu