private static void ExcuteUserCommand(String[] args)
	{
		if(args.length < 3) 
			System.out.println("Missing arguments for 'user' command!");
		else {
			switch(args[1])
			{
			case "add":
				if(TestUserAddArgs(args)) {					
					AddNewCustomer(args);					
				}
				break;
			case "change":
				if(TestUserChangeArgs(args)) {
					ChangeCustomer(args);
				}
				break;
			case "view":
				if(TestUserViewArgs(args)) {
					ViewCustomer(args[3]);
				}
				break;
			default:
				System.out.println("Wrong 'user' arguments!");
			}
		}
	}