private void mainMenu() {
		System.out.println("Main menu:");
		System.out.println("0. Wait a few days");
		System.out.println("1. Send ship to barter");
		System.out.println("2. Build a new ship");
		System.out.println("3. Send ship out for repair");
		System.out.println("4. Send ship out for combat");
		System.out.print("Enter a choice: ");
		
		switch (scanner.nextInt()) {
		case 0:
			waitMenu();//Wait # of days
			break;
		case 1:
			sendShip();//Send ship out to trade
			break;
		case 2:
			buildShip();//Build ship
			break;
		case 3:
			//repairMenu();//send ship out for repair
			break;
		case 4:
			combatMenu();//send ship out for combat perhaps a fleet
			break;
		default:
			System.out.println("Invalid choice");
		}
	}