public abstract class ConsoleAction {
	public abstract String getCommand();
	public abstract void execute(String[] args);
}

commandLine.registerAction(new ConsoleAction() {

	@Override
	public String getCommand() {
		return "QUIT";
	}

	@Override
	public void execute(String[] args) {
		System.exit(0);
	}
});

#mainmenu
{

	text-align: center;
	width:100%;
	height: 40px;
	background-image: url(../images/navi.jpg) ;
	background-repeat: repeat-x;

}

#mainmenu ul {
	height: 40px;
	padding: 0;
	margin: 0;
	
	list-style: none;
}

#mainmenu a {
	display: block;
	width: 70;
	margin-top: 14px;

	
}

#mainmenu li {

	float: left;
	width: 10em;
list-style: none;

	

}



#mainmenu li ul {
	position: absolute;
	padding: 5px;
	width: 10em;
	left: -999em;

}

#mainmenu li:hover ul {
	left: auto;
}

#mainmenu li:hover ul, #mainmenu li.sfhover ul {
	left: auto;
}

package booking;

public interface Bookable
{
	public final static String DATE = "BOOK";
	public final static String DEVICE = "DEVICE";
	public final static String USER = "USER";
	public final static String ROOM = "ROOM";
	
	public String book(String... strExec);
}

package booking;

public class BookingDate implements Bookable
{

	@Override
	public String book(String... strExec)
	{
		String retVal = "Beginn Datum: " + strExec[0] + " ";
		retVal = "Ende Datum: " + strExec[1] + " ";
		return retVal;
	}

}

	Map<String,Bookable> map = new HashMap<String,Bookable>();
	
	{
		map.put(Bookable.DATE, new BookingDate());
		map.put(Bookable.DEVICE, new BookingDevice());
		map.put(Bookable.ROOM, new BookingRoom());
		map.put(Bookable.USER, new BookingUser());
	}
	
	public Main()
	{
		String userInput1 = "BOOK 12.01.10 13.01.10 DEVICE Beamer17 USER Horst";
		String userInput2 = "BOOK 15.02.11 21.02.11 ROOM 16.17 216 USER Horst Schlämmer";
		
		Scanner in = new Scanner(userInput2);
		in.useDelimiter(" ");
		
		String cmd = in.next();
		
		while(in.hasNext())
		{
			if(map.containsKey(cmd))
			{
				String param = in.next();
				List<String> paramList = new ArrayList<String>();
				while(!map.containsKey(param))
				{
					paramList.add(param);
					if(in.hasNext())
					{
						param = in.next();
					}
					else
					{
						break;
					}
				}
				
				System.out.println(map.get(cmd).book(paramList.toArray(new String[0])));
				// Parameter ist ein Command
				cmd = param;
			}
		}
	}

bla>bla>li:nth-child(1) ,
bla>bla>li:nth-child(1) * {background-color:red}
bla>bla>li:nth-child(2) ,
bla>bla>li:nth-child(2) * {background-color:green}
bla>bla>li:nth-child(3) ,
bla>bla>li:nth-child(3) * {background-color:blue}