public void addID(String ID)
	{
		if(IDList.size() < MAXCAPACITY)
		{
			IDList.add(ID);
			
			if( ID.charAt(1) == 'M' )
					genderHist.set(0,new Integer(( (Integer)genderHist.get(0) ).intValue()+1) );
			else
				genderHist.set(1,new Integer(( (Integer)genderHist.get(1) ).intValue()+1) );
			
			int gradeHistIndex = Integer.parseInt( ID.substring(0,1) );
			gradesHist.set(gradeHistIndex, new Integer(( (Integer)gradesHist.get(gradeHistIndex) ).intValue()+1) );
			
		}
		else
		{
			System.out.println("Table " + tableNum + " already full.");
		}
		descendSortIDs();
		
	}