gistfile1.java

import java.util.ArrayList;
import java.util.List;

public class School {
	private List<SchoolClass> m_classes = new ArrayList<SchoolClass>();
	private List<SchoolRoom> m_rooms = new ArrayList<SchoolRoom>();
	
	public School() {
	}
	
	public void addSchoolClass(SchoolClass schoolClass) {
		m_classes.add(schoolClass);
	}
	
	public void addSchoolRoom(SchoolRoom room) {
		m_rooms.add(room);
	}
	
	public List<SchoolClass> getSchoolClasses() {
		return m_classes;
	}
	
	public List<SchoolRoom> getSchoolRooms() {
		return m_rooms;
	}
	
	public void print() {
		System.out.println("School info:");
		System.out.println("  Classes:");
		for (SchoolClass schoolClass : m_classes) {
			schoolClass.print();
		}
		System.out.println("  Rooms:");
		for (SchoolRoom schoolRoom : m_rooms) {
			schoolRoom.print();
		}
	}
}

Oh, nice. Hungarian notation. Haven't seen that in a while :)

Hehe. Just an example for a friend for his programming homework ;-)