Solution: As we know any cinema associated with a number of theaters and each theater contains a set of rows with a number of seats and also each seats will have specification. Implementation: import java.io.Serializable; import java.security.InvalidParameterException; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; /** * */ /** * @author Abhinaw.Tripathi * */ class SeatSepecification implements Serializable,Cloneable { private HashMap<String,Object> features; public SeatSepecification() { features =new HashMap<>(); } public void addFeature(String featureLabel,Object featureValue) throws InvalidParameterException { if(featureValue == null) throw new InvalidParameterException("fetaure value cannot be null"); else features.put(featureLabel, featureValue); } public Object checkFeature(String featureLabel) { return features.get(featureLabel); } public boolean match(SeatSepecification givenSpec) { String currFeature; if(givenSpec == null) return false; else { Iterator it=givenSpec.features.keySet().iterator(); while(it.hasNext()) { currFeature=(String)it.next(); if(!features.get(currFeature).equals(givenSpec.features.get(currFeature))) return false; } return true; } } public SeatSepecification clone() { try { SeatSepecification c=(SeatSepecification)super.clone(); c.features=new HashMap<>(); Iterator it=features.keySet().iterator(); while(it.hasNext()) { String currFeatureLabel=(String)it.next(); Object currentFeatureValue=features.get(currFeatureLabel); c.features.put(currFeatureLabel, currentFeatureValue); } return c; } catch(CloneNotSupportedException e) { return null; } } } class Seat implements Serializable,Cloneable { private SeatSepecification spec; private String id; public Seat(String id) { this.id=id; spec=new SeatSepecification(); } public SeatSepecification getSpec() { return spec; } public void setSpec(SeatSepecification spec) { this.spec = spec; } public String getId() { return id; } public void setSeatSpecification(String featureLabel,Object featureValue) throws InvalidParameterException { spec.addFeature(featureLabel, featureValue); } public boolean match(SeatSepecification givenSpec) { return spec.match(givenSpec); } public boolean isReserved() { return true; } public Seat clone() { Seat cloneSeat=new Seat(id); return cloneSeat; } } class RowOfSeats implements Serializable,Cloneable { private HashMap<String,Seat> seats; private String rowId; private int numOfSeats; ArrayList<String> keys; public RowOfSeats(String rowId,int numOfSeats) throws InvalidParameterException { seats=new HashMap<>(); int i=0; Seat s; while(i<numOfSeats) { s=new Seat(Integer.toString(i)); seats.put(s.getId(), s); i++; } keys =new ArrayList<>(); this.rowId =rowId; this.numOfSeats=numOfSeats; } public void setSeatFeature(String seatID,String featureLabel,Object fetureValue) throws InvalidParameterException { if(seats.containsKey(seatID)) { Seat s=seats.get(seatID); s.setSeatSpecification(featureLabel, fetureValue); } else { throw new InvalidParameterException("no seat " + seatID); } } public String getRowId() { return rowId; } public int getNumOfSeats() { return seats.size(); } public void addSeat() { Seat s; numOfSeats +=1; s=new Seat(Integer.toString(numOfSeats)); seats.put(s.getId(), s); keys.add(Integer.toString(numOfSeats)); } public void removeSeat(String seatID) throws InvalidParameterException { if(seats.containsKey(seatID)) { seats.remove(seatID); } else { throw new InvalidParameterException("The specific seat not found!!!!"); } } public RowOfSeats clone() { RowOfSeats newRowOfSeats=(RowOfSeats) super.clone(); Iterator it=seats.keySet().iterator(); for(int i=0;i<=keys.size();i++) { String seatID=keys.get(i); while(it.hasNext()) { newRowOfSeats.put(seatID,seats.get(seatID).clone()); } } return newRowOfSeats; } } public class CinemaManagementSystemTest { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub } }
Need to add few more classes such as
1)SeatingChart Class
2)Theater Class
3)Movie Class
4)CineGoer Class=basically models a cinema goer.
5)Show Class
6)ReservationSpecification Class
7)Reservation Class
8)CinemaManagmentSystem
These are all classes which will be implemented using Serialization and Clonable .