import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import java.util.Scanner;



public class Hospital
 {

    /**
     * @param args
     */

public static void main(String[] args)
 {

        // TODO Auto-generated method stub

Map<Integer,Patient> patients=new HashMap<Integer,Patient>();

PatientFunction pf=new PatientFunction();

Patient p1=new Patient();

Calendar c=Calendar.getInstance();

Date d=new Date();
d.setMonth(d.getMonth()-1);

c.setTime(d);

p1.setAge(25);
p1.setName("Arg");
p1.setLastAppointment(c);

patients.put(p1.getPatientId(), p1);

Scanner s=new Scanner(System.in);


int ctr=0;

do
{

System.out.println("::::::::Hospital::::::::");

System.out.println("Enter 1.Add a patient 2.Update Patient 3.Search patient 4.Display patients or View status");

ctr=s.nextInt();
s.nextLine();

switch(ctr)
{

case 1:

Patient p=pf.addPatient();

if(p==null)

System.out.println("Incorrect input");

else

patients.put(p.getPatientId(), p);

break;

case 2:

System.out.println("Enter a patient ID");

int pid=s.nextInt();
s.nextLine();

if(patients.containsKey(pid))
{

Patient p2=pf.updatePatient(patients.get(pid));

if(p2!=null)

patients.put(p2.getPatientId(), p2);

else

System.out.println("Invalid input");    

}

else

{

System.out.println("Patient with the ID does not exist");
                    }

break;

case 3:

System.out.println("Enter a patient ID");

pid=s.nextInt();
s.nextLine();

if(patients.containsKey(pid))
{

pf.displayPatientDetails(patients.get(pid));

                    }

else

{

System.out.println("Patient with the ID does not exist");
                    }

break;

case 4:

if(patients.size()==0)

System.out.println("No patients in list");

else

{   
ArrayList<Patient> al=new ArrayList<Patient>(patients.values());
                        pf.displayAll(al);              
                    }

break;

}

System.out.println("Continue? Enter y or n");

if(s.nextLine().toLowerCase().equals("y"))

ctr=999;

}
while(ctr==999);

}


}


import java.util.Calendar;

import java.util.Date;



public class Patient 
{

static int lastId=10000;

private int patientId;

private String name;

private String address;

private int age;

private String sex;

private String illness;

private float amount;

private Calendar lastAppointment;



private String prescription;


public String getPrescription() 
{

return prescription;

}

public void setPrescription(String prescription) 
{

this.prescription = prescription;

}

public int getPatientId() 
{

return patientId;

}

public void setPatientId(int patientId) 
{

this.patientId = patientId;

}

public String getName() 
{

return name;

}

public void setName(String name) 
{

this.name = name;

}

public String getAddress() 
{

return address;

}

public void setAddress(String address) 
{

this.address = address;

}

public int getAge() 
{

return age;

}

public void setAge(int age) 
{

this.age = age;

}

public String getSex() 
{

return sex;

}

public void setSex(String sex) 
{

this.sex = sex;

}

public String getIllness() 
{

return illness;
}

public void setIllness(String illness) 
{

this.illness = illness;

}

public float getAmount() 
{

return amount;

}

public void setAmount(float amount) 
{

this.amount = amount;
}

public Calendar getLastAppointment() 
{

return lastAppointment;

}

public void setLastAppointment(Calendar lastAppointment) 
{

this.lastAppointment = lastAppointment;

}

public static int getLastId() 
{

return lastId;

}

public static void setLastId(int lastId) {
    Patient.lastId = lastId;
}

public Patient(){
    this.patientId=++Patient.lastId;

    lastAppointment=Calendar.getInstance();
}
}

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.Scanner;

public class PatientFunction 
{

    Scanner s=new Scanner(System.in);

    public Patient updatePatient(Patient p)
{

        int ctr=0;

        try
{


do 
{

System.out.println("::::Update Customer::::\n1.Name 2.Address 3.Age 4.Sex 5.Illness 6.Amount");

ctr=s.nextInt();s.nextLine();

switch(ctr)
{

case 1:

System.out.println("Current Name:: "+p.getName());
                    p.setName(s.nextLine());

break;

case 2:

System.out.println("Current Address:: "+p.getAddress());
                    p.setAddress(s.nextLine());

break;

case 3:

System.out.println("Current Age:: "+p.getAge());
                    p.setAge(Integer.parseInt(s.nextLine());

break;

case 4:

System.out.println("Current Sex:: "+p.getSex());
                    p.setSex(s.nextLine());

break;

case 5:

System.out.println("Current Illness:: "+p.getIllness());
                    p.setIllness(s.nextLine());

break;

case 6:

System.out.println("Current Amount:: "+p.getName());
                    p.setAmount(Float.parseFloat(s.nextLine()));

break;

}

Calendar c=Calendar.getInstance();

c.setTime(new Date());

p.setLastAppointment(c);

System.out.println("Update other details? Enter y or n");

if(s.nextLine().toLowerCase().equals("y"))

ctr=999;


}
while(ctr==999);

        }
catch(Exception e)
{

return null;

}



return p;

}

public Patient addPatient()
{


Patient p=new Patient();

try
{

System.out.println("Enter Name:: ");

p.setName(s.nextLine());


System.out.println("Enter Address:: ");

p.setAddress(s.nextLine());


System.out.println("Enter Age:: ");

p.setAge(Integer.parseInt(s.nextLine()));


System.out.println("Enter Sex:: ");

p.setSex(s.nextLine());


System.out.println("Enter Illness:: ");

p.setIllness(s.nextLine());


System.out.println("Enter Amount:: ");

p.setAmount(Float.parseFloat(s.nextLine()));

}

catch(Exception e)
{


return null;

}

return p;

}

public void displayPatientDetails(Patient p)
{

System.out.println(":::Customer Details:");

System.out.println("Customer ID:"+p.getPatientId());

System.out.println("Customer Name:"+p.getName());

System.out.println("Customer Age:"+p.getAge());

System.out.println("Customer Address:"+p.getAddress());

System.out.println("Customer Illness:"+p.getIllness());

System.out.println("Customer Amount:"+p.getAmount());

p.getLastAppointment().add(Calendar.DAY_OF_MONTH, 15);      

if(p.getLastAppointment().getTime().compareTo(new Date())>0)
System.out.println("Customer Status: Active");

else

System.out.println("Customer Status: InActive");

p.getLastAppointment().add(Calendar.DAY_OF_MONTH, -15);

}   

public void displayAll(ArrayList<Patient> pl)
{

for(int i=0;i<pl.size();i++)
{

Patient p=pl.get(i);

p.getLastAppointment().add(Calendar.DAY_OF_MONTH, 15);      

if(p.getLastAppointment().getTime().compareTo(new Date())>0)        
            System.out.println("Customer ID:: "+p.getPatientId()+"\t Name:"+p.getName()+"\tCustomer Status: Active");

else

System.out.println("Customer ID:: "+p.getPatientId()+"\t Name:"+p.getName()+"\tCustomer Status: InActive");

p.getLastAppointment().add(Calendar.DAY_OF_MONTH, -15);

    }

}

}