├── DatabaseConnection.java
├── Main.java
├── PatientDAO.java
├── Doctor.java
├── Patient.java
└── Appointment.java


/DatabaseConnection.java:
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 1 | package Hospital;
 2 | 
 3 | import java.sql.*;
 4 | 
 5 | public class DatabaseConnection {
 6 |     private static final String URL = "jdbc:mysql://localhost:3306/hospital_db";
 7 |     private static final String USER = "root";
 8 |     private static final String PASSWORD = ""; 
 9 | 
10 |     public static Connection getConnection() throws SQLException {
11 |         return DriverManager.getConnection(URL, USER, PASSWORD);
12 |     }
13 | }
14 | 


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/Main.java:
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 1 | package Hospital;
 2 | 
 3 | public class Main {
 4 |     public static void main(String[] args) {
 5 |         Patient p1 = new Patient(1, "Krishna", 21, "Male");
 6 | 
 7 |         try {
 8 |             PatientDAO dao = new PatientDAO();
 9 |             dao.addPatient(p1);
10 |             System.out.println("Patient added successfully.");
11 |         } catch (Exception e) {
12 |             System.out.println("Error: " + e.getMessage());
13 |         }
14 |     }
15 | }
16 | 


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/PatientDAO.java:
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 1 | package Hospital;
 2 | 
 3 | import java.sql.*;
 4 | 
 5 | public class PatientDAO {
 6 |     public void addPatient(Patient patient) throws SQLException {
 7 |         Connection conn = DatabaseConnection.getConnection();
 8 |         String query = "INSERT INTO patients (id, name, age, gender) VALUES (?, ?, ?, ?)";
 9 |         PreparedStatement stmt = conn.prepareStatement(query);
10 |         stmt.setInt(1, patient.getId());
11 |         stmt.setString(2, patient.getName());
12 |         stmt.setInt(3, patient.getAge());
13 |         stmt.setString(4, patient.getGender());
14 |         stmt.executeUpdate();
15 |         stmt.close();
16 |         conn.close();
17 |     }
18 | }
19 | 


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/Doctor.java:
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 1 | package Hospital;
 2 | 
 3 | public class Doctor {
 4 |     private int id;
 5 |     private String name;
 6 |     private String specialization;
 7 | 
 8 |     public Doctor(int id, String name, String specialization) {
 9 |         this.id = id;
10 |         this.name = name;
11 |         this.specialization = specialization;
12 |     }
13 | 
14 |     public int getId() {
15 |         return id;
16 |     }
17 | 
18 |     public void setId(int id) {
19 |         this.id = id;
20 |     }
21 | 
22 |     public String getName() {
23 |         return name;
24 |     }
25 | 
26 |     public void setName(String name) {
27 |         this.name = name;
28 |     }
29 | 
30 |     public String getSpecialization() {
31 |         return specialization;
32 |     }
33 | 
34 |     public void setSpecialization(String specialization) {
35 |         this.specialization = specialization;
36 |     }
37 | }


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/Patient.java:
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 1 | package Hospital;
 2 | 
 3 | public class Patient {
 4 |     private int id;
 5 |     private String name;
 6 |     private int age;
 7 |     private String gender;
 8 | 
 9 |     public Patient(int id, String name, int age, String gender) {
10 |         this.id = id;
11 |         this.name = name;
12 |         this.age = age;
13 |         this.gender = gender;
14 |     }
15 | 
16 |     public int getId() {
17 |         return id;
18 |     }
19 | 
20 |     public void setId(int id) {
21 |         this.id = id;
22 |     }
23 | 
24 |     public String getName() {
25 |         return name;
26 |     }
27 | 
28 |     public void setName(String name) {
29 |         this.name = name;
30 |     }
31 | 
32 |     public int getAge() {
33 |         return age;
34 |     }
35 | 
36 |     public void setAge(int age) {
37 |         this.age = age;
38 |     }
39 | 
40 |     public String getGender() {
41 |         return gender;
42 |     }
43 | 
44 |     public void setGender(String gender) {
45 |         this.gender = gender;
46 |     }
47 | }


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/Appointment.java:
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 1 | package Hospital;
 2 | 
 3 | public class Appointment {
 4 |     private int id;
 5 |     private int patientId;
 6 |     private int doctorId;
 7 |     private String date;
 8 | 
 9 |     public Appointment(int id, int patientId, int doctorId, String date) {
10 |         this.id = id;
11 |         this.patientId = patientId;
12 |         this.doctorId = doctorId;
13 |         this.date = date;
14 |     }
15 | 
16 |     public int getId() {
17 |         return id;
18 |     }
19 | 
20 |     public void setId(int id) {
21 |         this.id = id;
22 |     }
23 | 
24 |     public int getPatientId() {
25 |         return patientId;
26 |     }
27 | 
28 |     public void setPatientId(int patientId) {
29 |         this.patientId = patientId;
30 |     }
31 | 
32 |     public int getDoctorId() {
33 |         return doctorId;
34 |     }
35 | 
36 |     public void setDoctorId(int doctorId) {
37 |         this.doctorId = doctorId;
38 |     }
39 | 
40 |     public String getDate() {
41 |         return date;
42 |     }
43 | 
44 |     public void setDate(String date) {
45 |         this.date = date;
46 |     }
47 | }


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