Department.java

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package hospitalmanagementsystem;


import java.util.ArrayList;

public class Department {

    private int id;
    private String name;
    private ArrayList<Doctor>doctors; 
    private int capacity; 

    // Constructor: Initializes a department with a strict maximum capacity.
    // The capacity limit is crucial for managing hospital resources.
    public Department(int id, String name, int capacity) {
        this.id = id;
        this.name = name;
        this.capacity = capacity;
        this.doctors = new ArrayList<>();
    }

    // Critical Method: Adds a doctor to the department ONLY if there is space.
    // Returns 'true' if successful, or 'false' if the capacity limit has been reached.
    // This prevents overbooking staff in a single department.
    
    public boolean addDoctor(Doctor doctor) {
        if (doctors.size() >= capacity) {
            return false;
        }
        doctors.add(doctor);
        return true;
    }

    
    // Getters
    public int getId() { return id; }
    public String getName() { return name; }
    public ArrayList<Doctor> getDoctors() { return doctors; }
    public int getCapacity() { return capacity; }
    public int getDoctorCount() { return doctors.size(); }

    
    public void setId(int id) {
        this.id = id;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setDoctors(ArrayList<Doctor> doctors) {
        this.doctors = doctors;
    }

    public void setCapacity(int capacity) {
        this.capacity = capacity;
    }
    
    
    // Returns a summary string showing current occupancy vs. max capacity (e.g., "Doctors: 3/5").
    // Useful for displaying department status in the console menu.
    @Override
    public String toString() {
        return "ID: " + id + " | " + name + " | Doctors: " + doctors.size() + "/" + capacity;
    }
}