OOPS-lab-codes/EmployeeDatabase.java

import java.util.Scanner;

class Employee {

    String name;
    int empId;
    String department;
    int age;
    String designation;
    double salary;

    // Method to read employee details
    void readEmployee(Scanner sc) {
        System.out.print("Enter Name: ");
        name = sc.nextLine();

        System.out.print("Enter Employee ID: ");
        empId = sc.nextInt();
        sc.nextLine(); // consume newline

        System.out.print("Enter Department: ");
        department = sc.nextLine();

        System.out.print("Enter Age: ");
        age = sc.nextInt();
        sc.nextLine();

        System.out.print("Enter Designation: ");
        designation = sc.nextLine();

        System.out.print("Enter Salary: ");
        salary = sc.nextDouble();
        sc.nextLine();

        System.out.println("---------------------------------");
    }

    // Method to display employee details
    void displayEmployee() {
        System.out.println("Name: " + name);
        System.out.println("Employee ID: " + empId);
        System.out.println("Department: " + department);
        System.out.println("Age: " + age);
        System.out.println("Designation: " + designation);
        System.out.println("Salary: " + salary);
        System.out.println("---------------------------------");
    }
}

public class EmployeeDatabase {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = 5; // minimum 5 employees
        Employee[] emp = new Employee[n];

        // Read employee details
        for (int i = 0; i < n; i++) {
            System.out.println("\nEnter details of Employee " + (i + 1));
            emp[i] = new Employee();
            emp[i].readEmployee(sc);
        }

        // Display all employee details
        System.out.println("\n===== Employee Details =====");
        for (int i = 0; i < n; i++) {
            emp[i].displayEmployee();
        }

        // Calculate total salary of Sales department
        double salesTotal = 0;
        for (int i = 0; i < n; i++) {
            if (emp[i].department.equalsIgnoreCase("Sales")) {
                salesTotal += emp[i].salary;
            }
        }
        System.out.println("Total Salary of Sales Department: " + salesTotal);

        // Find highest paid Manager in Purchase department
        Employee highestPaidManager = null;

        for (int i = 0; i < n; i++) {
            if (
                emp[i].department.equalsIgnoreCase("Purchase") &&
                emp[i].designation.equalsIgnoreCase("Manager")
            ) {
                if (
                    highestPaidManager == null ||
                    emp[i].salary > highestPaidManager.salary
                ) {
                    highestPaidManager = emp[i];
                }
            }
        }

        // Display result
        if (highestPaidManager != null) {
            System.out.println(
                "\n===== Highest Paid Manager in Purchase Department ====="
            );
            highestPaidManager.displayEmployee();
        } else {
            System.out.println("\nNo Manager found in Purchase Department.");
        }

        sc.close();
    }
}