EmployeeDatabase.java

import java.util.Scanner;

 class EmpoyeeDatabase {
    public static void main(String[] args) {

        Employee[] employees = {new Employee("Mario Nintendo", 41, "Actor", 220000.0), new Employee("Peach Nintendo", 21, "Actor", 210000.0), new Employee("Pacman Pacman", 20, "Actor", 230000.0), new Employee("Minecraft Minecraft", 10, "Gamer", 280000.0)};

        boolean stillRunning = true;
        int choice;

        while (stillRunning == true) {

            choice = menuChoice();

            switch (choice) {
                case 1:
                    printAllEmployees(employees);
                    break;
                case 2:
                    System.out.println(printEmployeeOfName(employees));
                    enterToContinue();
                    break;
                case 3:
                    increaseSalary(employees);
                    break;
                case 9:
                    stillRunning = false;
                    break;
                default:
                    System.out.println("This number is invalid");
            }

        }

        quitProgram();
    }




    private static int menuChoice(){
        Scanner input = new Scanner(System.in);

        System.out.println("\n\n\nChoose a number and press Enter: \n");
        System.out.println("********************************************************\n");
        System.out.println("[1] Print all employees \t\t   [2] Print employee: enter name ");
        System.out.println("[3] Print employee: enter age \t\t [4] Print employee: enter designation ");
        System.out.println("[5] Print Employee: enter salary range \t\t [6] Increase employee salary" );
        System.out.println("[9] Quit");
        System.out.println("\n********************************************************");

        return input.nextInt();
    }

    private static void printAllEmployees(Employee[] emps){
        System.out.println("Here is a list of all employees: \n");
        for (int i = 0; i<emps.length; i++){
            System.out.println(emps[i]);
        }

        enterToContinue();
    }

    private static String printEmployeeOfName(Employee[] emps){


        String name;

        boolean found = false;
        Scanner input = new Scanner(System.in);

        System.out.println("Enter the name of the employee that you would like to find:");
        name = input.nextLine();


        for (int i=0;i<emps.length;i++){
            if ((emps[i].getName()).equals(name)) {
                return emps[i].toString();
            }

        }
        return "Employee not found";

    }

    private static String printEmployeeOfAge(Employee[] emps){

        int age;
        boolean found = false;
        Scanner input = new Scanner(System.in);

       System.out.println("Enter the age of the employee that you would like to find:");
        age = input.nextInt();

        for (int i=0;i<emps.length;i++){
            if ((emps[i].getAge()) == age) {
                return emps[i].toString();
            }

        }
        return "Employee not found";

    }


    private static void increaseSalary(Employee[] emps){
        Scanner input = new Scanner(System.in);
        String  name;
        int percentage;
        boolean employeeExists = false;
        double currentSalary, newSalary;

        System.out.println("Enter the name of the employee that will receive a salary increase:");
        name = input.nextLine();

        for(int i = 0;i<emps.length;i++){
            if (emps[i].getName().equals(name)){
                employeeExists = true;
                System.out.println(name + "'s current salary is: " + emps[i].getSalary());
                System.out.println("Enter the percentage increase as am integer:");
                percentage = input.nextInt();

                currentSalary = emps[i].getSalary();
                newSalary = currentSalary + ((percentage * currentSalary)/100);
                emps[i].setSalary(newSalary);

                System.out.println("Current salary: " + currentSalary);
                System.out.println("New salary: " + newSalary);
                System.out.println("Salary increase: " + (newSalary - currentSalary));

            }
        }
        if (!employeeExists){
            System.out.println("The employee you entered doesn't exist here.");
        }
        enterToContinue();

    }

    private static void enterToContinue(){
        Scanner getEnter = new Scanner(System.in);
        System.out.println("Press enter to continue");
        getEnter.nextLine();
    }

    private static void quitProgram(){
        System.out.println("Thank you and goodbye!");
    }


}