//EmployeeRecords.java

import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;

public class EmployeeRecords
{

    public static void main(String[] args)
    {
        Scanner scnr = new Scanner(System.in);
        // Stores all employee data
        ArrayList<EmployeeData> emplList = new ArrayList<EmployeeData>();
        EmployeeData emplData; // Stores info for one employee
        String userCommand;    // User defined add/print/quit command
        String emplFirstName;  // User defined employee first name
        String emplLastName;   // User defined employee last name
        Integer emplID;        // User defined employee ID
        Integer deptNum;       // User defined employee Dept
        int i;                 // Loop counter

        do
        {
            // Prompt user for input
            System.out.print
            (
                "\nEnter command 'a' to add new employee, "
                + "\n'p' to print all employees, 'q' to quit: "
            );
            userCommand = scnr.next();

            // Add new employee entry
            if (userCommand.equals("a"))
            {
                System.out.print("First Name: ");
                emplFirstName = scnr.next();
                System.out.print("Last Name: ");
                emplLastName = scnr.next();
                System.out.print("ID: ");
                emplID = scnr.nextInt();
                System.out.print("Department Number: ");
                deptNum = scnr.nextInt();
                emplData = new EmployeeData
                (
                    emplFirstName,
                    emplLastName,
                    emplID,
                    deptNum
                );
                emplList.add(emplData);
            }
            // Print all entries
            else if (userCommand.equals("p"))
            {

                // Sort employees by department number first
                // and name second
                Collections.sort(emplList);

                System.out.println("");
                System.out.println("Employees: ");
                // Access employee records
                for (i = 0; i < emplList.size(); ++i)
                {
                    System.out.println(emplList.get(i).toString());
                }
                System.out.println("");
            }
        }
        while (!userCommand.equals("q"));
    }
}