The assignment
Write a Java program that can be used to calculate the weekly salary for hourly paid employees. The program initially accepts the employee’s id, the number of hours worked, and the hourly pay rate. An employee may work additional hours. When this happens, the additional number of hours must be added to the original amount, and the salary is re-calculated. The program must output on separate lines the employee’s id number, the number of hours worked, the hourly pay rate, and the salary, for each employee. In addition, the program must also output the total amount of money paid out by the company.

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public class Payroll {

    // employee id
    private String employeeId;
    private double salary;

    // Instance variables for number of hours worked, and hourly rate of pay
    private double workedHour;
    private double hourlyRate;

    // Class variable for accumulating the weekly payroll.
    private static double totalPayout = 0;

    // A mutator instance method that calculates an employee salary,
    // and accumulates the weekly payroll
    public void calculateSalary() {
       salary = 0.0;
       salary = workedHour * hourlyRate;
       totalPayout += salary;

    * update working hour recalculate salary and total payment
    * @param hour
    public void increaseHours(double hour) {
       if (hour > 0) {
            double extra = hour * hourlyRate;
            salary += extra;
            workedHour += hour;
            totalPayout += extra;

    // Constructor that accepts the employee’s id number,
    // the number of hours worked, and the hourly rate per employee.
    public Payroll(String employeeId, double workedHour, double hourlyRate) {
       this.employeeId = employeeId;
       this.workedHour = workedHour;
       this.hourlyRate = hourlyRate;

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