What is wrong with this code please public class Employee $\{$ private String name; private double payRate; private int hoursWorked; public Employee$($String name, double payRate$)\{$ this.name $=$ name; this.payRate $=$ payRate; this.hoursWorked $=0$; $\}$ public String getName$()\{$ return name; $\}$ public double getPayRate$()\{$ return payRate; $\}$ public int getHoursWorked$()\{$ return hoursWorked; $\}$ public void setPayRate$($double payRate$)\{$ this.payRate $=$ payRate; $\}$ public void setHoursWorked$($int hoursWorked$)\{$ this.hoursWorked $=$ hoursWorked; $\}$ public double getSalary$()\{$ return payRate $*$ hoursWorked; $\}$ public static void main$($String$[]$ args$)\{$ Employee emp $=$ new Employee$("$John Doe", $15\mathrm{.}50)$; emp.setHoursWorked$(40)$; System.out.println$("$Employee Name: $"+$ emp.getName$())$; System.out.println$("$Pay Rate per Hour: $"+$ emp.getPayRate$())$; System.out.println$("$Hours Worked: $"+$ emp.getHoursWorked$())$; System.out.println$("$Weekly Gross Salary: $$"+$ emp.getSalary$())$; $\}\}$