سؤال عن أخطاء في كتابة class و مناداة ال methods في class آخر

السلام عليكم و رحمة الله و بركاته..

طلب مني حل Assignment.. و حاولت و لكن ظهرت أخطاء في كتابته..

و أريد منكم المساعدة إذا سمحتوا..

حاولت إرفاق ال class ولكني لم أستطع لذا نسخته هنا..

class Employee{

String empName;
int empHour , empRate;
double gross, tax, net;

public double computeGross(){
if (empHour<=40)
	gross= empHour*empRate;
	else
if (empHour>gross)
	gross=1200+(empHour-40)*50;
	else
	System.out.print("The employee hour is illegle!");
return gross;
}


public double computeTax(double gross){
	if (gross<1000)
		tax=1.5/100;
	else
	if (gross>1000&&gross<3000)
		tax=2.5/100;
	else
	if (gross>=30000)
		tax=4/100;
	else
		System.out.println("The salary is illegle");
	return tax;
}


public double computeNet(double gross ,double tax){
	net=gross-tax;
	return net;
}


Employee(String name ,int hour ,int rate){
empName=name;
empHour=hour;
empRate=rate;
}

}

وهذا class المناداة..

import javax.swing.*;
class TestEmployee{
public static void main (String []args){

String name=JOptionPane.showInputDialog("Enter the employee name:");

String userInput1=JOptionPane.showInputDialog("Enter how much the employee has of hours:");
int hour=Integer.parseInt(userInput1);

String userInput2=JOptionPane.showInputDialog("Enter how much the employee has of rate:");
int rate=Integer.parseInt(userInput2);

String userInput3=JOptionPane.showInputDialog("Enter how much the employee has of gross:");
double gross=Double.parseDouble(userInput3);

String userInput4=JOptionPane.showInputDialog("Enter The how much the employee has of tax:");
double tax=Double.parseDouble(userInput4);

Employee EmployeeName= new Employee(name, hour, rate);

JOptionPane.showMessageDialog(null,"The gross is:"+ EmployeeName.computeGross());
JOptionPane.showMessageDialog(null,"The tax is:"+EmployeeName.computeTax(gross));
JOptionPane.showMessageDialog(null,"The net salary is:"+EmployeeName.computeNet(gross, tax));


System.exit(0);
}
}

فضلا عند كتابة كود برمجي يرجى تظليله ومن ثم ضغط الزر #