Thread: Please Help - Employee Payroll Project

Hi! I'm new to Java and I'm trying to build an employee payroll system that
1) Populate Employees
a. You should populate one of each of the following employees in your collection:
i. Hourly Employee
1. Prompt for Hours
2. Prompt for Rate
3. Make sure to calculate for overtime at time and a half
ii. Salary Employee
1. Prompt for Staff or Executive
2. Set Gross salary to $50,000 for staff and $100,000 for executives
iii. Commission Employee
1. Prompt for number of items sold
2. Prompt for unit price of item sold (we are selling widgets so just set a price of your choosing)
3. Commission Employees will get 50% of gross sales
2) Select Employee
a. Loop through your array and select the employee
b. Once the employee is selected you will get a menu inside of each Employee that allows you to select the following
i. Calculate Gross Pay
ii. Calculate Tax
iii. Calculate Net Pay
iv. Calculate Net Percent
v. Display Employee
3) Save Employees
a. Save the array or collection of Employees as a serialized object
b. Additionally you will save a file/report of each employee as a text file
4) Load Employee
a. You will load back in the serialized objects from the saved file
b. You should use a boolean variable that is set to true if you have loaded employees
i. This in turn would inform users and prevent them from populating employees if they select that option

Here is the code so far:

public class Employee
{
/*********************
Attributes
*********************/
float rate=30.0f;
float taxrate=0.2f;
int hours=45;
float gross=0.0f;
float tax=0.0f;
float net=0.0f;
float net_percent=0.0f;

//End Attributes

/********************
Constructors
********************/
public Employee()
{

}

/********************
Methods
********************/
public void menu()
{

}

public void computeGross()
{
gross=rate*hours;
}

protected void computeTax()
{
tax=gross*taxrate;
}

protected void computeNet()
{
net=gross-tax;
}

protected void computeNetperc()
{
net_percent=(net/gross)*100;
}

protected void displayEmployee()
{
System.out.println("Hours: " + new Integer(hours));
System.out.println("Rate: " + new Float(rate));
System.out.println("Gross: " + new Float(gross));
System.out.println("Net: " + new Float(net));
System.out.println("Net%: " + new Float(net_percent) + "%");
}
}

Hi! So when I run Payroll.java it works up until it prints out what type of employee the user is. Now I'm trying to get it to call the calcMenu method in Employee_3 class. This is my updated Payroll.java code

package employee_3;

import java.io.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.*;
/**
*
* @author KC
*/

public class Payroll
{
static Employee_3[] employeeArray = new Employee_3[3];

public static void main(String[] args)
{
Payroll sa = new Payroll();
sa.topMenu();
sa.saveEmployee();
}
private String employeeType_holdinput;

public void topMenu()
{
Scanner sc = new Scanner(System.in);

int input;
System.out.println("1) Populate Employee");
System.out.println("2) Select Employee");
System.out.println("3) Save Employee");
System.out.println("4) Load Employee");
do
{
input = sc.nextInt();
if(input == 1)
{
populateEmployee();
}
else if(input == 2)
{
selectEmployee();
}
else if(input == 3)
{
saveEmployee();
}
else
{
loadEmployee();
}
// add 5 for save_exit

}
while(input >= 1 && input <= 4);
}

public void populateEmployee()
{
String id_holdinput;

Scanner sc = new Scanner(System.in);

System.out.println("Please enter what type of employee you are:"
+ " C-Commission, H-Hourly S-Salary");

for(int i=0; i<1; i++)
{
String input = sc.next();
if(input.equalsIgnoreCase("S"))
{
System.out.println("You are a SALARY employee.");
employeeArray[0].calcMenu();
}
else if(input.equalsIgnoreCase("H"))
{
System.out.println("You are an HOURLY employee.");
employeeArray[1].calcMenu();
}
else if(input.equalsIgnoreCase("C"))
{
System.out.println("You are a COMMISSION employee.");
employeeArray[2].calcMenu();
}
else
{
System.out.println("Error.");
}
}

}
public void selectEmployee()
{
float ex1_holdinput;
Scanner sc = new Scanner(System.in);

System.out.println("Please enter your name so we can look you up:");
String secondinput = sc.next();
int index = -1;
for(int i = 0; i < employeeArray.length; i++)
{

if(employeeArray[i].getName().equalsIgnoreCase(secondinput))
{
index = i;
}
}

System.out.print("Enter Employee Type: ");
employeeType_holdinput = sc.next();
// was nextFloat ?
if(index == -1)
{
System.out.println("We didn't find your employee record,"
+ " please contact system administrator");
}
else
{
employeeArray[index].setName(employeeType_holdinput);
employeeArray[index].displayEmployee();
}
}

public void saveEmployee()
{
try
{
FileOutputStream fos = new FileOutputStream("EmployeeData.txt");
ObjectOutputStream oos = new ObjectOutputStream(fos);

oos.writeObject(employeeArray);
oos.flush();
fos.close();
}
catch (IOException e)
{
System.err.println(e);
}
}

public void loadEmployee()
{
try
{
FileInputStream fis = new FileInputStream("EmployeeData.txt");
ObjectInputStream ois = new ObjectInputStream(fis);
employeeArray = (Employee_3[])ois.readObject();
fis.close();
for(int i = 0; i < employeeArray.length; i++)
{
employeeArray[i].displayEmployee();
}
}
catch (IOException e)
{
System.err.println("An error was encounter please try again.");
topMenu();
}
catch( ClassNotFoundException cnfe)
{
System.err.println("File to load accounts was not found.");
topMenu();
}
}

private void writeNewEmployeeData()
{
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}

private void computeGross()
{
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}

private void computeTax()
{
throw new UnsupportedOperationException("Not supported yet.");
}

private void computeNet()
{
throw new UnsupportedOperationException("Not supported yet.");
}

private void computeNetperc()
{
throw new UnsupportedOperationException("Not supported yet.");
}

private void displayEmployee()
{
throw new UnsupportedOperationException("Not supported yet.");
}

}// end class Payroll

Originally Posted by John Joe

Why you need array to call method ?

 static Employee_3[] employeeArray = new Employee_3[3];

And show your Employee_3 class

This is the Employee_3 class:

package employee_3;

import java.io.Serializable;
import java.util.Scanner;

/**
*
* @author KC
*/
public class Employee_3 implements Serializable
{
private String Name;
public float employeeType;
//

public static int counter;

// added variables
float rate=30.0f;
float taxrate=0.2f;
int hours=45;
float gross=0.0f;
float tax=0.0f;
float net=0.0f;
float net_percent=0.0f;

public Employee_3() //constructor
{
}

public String getName()
{
return Name;
}

public void setName(String s)
{
Name = new String(s);
}

public void setemployeeType(float et)
{
employeeType = et;
}

public void computeGross()
{
gross = rate * hours;
}

protected void computeTax()
{
tax = gross * taxrate;
}

protected void computeNet()
{
net = gross - tax;
}

protected void computeNetperc()
{
net_percent = ( net / gross )* 100;
}

// employee calculations

public void calcMenu()
{
Scanner sc = new Scanner(System.in);
int input;
System.out.println("Please enter your id [first name and last initial]: ");
Name = sc.next();

do
{
System.out.println("0) Calculate Gross");
System.out.println("1) Calculate Tax");
System.out.println("2) Calculate Net");
System.out.println("3) Calculate Net Percent");
System.out.println("4) Display Employee");

input = sc.nextInt();
if(input == 0)
{
computeGross();
}
else if(input == 1)
{
computeTax();
}
else if(input == 2)
{
computeNet();
}
else if(input == 3)
{
computeNetperc();
}
else
{
displayEmployee();
}
}
while(input >= 0 && input <= 4);

}

protected void displayEmployee()
{
System.out.println("Name: " + Name);
System.out.println("Hours: " + hours);
System.out.println("Rate: " + rate);
System.out.println("Gross: " + gross);
System.out.println("Net: " + net);
System.out.println("Net%: " + net_percent + "%");
}
}

//} // end class Employee_3

--- Update ---

Originally Posted by John Joe

Why you need array to call method ?

 static Employee_3[] employeeArray = new Employee_3[3];

And show your Employee_3 class

It was suggested that I use an array