Is there a way to create a JTable from a GUI very easily? I created a "Payroll Calculator" code with a GUI and need to populate the data into a row of a JTable, but I can't think of a way to accomplish this easily. The GUI code is below.

Java Code:
package payrollCalculator;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;

 * @author Antonio School
public class payrollCalculatorFrame extends JFrame{

    private JPanel employeeName; //Employee name panel
    private JPanel salary;       //Employee salary panel
    private JPanel hours;        //Employee hours panel
    private JComboBox departments;     //Departments combo box
    private JLabel empNameLabel;      //employee name label
    private JLabel empDeptLabel;      //employee department label
    private JLabel salaryLabel;   //employee Salary label
    private JLabel empHourLabel;
    private JTextField empName;
    private JTextField selectedDept; //The selected department
    public JTextField salaryValue;
    public JTextField hourValue;
    private JButton calcButton;
    private double hour;
    private double salAmt;
    private final JTable empData;
    Constructor for the GUI
    public payrollCalculatorFrame() {
        super("Payroll Calculator");
        setSize(700, 150);
        //default close operation
        //Layout manager
        setLayout(new BorderLayout());
        //build the panels
        //create panel employeeName
        employeeName = new JPanel();

        //label for employee text
        empNameLabel = new JLabel("Employee Name:");
        //Text Field to store employee new and last name
        empName = new JTextField("Employee Last, First Name");
        //label for employee text
        empDeptLabel = new JLabel("Employee Department:");
        //Combo box for department
        String[] departmentList = {"Accounting", "HR", "IT", "Legal", "Marketing", "Service Center"};
                JComboBox departments = new JComboBox(departmentList);
        //add components to panel
        employeeName.add(empNameLabel, BorderLayout.WEST);
        employeeName.add(empName, BorderLayout.EAST);
        employeeName.add(empDeptLabel, BorderLayout.WEST);
        employeeName.add(departments, BorderLayout.EAST);
        //create panel
        salary = new JPanel();
        //label for employee text
        salaryLabel = new JLabel("Hourly Rate:");
        //Text Field to store employee new and last name
        salaryValue = new JTextField();
        //add components to panel
        salary.add(salaryLabel, BorderLayout.WEST);
        salary.add(salaryValue, BorderLayout.EAST);
        //create panel
        hours = new JPanel();

        //label for employee hours
        empHourLabel = new JLabel("Hours Worked:");
        //Text Field to store employee new and last name
        hourValue = new JTextField();
        //add calculate button
        calcButton = new JButton ("Calculate");
        //add action listener to button
        calcButton.addActionListener(new CalcButtonListener());
        //add exit button
        JButton button = new JButton ("Close");
            button.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e)
        //add components to panel
        hours.add(empHourLabel, BorderLayout.WEST);
        hours.add(hourValue, BorderLayout.EAST);
        hours.add(calcButton, BorderLayout.PAGE_END);
        hours.add(button, BorderLayout.AFTER_LINE_ENDS);
        //add panels to content pane
        add(employeeName, BorderLayout.NORTH);
        add(salary, BorderLayout.CENTER);
        add(hours, BorderLayout.SOUTH);
        //create JTable to add the data from the GUI
        empData = new JTable();
        //pack and display

    private class CalcButtonListener implements ActionListener {

        public void actionPerformed(ActionEvent e) {
            double salary;
            double overtime;
            double totalPay;
            String sal1;
            String hr1;
            //Retrieve Salary amt
            sal1 = salaryValue.getText();
            salAmt = Double.parseDouble(sal1);
            //Retrieve Hours 
            hr1 = hourValue.getText();
            hour = Double.parseDouble(hr1);
            //debugging print message    
            System.out.println("Reading: " + sal1 + "Reading2: " + hr1 );            
            //calculate salary
            salary = (salAmt * 40);
            overtime = (hour - 40) * (salAmt * 1.5);
            totalPay = salary + overtime;
            //Create decimal format object
            DecimalFormat dollar = new DecimalFormat("0.00");
            //Display the total 
            JOptionPane.showMessageDialog(null, "Salary: $" + dollar.format(salary) + "\n" +
                    "Overtime: $" + dollar.format(overtime) + "\n" +
                    "Total Pay: $" + dollar.format(totalPay));

    public static void main(String[] args) {
        // TODO code application logic here
         new payrollCalculatorFrame();