User names are populated in lines 64-69

EmployeeSearchApp.java

package com.luv2code.jdbc.employeesearch.ui;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;

import java.awt.FlowLayout;

import javax.swing.JDialog;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JScrollPane;
import javax.swing.JTable;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JOptionPane;

import java.util.List;

import com.luv2code.jdbc.employeesearch.core.AuditHistory;
import com.luv2code.jdbc.employeesearch.core.Employee;
import com.luv2code.jdbc.employeesearch.core.User;
import com.luv2code.jdbc.employeesearch.dao.EmployeeDAO;
import javax.swing.border.LineBorder;
import java.awt.Color;

public class EmployeeSearchApp extends JFrame {

	private JPanel contentPane;
	private JTextField lastNameTextField;
	private JButton btnSearch;
	private JScrollPane scrollPane;
	private JTable table;

	private EmployeeDAO employeeDAO;
	private JPanel panel_1;
	private JButton btnAddEmployee;
	private JButton btnUpdateEmployee;
	private JButton viewHistoryButton;
	
	private int userId;
	private JPanel topPanel;
	private JPanel searchPanel;
	private JLabel lblLoggedIn;
	private JLabel loggedInUserLabel;
	
	
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {

					EmployeeDAO employeeDAO = new EmployeeDAO();
					
					// Get users
					List<User> users = employeeDAO.getUsers();

					// Show login dialog
					UserLoginDialog dialog = new UserLoginDialog();
					dialog.populateUsers(users);
					dialog.setEmployeeDAO(employeeDAO);
					
					dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
					dialog.setVisible(true);

				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public EmployeeSearchApp(int theUserId, EmployeeDAO theEmployeeDAO) {
		
		userId = theUserId;
		
		employeeDAO = theEmployeeDAO;
				
		setTitle("Employee Search App");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 584, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		contentPane.setLayout(new BorderLayout(0, 0));
		setContentPane(contentPane);
		
		JPanel panel = new JPanel();
		contentPane.add(panel, BorderLayout.NORTH);
		panel.setLayout(new BorderLayout(0, 0));
		
		topPanel = new JPanel();
		FlowLayout flowLayout_2 = (FlowLayout) topPanel.getLayout();
		flowLayout_2.setAlignment(FlowLayout.LEFT);
		panel.add(topPanel, BorderLayout.NORTH);
		
		lblLoggedIn = new JLabel("Logged In:");
		topPanel.add(lblLoggedIn);
		
		loggedInUserLabel = new JLabel("New label");
		topPanel.add(loggedInUserLabel);
		
		searchPanel = new JPanel();
		searchPanel.setBorder(null);
		FlowLayout flowLayout_1 = (FlowLayout) searchPanel.getLayout();
		flowLayout_1.setAlignment(FlowLayout.LEFT);
		panel.add(searchPanel);
		
		JLabel lblEnterLastName = new JLabel("Enter last name");
		searchPanel.add(lblEnterLastName);
		
		lastNameTextField = new JTextField();
		searchPanel.add(lastNameTextField);
		lastNameTextField.setColumns(10);
		
		btnSearch = new JButton("Search");
		searchPanel.add(btnSearch);
		btnSearch.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				// Get last name from the text field

				// Call DAO and get employees for the last name

				// If last name is empty, then get all employees

				// Print out employees				
				
				try {
					String lastName = lastNameTextField.getText();

					List<Employee> employees = null;

					if (lastName != null && lastName.trim().length() > 0) {
						employees = employeeDAO.searchEmployees(lastName);
					} else {
						employees = employeeDAO.getAllEmployees();
					}
					
					// create the model and update the "table"
					EmployeeTableModel model = new EmployeeTableModel(employees);
					
					table.setModel(model);
					
					/*
					for (Employee temp : employees) {
						System.out.println(temp);
					}
					*/
				} catch (Exception exc) {
					JOptionPane.showMessageDialog(EmployeeSearchApp.this, "Error: " + exc, "Error", JOptionPane.ERROR_MESSAGE); 
				}
				
			}
		});
		
		scrollPane = new JScrollPane();
		contentPane.add(scrollPane, BorderLayout.CENTER);
		
		table = new JTable();
		scrollPane.setViewportView(table);
		
		panel_1 = new JPanel();
		contentPane.add(panel_1, BorderLayout.SOUTH);
		
		btnAddEmployee = new JButton("Add Employee");
		btnAddEmployee.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				// create dialog
				EmployeeDialog dialog = new EmployeeDialog(EmployeeSearchApp.this, employeeDAO, userId);

				// show dialog
				dialog.setVisible(true);
			}
		});
		panel_1.add(btnAddEmployee);
		
		btnUpdateEmployee = new JButton("Update Employee");
		btnUpdateEmployee.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {

				// get the selected item
				int row = table.getSelectedRow();
				
				// make sure a row is selected
				if (row < 0) {
					JOptionPane.showMessageDialog(EmployeeSearchApp.this, "You must select an employee", "Error",
							JOptionPane.ERROR_MESSAGE);				
					return;
				}
				
				// get the current employee
				Employee tempEmployee = (Employee) table.getValueAt(row, EmployeeTableModel.OBJECT_COL);
				
				// create dialog
				EmployeeDialog dialog = new EmployeeDialog(EmployeeSearchApp.this, employeeDAO, 
															tempEmployee, true, userId);

				// show dialog
				dialog.setVisible(true);
			
			}
		});
		panel_1.add(btnUpdateEmployee);
		
		viewHistoryButton = new JButton("View History");
		viewHistoryButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				// get the selected item
				int row = table.getSelectedRow();
				
				// make sure a row is selected
				if (row < 0) {
					JOptionPane.showMessageDialog(EmployeeSearchApp.this, "You must select an employee", "Error",
							JOptionPane.ERROR_MESSAGE);				
					return;
				}
				
				// get the current employee
				Employee tempEmployee = (Employee) table.getValueAt(row, EmployeeTableModel.OBJECT_COL);

				try {
					// get audit history for this employee
					int employeeId = tempEmployee.getId();
					List<AuditHistory> auditHistoryList = employeeDAO.getAuditHistory(employeeId);

					// show audit history dialog
					AuditHistoryDialog dialog = new AuditHistoryDialog();
					dialog.populate(tempEmployee, auditHistoryList);
					
					dialog.setVisible(true);
				}
				catch (Exception exc) {
					exc.printStackTrace();
					JOptionPane.showMessageDialog(EmployeeSearchApp.this, "Error retrieving audit history", "Error",
							JOptionPane.ERROR_MESSAGE);				
					return;					
				}
				
			}
		});
		panel_1.add(viewHistoryButton);
	}

	public void refreshEmployeesView() {

		try {
			List<Employee> employees = employeeDAO.getAllEmployees();

			// create the model and update the "table"
			EmployeeTableModel model = new EmployeeTableModel(employees);

			table.setModel(model);
		} catch (Exception exc) {
			JOptionPane.showMessageDialog(this, "Error: " + exc, "Error",
					JOptionPane.ERROR_MESSAGE);
		}
		
	}

	public void setLoggedInUserName(String firstName, String lastName) {
		loggedInUserLabel.setText(firstName + " " + lastName);
	}
}