I am wanting to build web-based testing tools for test website environments utilizing the Selenium Web Driver. I am building a GUI which will contain the following: Drop-down for selecting the website, toggle button for selecting the testing environment and a button for launching the specified browser you wish to test the previous criteria in. The drop-down for the website and the toggles will dynamically build a URL based off of the choices (not currently in this code).Example: I pick Google, then toggle I want to test on TestEnv1 and I want the program to launch the website on env1 using Firefox.Future goals:Drop-down implementation that can read the tests that are to be auto-ran which will have selenium tests created for them. This drop-down would be incorporated to allow nearly full-automation for testing.After creating my mock-up GUI and putting in some sample code my current version looks something similar to:package automationFramework;import java.awt.EventQueue;import java.awt.event.ActionEvent;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import javax.swing.JFrame;import javax.swing.JComboBox;import java.awt.BorderLayout;import javax.swing.JButton;import javax.swing.JRadioButton;import javax.swing.JToggleButton;import javax.swing.AbstractButton;import javax.swing.ButtonGroup;import javax.swing.ButtonModel;import javax.swing.DefaultButtonModel;import javax.swing.DefaultComboBoxModel;public class Dynamic_Browser_and_Site {    private JFrame frame;    public int n;    /**     * Launch the application.     */    public static void main(String[] args) {        EventQueue.invokeLater(new Runnable() {            public void run() {                try {                    Dynamic_Browser_and_Site window = new Dynamic_Browser_and_Site();                    window.frame.setVisible(true);                } catch (Exception e) {                    e.printStackTrace();                }            }        });    }    /**     * Create the application.     */    public Dynamic_Browser_and_Site() {        initialize();    }    /**     * Initialize the contents of the frame.     */    private void initialize() {        frame = new JFrame();        frame.setBounds(100, 100, 500, 250);        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        frame.getContentPane().setLayout(null);        // Site Drop-Down        JComboBox siteList = new JComboBox();        siteList.setToolTipText(Choose the website you would like to begin testing on.);        siteList.setModel(new DefaultComboBoxModel(new String[] {\Choose your site...\, Google, Yahoo, Microsoft, Apple}));        siteList.setMaximumRowCount(5);        siteList.setBounds(0, 0, 484, 20);        frame.getContentPane().add(siteList);        // Browser Buttons        JButton btnFF = new JButton(Firefox);        btnFF.setBounds(10, 146, 125, 55);        frame.getContentPane().add(btnFF);        btnFF.setEnabled(false);        JButton btnIE = new JButton(Internet Explorer);        btnIE.setBounds(349, 146, 125, 55);        frame.getContentPane().add(btnIE);        btnIE.setEnabled(false);        JButton btnCH = new JButton(Chrome);        btnCH.setBounds(180, 146, 125, 55);        frame.getContentPane().add(btnCH);        btnCH.setEnabled(false);        // Toggle Buttons        JToggleButton tglbtnEnv1 = new JToggleButton(TestEnv1);        tglbtnEnv1.setBounds(10, 65, 90, 55);        frame.getContentPane().add(tglbtnEnv1);        JToggleButton tglbtnEnv2 = new JToggleButton(TestEnv2);        tglbtnEnv2.setBounds(135, 65, 90, 55);        frame.getContentPane().add(tglbtnEnv2);        JToggleButton tglbtnEnv3 = new JToggleButton(TestEnv3);        tglbtnEnv3.setBounds(260, 65, 90, 55);        frame.getContentPane().add(tglbtnEnv3);        JToggleButton tglbtnEnv4 = new JToggleButton(TestEnv4);        tglbtnEnv4.setBounds(384, 65, 90, 55);        frame.getContentPane().add(tglbtnEnv4);        // Button Group Array for toggling environments        ButtonGroup group = new ButtonGroup();        group.add(tglbtnEnv1);        group.add(tglbtnEnv2);        group.add(tglbtnEnv3);        group.add(tglbtnEnv4);        // System.out.println(tglbtnEnv1.getAction());        // TestEnv1 toggle prompt        tglbtnEnv1.addItemListener(new ItemListener() {           public void itemStateChanged(ItemEvent ev) {              if(ev.getStateChange()==ItemEvent.SELECTED){                  System.out.println(tglbtnEnv1.getActionCommand( ));                  System.out.println(button is selected);                  // Toggle browser buttons                  btnFF.setEnabled(true);                  btnCH.setEnabled(true);                  btnIE.setEnabled(true);                  System.out.println(Firefox button enabled);                  System.out.println(Chrome button enabled);                  System.out.println(Internet Explorer button enabled);              } else{                System.out.println(button is not selected);              }           }        });        // TestEnv2 toggle prompt        tglbtnEnv2.addItemListener(new ItemListener() {           public void itemStateChanged(ItemEvent ev) {              if(ev.getStateChange()==ItemEvent.SELECTED){                  System.out.println(tglbtnEnv2.getActionCommand( ));                  System.out.println(button is selected);                  // Toggle browser buttons                  btnFF.setEnabled(true);                  btnCH.setEnabled(true);                  btnIE.setEnabled(true);                  System.out.println(Firefox button enabled);                  System.out.println(Chrome button enabled);                  System.out.println(Internet Explorer button enabled);              } else{                System.out.println(button is not selected);              }           }        });        // TestEnv3 toggle prompt        tglbtnEnv3.addItemListener(new ItemListener() {           public void itemStateChanged(ItemEvent ev) {              if(ev.getStateChange()==ItemEvent.SELECTED){                  System.out.println(tglbtnEnv3.getActionCommand( ));                  System.out.println(button is selected);                  // Toggle browser buttons                  btnFF.setEnabled(true);                  btnCH.setEnabled(true);                  btnIE.setEnabled(true);                  System.out.println(Firefox button enabled);                  System.out.println(Chrome button enabled);                  System.out.println(Internet Explorer button enabled);              } else{                System.out.println(button is not selected);              }           }        });        // TestEnv4 toggle prompt        tglbtnEnv4.addItemListener(new ItemListener() {           public void itemStateChanged(ItemEvent ev) {              if(ev.getStateChange()==ItemEvent.SELECTED){                  System.out.println(tglbtnEnv4.getActionCommand( ));                  System.out.println(button is selected);                  // Toggle browser buttons                  btnFF.setEnabled(true);                  btnCH.setEnabled(true);                  btnIE.setEnabled(true);                  System.out.println(Firefox button enabled);                  System.out.println(Chrome button enabled);                  System.out.println(Internet Explorer button enabled);              } else{                System.out.println(button is not selected);              }           }        });         }}I am wanting to know of any concerns or tips to further improve and optimize this code.
GUI for Selenium web testing
java;performance;selenium