Phonetic Tool GUI

/*
* Text generated by Simple GUI Extension for BlueJ
*/
import javax.swing.UIManager.LookAndFeelInfo;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import javax.swing.border.Border;
import javax.swing.*;

/** GUI for Phonetic Tool.
 * @author jdalbey
 * @version 4 Feb 2015
 */
public class PhoneticToolGUI extends JFrame
{

    private JMenuBar menuBar;
    private JButton btnClear;
    private JButton btnNew;
    private JButton btnNext;
    private JButton btnShowAll;
    private JPanel panel1;
    private JTextField txtSentence;
    private JTextArea txtWords;

    //Constructor
    public PhoneticToolGUI()
    {

        setTitle("Phonetic Tool");
        setSize(509,237);
        //menu generate method
        generateMenu();
        setJMenuBar(menuBar);

        //pane with null layout
        JPanel contentPane = new JPanel(null);
        contentPane.setPreferredSize(new Dimension(509,237));
        contentPane.setBackground(new Color(192,192,192));


        btnClear = new JButton();
        btnClear.setBounds(395,48,90,35);
        btnClear.setBackground(new Color(214,217,223));
        btnClear.setForeground(new Color(0,0,0));
        btnClear.setEnabled(true);
        btnClear.setFont(new Font("DejaVu Sans",0,12));
        btnClear.setText("clear");
        btnClear.setVisible(true);

        btnNew = new JButton();
        btnNew.setBounds(255,49,131,35);
        btnNew.setBackground(new Color(214,217,223));
        btnNew.setForeground(new Color(0,0,0));
        btnNew.setEnabled(true);
        btnNew.setFont(new Font("DejaVu Sans",0,12));
        btnNew.setText("new sentence");
        btnNew.setVisible(true);

        btnNext = new JButton();
        btnNext.setBounds(12,51,130,34);
        btnNext.setBackground(new Color(214,217,223));
        btnNext.setForeground(new Color(0,0,0));
        btnNext.setEnabled(true);
        btnNext.setFont(new Font("DejaVu Sans",0,12));
        btnNext.setText("show next letter");
        btnNext.setVisible(true);

        btnShowAll = new JButton();
        btnShowAll.setBounds(154,50,90,35);
        btnShowAll.setBackground(new Color(214,217,223));
        btnShowAll.setForeground(new Color(0,0,0));
        btnShowAll.setEnabled(true);
        btnShowAll.setFont(new Font("DejaVu Sans",0,12));
        btnShowAll.setText("show all");
        btnShowAll.setVisible(true);

        panel1 = new JPanel(null);
        panel1.setBorder(BorderFactory.createEtchedBorder(1));
        panel1.setBounds(5,5,494,215);
        panel1.setBackground(new Color(214,217,223));
        panel1.setForeground(new Color(0,0,0));
        panel1.setEnabled(true);
        panel1.setFont(new Font("DejaVu Sans",0,12));
        panel1.setVisible(true);

        txtSentence = new JTextField();
        txtSentence.setBounds(7,11,477,33);
        txtSentence.setBackground(new Color(255,255,255));
        txtSentence.setForeground(new Color(0,0,0));
        txtSentence.setEnabled(true);
        txtSentence.setFont(new Font("DejaVu Sans",0,12));
        txtSentence.setText("sentence");
        txtSentence.setVisible(true);

        txtWords = new JTextArea();
        txtWords.setBounds(13,89,468,120);
        txtWords.setBackground(new Color(255,255,255));
        txtWords.setForeground(new Color(0,0,0));
        txtWords.setEnabled(true);
        txtWords.setFont(new Font("DejaVu Sans",0,12));
        txtWords.setText("");
        txtWords.setBorder(BorderFactory.createBevelBorder(1));
        txtWords.setVisible(true);

        //adding components to contentPane panel
        panel1.add(btnClear);
        panel1.add(btnNew);
        panel1.add(btnNext);
        panel1.add(btnShowAll);
        contentPane.add(panel1);
        panel1.add(txtSentence);
        panel1.add(txtWords);

        //adding panel to JFrame and seting of window position and close operation
        getContentPane().add(contentPane);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        pack();
        setVisible(true);
    }

    //method for generate menu
    public void generateMenu()
    {
        menuBar = new JMenuBar();
    }



     public static void main(String[] args)
     {
        System.setProperty("swing.defaultlaf", "com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run()
            {
                new PhoneticToolGUI();
            }
        });
    }

}