import java.awt.Container;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.text.DecimalFormat;
    import javax.swing.*;

        public class Lab14_frame extends JFrame {
            private JButton exitButton, clearButton;
            private JTextField txtAge, txtName, txtMileage;

            public Lab14_frame(){


                float mileage = 23.4055f;
                DecimalFormat dec = new DecimalFormat("##0.00");

                JFrame mainFrame = new JFrame();
                mainFrame.setTitle("Lab 11");
                mainFrame.setBounds(100, 300, 200, 200);


                JPanel mainPanel = new JPanel();

                JLabel lblName = new JLabel("First Name");
                mainPanel.add(lblName);
                txtName = new JTextField("Your First Name");
                mainPanel.add(txtName);

                JLabel lblAge = new JLabel("Last Name");
                mainPanel.add(lblAge);
                txtAge = new JTextField("Your Last Name");
                mainPanel.add(txtAge);

                JLabel lblMileage = new JLabel("Mileage");
                mainPanel.add(lblMileage);
                txtMileage = new JTextField("             "+dec.format(mileage));
                mainPanel.add(txtMileage);

                clearButton = new JButton("Clear");
                clearButton.addActionListener(new ExitClass());
                mainPanel.add(clearButton);
                exitButton = new JButton("Exit");
                exitButton.addActionListener(new ExitClass());
                mainPanel.add(exitButton);

                //mainPanel.add(btnExit);
                Container container = mainFrame.getContentPane();
                container.add(mainPanel);



                mainFrame.setVisible(true);
            }



        private class ExitClass implements ActionListener {
            @Override

                public void actionPerformed(ActionEvent e){
                    if(e.getSource().equals(exitButton)){System.exit(0);}
                    else{
                        txtAge.setText("");
                        txtMileage.setText("");
                        txtName.setText("");
                    }
                }

            }
        }