Cronometer[ENG].java

package engGUI;

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.*;
import javax.swing.border.EmptyBorder;

public class Cronometer extends JFrame {
    public static JLabel Second = new JLabel("0");
    public static JLabel Minute = new JLabel("0");
    public static JLabel Millisecond = new JLabel("0");
    public static JLabel Hour = new JLabel("0");
    private static final long serialVersionUID = 3693589152282728416L;
    private JPanel contentPane;
    public static int al = 0;

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Cronometer frame = new Cronometer();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public Cronometer() {
        Timer time = new Timer(20, new Timer1());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 300);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        JScrollPane scrollPane = new JScrollPane();
        scrollPane.setBounds(10, 141, 301, 110);
        contentPane.add(scrollPane);

        JTextArea textArea = new JTextArea();
        scrollPane.setViewportView(textArea);

        Hour.setHorizontalAlignment(SwingConstants.CENTER);
        Hour.setBounds(10, 10, 40, 25);
        contentPane.add(Hour);

        Minute.setHorizontalAlignment(SwingConstants.CENTER);
        Minute.setBounds(70, 10, 40, 25);
        contentPane.add(Minute);

        Second.setHorizontalAlignment(SwingConstants.CENTER);
        Second.setBounds(130, 10, 40, 25);
        contentPane.add(Second);

        JButton btnNewButton = new JButton("Start");
        btnNewButton.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                if (time.isRunning()) {
                    time.stop();
                    btnNewButton.setText("Start");
                } else {
                    time.start();
                    btnNewButton.setText("Stop");
                }

            }
        });
        btnNewButton.setBounds(296, 11, 89, 23);
        contentPane.add(btnNewButton);

        JButton btnNewButton_1 = new JButton("Clear");
        btnNewButton_1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                time.stop();
                Hour.setText("0");
                Minute.setText("0");
                Second.setText("0");
                Millisecond.setText("0");
                btnNewButton.setText("Start");
            }
        });
        btnNewButton_1.setBounds(296, 45, 89, 23);
        contentPane.add(btnNewButton_1);

        JButton btnSalva = new JButton("Save");
        btnSalva.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                al++;
                textArea.setText(textArea.getText().toString() + "#" + al + " "
                        + Hour.getText() + " : " + Minute.getText() + " : "
                        + Second.getText() + " : " + Millisecond.getText()
                        + "\n");
            }
        });
        btnSalva.setBounds(296, 75, 89, 23);
        contentPane.add(btnSalva);

        Millisecond.setHorizontalAlignment(SwingConstants.CENTER);
        Millisecond.setBounds(190, 10, 40, 25);
        contentPane.add(Millisecond);

        JLabel label_4 = new JLabel(":");
        label_4.setHorizontalAlignment(SwingConstants.CENTER);
        label_4.setBounds(40, 10, 40, 25);
        contentPane.add(label_4);

        JLabel label_5 = new JLabel(":");
        label_5.setHorizontalAlignment(SwingConstants.CENTER);
        label_5.setBounds(100, 10, 40, 25);
        contentPane.add(label_5);

        JLabel label_6 = new JLabel(":");
        label_6.setHorizontalAlignment(SwingConstants.CENTER);
        label_6.setBounds(160, 10, 40, 25);
        contentPane.add(label_6);

        JButton btnNewButton_2 = new JButton("Clear");
        btnNewButton_2.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                textArea.setText("");
                al = 0;
                al = 0;
            }
        });
        btnNewButton_2.setBounds(335, 228, 89, 23);
        contentPane.add(btnNewButton_2);

    }
}

class Timer1 implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        int a = Integer.parseInt(Cronometer.Millisecond.getText());
        int b = Integer.parseInt(Cronometer.Second.getText());
        int c = Integer.parseInt(Cronometer.Minute.getText());
        int d = Integer.parseInt(Cronometer.Hour.getText());
        a++;
        a++;
        if (a >= 100) {
            b++;
            a = 0;
        }
        if (b >= 60) {
            c++;
            b = 0;
        }
        if (c >= 60) {
            d++;
            c = 0;
        }
        Cronometer.Millisecond.setText(Integer.toString(a));
        Cronometer.Second.setText(Integer.toString(b));
        Cronometer.Minute.setText(Integer.toString(c));
        Cronometer.Hour.setText(Integer.toString(d));

    }

}