Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;

public class Main extends JPanel {

    private static final JLabel label = new JLabel("12345678901234567890", JLabel.CENTER);

    public Main() {
        this.setLayout(new GridLayout(0, 1));
        this.add(label);
        this.add(new JButton(new AbstractAction("OK") {

            @Override
            public void actionPerformed(ActionEvent e) {
                JButton b = (JButton) e.getSource();
                b.setText("123");
            }
        }));
        new Timer(100, new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                label.setText(String.valueOf(System.nanoTime()));
            }
        }).start();
    }

    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(new Main());
        f.pack();
        f.setVisible(true);
    }
}