Swing1:

import java.awt.*;
import javax.swing.*;

class swingFrame extends JFrame {

private int lebar = 320;
private int tinggi = 100;


public swingFrame() {
setTitle("Judul Main Frame");
setSize(this.lebar, this.tinggi);
setLocation(200,200);
setResizable(false);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}

public class Swing {

public static void main(String[] args) {
swingFrame frame = new swingFrame();
frame.setVisible(false);
}
}


Swing2:
import java.awt.*;
import javax.swing.*;

class swingFrame extends JFrame {

private int lebar = 320;
private int tinggi = 100;

public swingFrame() {
Dimension screen= Toolkit.getDefaultToolkit().getScreenSize();
setTitle("Judul Main Frame");
setSize(this.lebar, this.tinggi);
setLocation((screen.width - this.lebar) / 2, (screen.height = this.tinggi) / 2);
setResizable(false);
setDefaultCloseOperation(EXIT_ON_CLOSE);

swingPanel panel = new swingPanel ();
Container cont = new Container();
cont = getContentPane();
cont.setLayout(null);
panel.setBounds(35, 20, 250, 25);
cont.add(panel);
}
}

class swingPanel extends JPanel {

private JButton tombol1 = new JButton("Nama tombol");
private JTextField text = new JTextField("");

public swingPanel() {
setLayout(new GridLayout(1, 2, 5, 5));
add(text);
add(tombol1);
}
}

public class Swing2 {

public static void main(String[] args) {
swingFrame frame = new swingFrame();
frame.setVisible(true);
}
}

Swing3:
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;

class swingFrame extends JFrame {

    private int lebar = 320;
    private int tinggi = 100;

    public swingFrame() {
        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
        setTitle("Swing Components");
        setSize(lebar, tinggi);
        setLocation((screen.width - this.lebar) / 2, (screen.height - this.tinggi) / 2);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setResizable(false);

        swingPanel panel = new swingPanel();
        Container cont = new Container();
        cont = getContentPane();
        cont.setLayout(null);
        panel.setBounds(35, 20, 250, 25);
        cont.add(panel);
    }
}

class swingPanel extends JPanel {

    private JButton tombol1 = new JButton("Cetak");
    private JTextField text = new JTextField("");

    public swingPanel() {
        tombol1.addActionListener(new tampilAction());
        setLayout(new GridLayout(1, 2, 5, 5));
        add(text);
        add(tombol1);
    }

    private class tampilAction implements ActionListener {

        public void actionPerformed(ActionEvent ae) {
            try {
                if (ae.getActionCommand().equals("Cetak")) {
                    JOptionPane.showMessageDialog(null, "Nama anda adalah " + text.getText(),
                            "Output", JOptionPane.INFORMATION_MESSAGE);
                }
            } catch (Exception e) {
            }
        }
    }
}

public class Swing3 {

    public static void main(String[] args) {
        swingFrame frame = new swingFrame();
        frame.setVisible(true);
    }
}