Membuat JButton

//File Aplikasi.java

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;



public class Aplikasi extends JFrame {



public Aplikasi() {

setSize(300, 150);

setTitle("Contoh JButton");

Toolkit toolkit = getToolkit();

Dimension screen = toolkit.getScreenSize();

setLocation((screen.width-getWidth())/2, (screen.height-getHeight())/2);

setDefaultCloseOperation(EXIT_ON_CLOSE);

JPanel panel = new JPanel();

JButton exit = new JButton("Exit");

exit.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent ev) {

System.exit(0);

}

});

panel.add(exit);

getContentPane().add(panel);

}



public static void main(String[] args) {

Aplikasi aplikasi = new Aplikasi();

aplikasi.setVisible(true);

}

}

Menempatkan JFrame Di Tengah Layar Desktop

//File Aplikasi.java

import java.awt.*;

import javax.swing.*;



public class Aplikasi extends JFrame {



public Aplikasi() {

setSize(300, 150);

setTitle("Contoh JFrame Sederhana");

Toolkit toolkit = getToolkit();

Dimension screen = toolkit.getScreenSize();

setLocation((screen.width-getWidth())/2, (screen.height-getHeight())/2);

setDefaultCloseOperation(EXIT_ON_CLOSE);

}



public static void main(String[] args) {

Aplikasi aplikasi = new Aplikasi();

aplikasi.setVisible(true);

}

}

Membuat JFrame Sederhana

//file Aplikasi.java

<pre>
import javax.swing.*;

public class Aplikasi extends JFrame {

public Aplikasi() {
setSize(300, 150);
setTitle("Contoh JFrame Sederhana");
setDefaultCloseOperation(EXIT_ON_CLOSE);
}

public static void main(String[] args) {
Aplikasi aplikasi = new Aplikasi();
aplikasi.setVisible(true);
}
}
</pre>