Program Java Penjajaran (Alignment) Teks Dan Ikon Di Kelas JButton

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// Nama file : DemoHorizontalAlignment.java
// Mendemonstrasikan metoda sethorizontalAlignment

// Mengimpor kelas
import javax.swing.*;
import java.awt.*;
import java.net.URL;

// Deklarasi kelas
public class DemoHorizontalAlignment extends JFrame {

   public DemoHorizontalAlignment() {

      // Mengakses gambar ikon
      Class metaObject = this.getClass();
      URL urlLeft = metaObject.getResource("image2/alignleft.png");
      URL urlCenter = metaObject.getResource("image2/aligncenter.png");
      URL urlRight = metaObject.getResource("image2/alignright.png");

      ImageIcon iconLeft = new ImageIcon(urlLeft);
      ImageIcon iconCenter = new ImageIcon(urlCenter);      
      ImageIcon iconRight = new ImageIcon(urlRight);

      // Membuat obyek button
      JButton buttonLeft = new JButton("Left", iconLeft);
      buttonLeft.setHorizontalAlignment(SwingConstants.LEFT);

      JButton buttonCenter = new JButton("Center", iconCenter);
      buttonCenter.setHorizontalAlignment(SwingConstants.CENTER);

      JButton buttonRight = new JButton("Right", iconRight);
      buttonRight.setHorizontalAlignment(SwingConstants.RIGHT);

      getContentPane().setLayout(new GridLayout(1, 3));
      getContentPane().add(buttonLeft);
      getContentPane().add(buttonCenter);
      getContentPane().add(buttonRight);
   }

   // Metoda main
   public static void main(String[] args) {
      DemoHorizontalAlignment frame = new DemoHorizontalAlignment();
      frame.setTitle("Kelas DemoHorizontalAlignment");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setSize(450, 80);
      frame.setVisible(true);
   }
}