Java tutorial
import java.awt.Color; import java.awt.Component; import javax.swing.BorderFactory; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class Main { public static void main(String[] args) { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JPanel panel = new JPanel(); panel.setBorder(BorderFactory.createLineBorder(Color.RED)); BoxLayout mgr = new BoxLayout(panel, BoxLayout.Y_AXIS); panel.setLayout(mgr); for (int i = 0; i < 5; i++) { JButton button = new JButton("Remove Hello World " + (i + 1)); button.setAlignmentX(Component.CENTER_ALIGNMENT); button.addActionListener(e -> { panel.remove(button); panel.revalidate(); panel.repaint(); }); panel.add(button); } frame.add(panel); frame.pack(); frame.setVisible(true); } }