import javax.swing.JLabel;
import javax.swing.JOptionPane;
public class Main {
public static void main(String[] args) {
JLabel label = new JLabel("w3cschool.cn", JLabel.LEFT);
label.setHorizontalAlignment(JLabel.CENTER);
label.setVerticalAlignment(JLabel.CENTER);
//label.setHorizontalAlignment(JLabel.LEFT);
//label.setVerticalAlignment(JLabel.TOP);
//label.setHorizontalAlignment(JLabel.RIGHT);
//label.setVerticalAlignment(JLabel.BOTTOM);
JOptionPane.showMessageDialog(null, label);
}
}