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

public class JLabelTest { 
    public static void main(String[] args) { 
        SwingUtilities.invokeLater(() -> { 
            JFrame frame = new JFrame(); 
            JLabel label = new JLabel("????????????"); 
            label.setFont(new Font("Courier New", Font.PLAIN, 36)); 
            frame.add(label); 
            frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); 
            frame.pack(); 
            frame.setLocationRelativeTo(null); 
            frame.setVisible(true); 
        }); 

    } 
}