Custom Shaped Window

ShapedWindow.java

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

public class ShapedWindow implements ActionListener{
    ShapedPane pane = new ShapedPane();
    final static int INTERVAL = 1000;
    String[] tokens;
    int counter = 0;
    final Timer timer = new Timer(INTERVAL, this);
    
    public static void main(String[] args) {
        new ShapedWindow("You Are Awesome!");
        
    }

    public ShapedWindow(String sentance) {
        tokens = sentance.split(" ");
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (Exception ex) {
                }

                JWindow frame = new JWindow();
                frame.setBackground(new Color(0, 0, 0, 0));
                
                frame.setContentPane(pane);
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
                frame.setAlwaysOnTop(true);
                timer.start();
            }
        });
    }
    
    public void actionPerformed(ActionEvent evt) {
      pane.setTokenText(tokens[counter++ % tokens.length ]);
      pane.repaint();
    }

    public class ShapedPane extends JPanel {
        
        int width, height;
        String text = "";
        int fontSize = 70;
        int color = 0x32cd32;
        public ShapedPane() {
          
          setOpaque(false);
          setLayout(new GridBagLayout());
          
          Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
          width = (int)screenSize.getWidth();
          height = (int)screenSize.getHeight();
        }
        
        public void setTokenSize(int fontSize){
          this.fontSize = fontSize;
        }
        
        public void setTokenColor(int color){
          this.color = color;
        }
        
        public void setTokenText(String text){
          this.text = text;
        }

        @Override
        public Dimension getPreferredSize() {
          return new Dimension(width, height);
        }

        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g); //To change body of generated methods, choose Tools | Templates.
            Graphics2D g2d = (Graphics2D) g.create();
            RenderingHints hints = new RenderingHints(
                    RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            g2d.setRenderingHints(hints);
            
            g2d.setColor(new Color(color));
            g2d.setFont(new Font("Verdana", Font.PLAIN, fontSize));
            FontMetrics fm = g2d.getFontMetrics();
            Rectangle2D r = fm.getStringBounds(text, g2d);
            int x = (this.getWidth() - (int) r.getWidth()) / 2;
            int y = (this.getHeight() - (int) r.getHeight()) / 2 + fm.getAscent();
            g2d.drawString(text, x, y);
            g2d.dispose();
        }
    }

}