JLabel responsiva, redimensionar conforme na largura/altura disponivel

ELabelFontResize.java

import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class ELabelFontResize extends JLabel {

    private Graphics g;

    public ELabelFontResize() {
        super();
        super.addComponentListener(new LabelListener());
    }

    public ELabelFontResize(String text) {
        super(text);
        super.addComponentListener(new LabelListener());
    }

    private class LabelListener extends ComponentAdapter {

        @Override
        public void componentResized(ComponentEvent e) {
            if (g == null) {
                return;
            }

            Font labelFont = ELabelFontResize.this.getFont();
            String labelText = ELabelFontResize.this.getText();

            int stringWidth = ELabelFontResize.this.getFontMetrics(labelFont).stringWidth(labelText);
            int componentWidth = ELabelFontResize.this.getWidth();

            double widthRatio = (double) componentWidth / (double) stringWidth;

            int newFontSize = (int) (labelFont.getSize() * widthRatio);
            int componentHeight = ELabelFontResize.this.getHeight();

            int fontSizeToUse = Math.min(newFontSize, componentHeight);

            setFont(labelFont.deriveFont(labelFont.getStyle(), fontSizeToUse));
            repaint();
        }
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        this.g = g;
    }

    public static void main(String[] args) throws Exception {
        EventQueue.invokeLater(() -> {
            ELabelFontResize label = new ELabelFontResize("Redimensionar com base na altura e largura do espaço disponivel.");
            JFrame frame = new JFrame("Resize label font");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            frame.getContentPane().add(label);

            frame.setSize(650, 100);
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        });
    }

}