ADDITIONAL SYSTEM INFORMATION :
Running on an Azure VM

A DESCRIPTION OF THE PROBLEM :
Running on a VM in a CI/CD pipeline I get this error when running anything that requires Swing:
java.awt.HeadlessException: The application does not have desktop access, but this program performed an operation which requires it

If I add "-Djava.awt.headless=false" I get a slightly different error:
java.awt.AWTError: no screen devices

This works fine in Java 21.

I found this issue: https://bugs.openjdk.org/browse/JDK-8336862 which is still open. It mentions java 21 being affected even though it works for me.

REGRESSION : Last worked in version 21.0.8

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run any java swing application on a cloud VM.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No error
ACTUAL -
java.awt.HeadlessException: The application does not have desktop access, but this program performed an operation which requires it

---------- BEGIN SOURCE ----------
import javax.swing.*;
import java.util.Timer;
import java.util.TimerTask;

public class HelloWorld {
    public static void main(String[] args) {
        int autoCloseSeconds = 0;

        if (args.length > 0) {
            try {
                autoCloseSeconds = Integer.parseInt(args[0]);
                if (autoCloseSeconds < 0) {
                    System.err.println("Error: Auto-close seconds must be non-negative");
                    System.exit(1);
                }
            } catch (NumberFormatException e) {
                System.err.println("Error: Invalid number format for auto-close seconds");
                System.err.println("Usage: java HelloWorld [auto-close-seconds]");
                System.exit(1);
            }
        }

        JFrame frame = new JFrame("Hello World");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JLabel label = new JLabel("Hello World", JLabel.CENTER);
        frame.add(label);
        frame.pack();
        frame.setSize(300, 200);
        // Center the frame on screen
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        if (autoCloseSeconds > 0) {
            System.out.println("Window will close automatically in " + autoCloseSeconds + " seconds");
            Timer timer = new Timer();
            timer.schedule(new TimerTask() {
                @Override
                public void run() {
                    System.out.println("Auto-closing window...");
                    frame.dispose();
                    System.exit(0);
                }
            }, autoCloseSeconds * 1000);
        }
    }
}
---------- END SOURCE ----------