Jan 3, 2009 · AWT is a Java interface to native system GUI code present in your OS. It will not work the same on every system, although it tries. Swing is a more-or-less pure-Java GUI. It uses AWT to …

Dec 9, 2024 · Try modifying your application to handle AWT errors gracefully. Use GraphicsEnvironment.isHeadless () to determine the state dynamically and disable UI components in …

Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it. at java.awt.GraphicsEnvironment.

export JAVA_TOOL_OPTIONS='-Djava.awt.headless=true' After that if the problem still persists, removing all packages that may interfere may be a radical solution.

Now I just get "Exception in thread "main" java.awt.AWTError: Can't connect to X11 window server using 'localhost:1.0' as the value of the DISPLAY variable." on Ubuntu 16.04.

Dec 26, 2012 · I heard that when we use awt or swing, while creating a FRAME, an unchecked exception may be thrown which is "Headless exception". I never got this exception. Can anyone tell …

Aug 8, 2024 · The event dispatch thread is a special thread that is managed by AWT. Basically, it is a thread that runs in an infinite loop, processing events. The java.awt.EventQueue.invokeLater and …

Sep 9, 2011 · AWT, Swing and SWT are UI toolkits but I would certainly not call them "frameworks". Frameworks are based upon a given UI toolkit and provide the glue to build your application. First, …

Aug 15, 2013 · The answer below is mostly right. Start with the question slightly reworded. How do I change the font size of a g or g2d drawstring object? First create your g (or g2d) drawstring object …

There is already question like this link on StackOverflow and the accepted answer is "casting": Image image = ImageIO.read(new File(file)); BufferedImage buffered = (BufferedImage) image; In my pr...