On Windows we've had to put .dll files in the [JRE]\bin directory (same place where java.exe, etc. are) to get Java to see them automatically without having to muck with command line options …

Note that the JVM contains heuristics that determine the value of java.awt.headless if it's not explicitly set. For example, on Linux if the DISPLAY environment variable is not set, …

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.

Nov 3, 2012 · So, I have a frame(awt) with a button, and if you click "Sync" it makes a popup. Right now, I simply want it so you can click the X on that popup, and the popup will go away. I …

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.

Oct 4, 2013 · I'm attempting to perform a mouse click in Java, to click something in an external program. To do this, I'm using java.awt.robot, and the following code: Robot bot = new …

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) …

AWT is the original cross-platform, native-peer based GUI widget set. It drew a lot of complaints for not being perfectly consistent across platforms. Sun built the Swing widget set to answer …

Aug 28, 2012 · A frame is an AWT component (well this is the older classes for java GUI development) which uses native OS GUI support A JFrame is a Swing component which is the …

Oct 11, 2019 · JComponent is a swing component not an awt component. Also java.awt.Window doesn't extend javax.swing.JComponent but java.awt.Component.