// No dependencies block needed for Robot itself
The Robot class relies on the underlying operating system’s graphics device. On Linux servers, Windows Server Core, or Docker containers without a GUI, java.awt.Robot will fail to initialize because GraphicsEnvironment.isHeadless() returns true . java.awt.robot jar file download
public class PixelDetector public static void main(String[] args) throws Exception Robot robot = new Robot(); Color pixel = robot.getPixelColor(100, 200); System.out.println("RGB at (100,200): " + pixel.getRed() + ", " + pixel.getGreen() + ", " + pixel.getBlue()); // No dependencies block needed for Robot itself
Install a virtual framebuffer (Xvfb) or ensure the DISPLAY environment variable is set. Windows Server Core
package. It has been a native citizen of the Java ecosystem since version 1.3. How to "Download" It (The Twist)