import java.util.*; import java.util.zip.*; import java.util.List; import java.util.regex.*; import java.util.concurrent.*; import java.util.concurrent.atomic.*; import java.util.concurrent.locks.*; import java.util.function.*; import javax.swing.*; import javax.swing.event.*; import javax.swing.text.*; import javax.swing.table.*; import java.io.*; import java.net.*; import java.lang.reflect.*; import java.lang.ref.*; import java.lang.management.*; import java.security.*; import java.security.spec.*; import java.awt.*; import java.awt.event.*; import java.awt.image.*; import java.awt.geom.*; import javax.imageio.*; import java.math.*; class main { // FlatLAF public static void main(final String[] args) throws Exception { com.formdev.flatlaf.FlatLightLaf.setup(); var screens = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices(); System.out.println("Detected " + screens.length + " screen(s)"); for (int iScreen = 0; iScreen < screens.length; iScreen++) { var screen = screens[iScreen].getDefaultConfiguration().getBounds(); // place window in center of screen JWindow window = new JWindow(); window.setBounds( screen.x+screen.width/4, screen.y+screen.height/4, screen.width/2, screen.height/2); // faint (mostly translucent) blue background window.setBackground(new Color(0, 0, 255, 64)); window.setAlwaysOnTop(true); var label = new JLabel("Screen " + (iScreen+1) + " of " + screens.length); label.setHorizontalAlignment(JLabel.CENTER); window.add(label); window.setVisible(true); } System.out.println("Will exit in 10"); Thread.sleep(10000); System.exit(0); }}