This is the FlatLaf Java/Swing look-and-feel from
https://mvnrepository.com/artifact/com.formdev and
https://github.com/JFormDesigner/FlatLaf/archive/refs/tags/3.7.2.tar.gz

It is covered by the Apache License 2.0 license.

The main jar has been built from source with the following patch:

diff -Nru FlatLaf-3.7/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java FlatLaf-3.7-patched/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java
--- FlatLaf-3.7/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java	2025-12-04 12:13:56.000000000 +0100
+++ FlatLaf-3.7-patched/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java	2026-01-26 22:52:11.575570940 +0100
@@ -380,9 +380,8 @@
 			JMenuBar menuBar = (JMenuBar) e.getSource();
 			JMenu menu = menuBar.getMenu( 0 );
 			if( menu != null ) {
-				MenuSelectionManager.defaultManager().setSelectedPath( SystemInfo.isWindows
-					? new MenuElement[] { menuBar, menu }
-					: new MenuElement[] { menuBar, menu, menu.getPopupMenu() } );
+				MenuSelectionManager.defaultManager().setSelectedPath(
+					new MenuElement[] { menuBar, menu, menu.getPopupMenu() } );
 
 				FlatLaf.showMnemonics( menuBar );
 			}


See also the demo application (which may be run via "java -jar ..."):
https://download.formdev.com/flatlaf/flatlaf-demo-latest.jar


        Makarius
        19-Sep-2026
