--- old/modules/javafx.controls/src/main/java/javafx/scene/control/skin/MenuBarSkin.java	2017-06-07 14:34:28.246216255 +0530
+++ new/modules/javafx.controls/src/main/java/javafx/scene/control/skin/MenuBarSkin.java	2017-06-07 14:34:28.010216255 +0530
@@ -389,7 +389,8 @@
             if (e.getEventType() == KeyEvent.KEY_PRESSED) {
                 // Clear menu selection when ALT is pressed by itself
                 altKeyPressed = false;
-                if (e.getCode() == ALT && !e.isConsumed()) {
+                if ((e.getCode() == ALT || 
+                        e.getCode() == ALT_GRAPH) && !e.isConsumed()) {
                     if (focusedMenuIndex == -1) {
                         altKeyPressed = true;
                     }
@@ -398,7 +399,8 @@
             } else if (e.getEventType() == KeyEvent.KEY_RELEASED) {
                 // Put focus on the first menu when ALT is released
                 // directly after being pressed by itself
-                if (altKeyPressed && e.getCode() == ALT && !e.isConsumed()) {
+                if (altKeyPressed && (e.getCode() == ALT || 
+                        e.getCode() == ALT_GRAPH) && !e.isConsumed()) {
                     firstMenuRunnable.run();
                 }
                 altKeyPressed = false;
--- old/modules/javafx.controls/src/test/java/test/javafx/scene/control/MenuBarTest.java	2017-06-07 14:34:28.818216255 +0530
+++ new/modules/javafx.controls/src/test/java/test/javafx/scene/control/MenuBarTest.java	2017-06-07 14:34:28.562216255 +0530
@@ -618,4 +618,50 @@
         MenuBar menuBar = new MenuBar();
         MenuBarSkin menuBarSkin = new MenuBarSkin(menuBar);
     }
+
+    @Test public void testMenubarAltKeysupport() {
+        // First Menu gets selected when ALT key is pressed and released.
+        VBox root = new VBox();
+        Menu menu1 = new Menu("Menu1");
+        Menu menu2 = new Menu("Menu2");
+        Menu menu3 = new Menu("Menu3");
+
+        MenuItem menuItem1 = new MenuItem("MenuItem1");
+        MenuItem menuItem2 = new MenuItem("MenuItem2");
+        MenuItem menuItem3 = new MenuItem("MenuItem3");
+
+        menu1.getItems().add(menuItem1);
+        menu2.getItems().add(menuItem2);
+        menu3.getItems().add(menuItem3);
+
+        menuBar.getMenus().addAll(menu1, menu2, menu3);
+        root.getChildren().addAll(menuBar);
+        startApp(root);
+        tk.firePulse();
+
+        MenuBarSkin skin = (MenuBarSkin)menuBar.getSkin();
+        assertTrue(skin != null);
+
+        MenuButton mb = MenuBarSkinShim.getNodeForMenu(skin, 0);
+        mb.getScene().getWindow().requestFocus();
+        KeyEventFirer keyboard = new KeyEventFirer(mb.getScene());
+
+        // Left ALT key 
+        keyboard.doKeyPress(KeyCode.ALT);
+        tk.firePulse();
+        keyboard.doDownArrowPress();
+        tk.firePulse();
+        assertTrue(menu1.isShowing());
+
+        keyboard.doKeyPress(KeyCode.ESCAPE);
+        tk.firePulse();
+
+        // Right ALT key
+        keyboard.doKeyPress(KeyCode.ALT_GRAPH);
+        tk.firePulse();
+        keyboard.doDownArrowPress();
+        tk.firePulse();
+        assertTrue(menu1.isShowing()); 
+
+    }
 }