--- a/src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java	Thu Oct 10 19:27:21 2013 +0400
+++ b/src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java	Fri Oct 11 11:48:52 2013 +0400
@@ -538,6 +538,8 @@
         updateIconImages();
         updateFocusabilityForAutoRequestFocus(false);
 
+        boolean wasMaximized = isMaximized();
+
         // Actually show or hide the window
         LWWindowPeer blocker = (peer == null)? null : peer.getBlocker();
         if (blocker == null || !visible) {
@@ -571,16 +573,21 @@
         if (visible) {
             // Apply the extended state as expected in shared code
             if (target instanceof Frame) {
-                switch (((Frame)target).getExtendedState()) {
-                    case Frame.ICONIFIED:
-                        CWrapper.NSWindow.miniaturize(nsWindowPtr);
-                        break;
-                    case Frame.MAXIMIZED_BOTH:
-                        maximize();
-                        break;
-                    default: // NORMAL
-                        unmaximize(); // in case it was maximized, otherwise this is a no-op
-                        break;
+                if (!wasMaximized && isMaximized()) {
+                    // setVisible could have changed the native maximized state
+                    deliverZoom(true);
+                } else {
+                    switch (((Frame)target).getExtendedState()) {
+                        case Frame.ICONIFIED:
+                            CWrapper.NSWindow.miniaturize(nsWindowPtr);
+                            break;
+                        case Frame.MAXIMIZED_BOTH:
+                            maximize();
+                            break;
+                        default: // NORMAL
+                            unmaximize(); // in case it was maximized, otherwise this is a no-op
+                            break;
+                    }
                 }
             }
         }
@@ -927,6 +934,8 @@
             return;
         }
 
+        checkZoom();
+
         final Rectangle oldB = nativeBounds;
         nativeBounds = new Rectangle(x, y, width, height);
         if (peer != null) {
@@ -957,6 +966,17 @@
         }
     }
 
+    private void checkZoom() {
+        if (target instanceof Frame && isVisible()) {
+            Frame targetFrame = (Frame)target;
+            if (targetFrame.getExtendedState() != Frame.MAXIMIZED_BOTH && isMaximized()) {
+                deliverZoom(true);
+            } else if (targetFrame.getExtendedState() == Frame.MAXIMIZED_BOTH && !isMaximized()) {
+                deliverZoom(false);
+            }
+        }
+    }
+
     private void deliverNCMouseDown() {
         if (peer != null) {
             peer.notifyNCMouseDown();

--- a/src/macosx/native/sun/awt/AWTWindow.m	Thu Oct 10 19:27:21 2013 +0400
+++ b/src/macosx/native/sun/awt/AWTWindow.m	Fri Oct 11 11:48:52 2013 +0400
@@ -501,20 +501,6 @@
     // window exposing in _setVisible:(BOOL)
 }
 
-- (BOOL)windowShouldZoom:(NSWindow *)window toFrame:(NSRect)proposedFrame {
-AWT_ASSERT_APPKIT_THREAD;
-
-    [AWTToolkit eventCountPlusPlus];
-    JNIEnv *env = [ThreadUtilities getJNIEnv];
-    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
-    if (platformWindow != NULL) {
-        static JNF_MEMBER_CACHE(jm_deliverZoom, jc_CPlatformWindow, "deliverZoom", "(Z)V");
-        JNFCallVoidMethod(env, platformWindow, jm_deliverZoom, ![window isZoomed]);
-        (*env)->DeleteLocalRef(env, platformWindow);
-    }
-    return YES;
-}
-
 - (void) _deliverIconify:(BOOL)iconify {
 AWT_ASSERT_APPKIT_THREAD;
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/awt/Frame/MaximizedByPlatform/MaximizedByPlatform.java	Fri Oct 11 11:48:52 2013 +0400
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+ * @bug 8026143
+ * @summary [macosx] Maximized state could be inconsistent between peer and frame
+ * @author Petr Pchelko
+ * @run main MaximizedByPlatform
+ */
+
+import sun.awt.OSInfo;
+import sun.awt.SunToolkit;
+
+import java.awt.*;
+
+public class MaximizedByPlatform {
+    private static Frame frame;
+    private static Rectangle availableScreenBounds;
+
+    public static void main(String[] args) {
+        if (OSInfo.getOSType() != OSInfo.OSType.MACOSX) {
+            // Test only for macosx. Pass
+            return;
+        }
+
+        availableScreenBounds = getAvailableScreenBounds();
+
+        // Test 1. The maximized state is set in setBounds
+        try {
+            frame = new Frame();
+            frame.setBounds(100, 100, 100, 100);
+            frame.setVisible(true);
+
+            ((SunToolkit)Toolkit.getDefaultToolkit()).realSync();
+
+            frame.setBounds(availableScreenBounds.x, availableScreenBounds.y,
+                    availableScreenBounds.width, availableScreenBounds.height);
+
+            ((SunToolkit)Toolkit.getDefaultToolkit()).realSync();
+
+            if (frame.getExtendedState() != Frame.MAXIMIZED_BOTH) {
+                throw new RuntimeException("Maximized state was not set for frame in setBounds");
+            }
+        } finally {
+            frame.dispose();
+        }
+
+
+        // Test 2. The maximized state is set in setVisible
+        try {
+            frame = new Frame();
+            frame.setBounds(availableScreenBounds.x, availableScreenBounds.y,
+                    availableScreenBounds.width + 100, availableScreenBounds.height);
+            frame.setVisible(true);
+
+            ((SunToolkit)Toolkit.getDefaultToolkit()).realSync();
+
+            if (frame.getExtendedState() != Frame.MAXIMIZED_BOTH) {
+                throw new RuntimeException("Maximized state was not set for frame in setVisible");
+            }
+        } finally {
+            frame.dispose();
+        }
+    }
+
+    private static Rectangle getAvailableScreenBounds() {
+        final Toolkit toolkit = Toolkit.getDefaultToolkit();
+        final GraphicsEnvironment graphicsEnvironment =
+                GraphicsEnvironment.getLocalGraphicsEnvironment();
+        final GraphicsDevice graphicsDevice =
+                graphicsEnvironment.getDefaultScreenDevice();
+
+        final Dimension screenSize = toolkit.getScreenSize();
+        final Insets screenInsets = toolkit.getScreenInsets(
+                graphicsDevice.getDefaultConfiguration());
+
+        final Rectangle availableScreenBounds = new Rectangle(screenSize);
+
+        availableScreenBounds.x += screenInsets.left;
+        availableScreenBounds.y += screenInsets.top;
+        availableScreenBounds.width -= (screenInsets.left + screenInsets.right);
+        availableScreenBounds.height -= (screenInsets.top + screenInsets.bottom);
+        return availableScreenBounds;
+    }
+}