8344667: Remove most uses of AWT Permissions from the desktop module

Reviewed-by: azvegint, kizune

src/java.desktop/macosx/classes/sun/awt/CGraphicsDevice.java

@@ -25,7 +25,6 @@
 
 package sun.awt;
 
-import java.awt.AWTPermission;
 import java.awt.DisplayMode;
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsDevice;
@@ -62,8 +61,6 @@ public final class CGraphicsDevice extends GraphicsDevice
     private static boolean oglPipelineEnabled = false;
 
 
-    private static AWTPermission fullScreenExclusivePermission;
-
     // Save/restore DisplayMode for the Full Screen mode
     private DisplayMode originalMode;
     private DisplayMode initialMode;
@@ -260,23 +257,6 @@ public final class CGraphicsDevice extends GraphicsDevice
      */
     @Override
     public boolean isFullScreenSupported() {
-        return isFSExclusiveModeAllowed();
-    }
-
-    private static boolean isFSExclusiveModeAllowed() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            if (fullScreenExclusivePermission == null) {
-                fullScreenExclusivePermission =
-                    new AWTPermission("fullScreenExclusive");
-            }
-            try {
-                security.checkPermission(fullScreenExclusivePermission);
-            } catch (SecurityException e) {
-                return false;
-            }
-        }
         return true;
     }
 

src/java.desktop/share/classes/java/applet/Applet.java

@@ -25,7 +25,6 @@
 
 package java.applet;
 
-import java.awt.AWTPermission;
 import java.awt.Dimension;
 import java.awt.GraphicsEnvironment;
 import java.awt.HeadlessException;
@@ -127,12 +126,6 @@ public class Applet extends Panel {
      * @param  stub the new stub
      */
     public final void setStub(AppletStub stub) {
-        if (this.stub != null) {
-            SecurityManager s = System.getSecurityManager();
-            if (s != null) {
-                s.checkPermission(new AWTPermission("setAppletStub"));
-            }
-        }
         this.stub = stub;
     }
 

src/java.desktop/share/classes/java/awt/Dialog.java

@@ -33,7 +33,6 @@ import java.awt.peer.DialogPeer;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.Serial;
-import java.security.AccessControlException;
 import java.util.Iterator;
 import java.util.concurrent.atomic.AtomicLong;
 
@@ -42,7 +41,6 @@ import javax.accessibility.AccessibleRole;
 import javax.accessibility.AccessibleState;
 import javax.accessibility.AccessibleStateSet;
 
-import sun.awt.AWTPermissions;
 import sun.awt.AppContext;
 import sun.awt.SunToolkit;
 import sun.awt.util.IdentityArrayList;
@@ -844,8 +842,6 @@ public class Dialog extends Window {
             return;
         }
 
-        checkModalityPermission(type);
-
         modalityType = type;
         modal = (modalityType != ModalityType.MODELESS);
     }
@@ -1561,16 +1557,6 @@ public class Dialog extends Window {
         }
     }
 
-    private void checkModalityPermission(ModalityType mt) {
-        if (mt == ModalityType.TOOLKIT_MODAL) {
-            @SuppressWarnings("removal")
-            SecurityManager sm = System.getSecurityManager();
-            if (sm != null) {
-                sm.checkPermission(AWTPermissions.TOOLKIT_MODALITY_PERMISSION);
-            }
-        }
-    }
-
     /**
      * Reads serializable fields from stream.
      *
@@ -1592,12 +1578,6 @@ public class Dialog extends Window {
 
         ModalityType localModalityType = (ModalityType)fields.get("modalityType", null);
 
-        try {
-            checkModalityPermission(localModalityType);
-        } catch (@SuppressWarnings("removal") AccessControlException ace) {
-            localModalityType = DEFAULT_MODALITY_TYPE;
-        }
-
         // in 1.5 or earlier modalityType was absent, so use "modal" instead
         if (localModalityType == null) {
             this.modal = fields.get("modal", false);

src/java.desktop/share/classes/java/awt/KeyboardFocusManager.java

@@ -226,7 +226,6 @@ public abstract class KeyboardFocusManager
      * @see DefaultKeyboardFocusManager
      */
     public static void setCurrentKeyboardFocusManager(KeyboardFocusManager newManager) {
-        checkReplaceKFMPermission();
 
         KeyboardFocusManager oldManager = null;
 
@@ -354,12 +353,6 @@ public abstract class KeyboardFocusManager
      */
     private static java.util.Map<Window, WeakReference<Component>> mostRecentFocusOwners = new WeakHashMap<>();
 
-    /**
-     * We cache the permission used to verify that the calling thread is
-     * permitted to access the global focus state.
-     */
-    private static AWTPermission replaceKeyboardFocusManagerPermission;
-
     /*
      * SequencedEvent which is currently dispatched in AppContext.
      */
@@ -473,7 +466,6 @@ public abstract class KeyboardFocusManager
      */
     protected Component getGlobalFocusOwner() {
         synchronized (KeyboardFocusManager.class) {
-            checkKFMSecurity();
             return focusOwner;
         }
     }
@@ -506,7 +498,6 @@ public abstract class KeyboardFocusManager
 
         if (focusOwner == null || focusOwner.isFocusable()) {
             synchronized (KeyboardFocusManager.class) {
-                checkKFMSecurity();
 
                 oldFocusOwner = getFocusOwner();
 
@@ -584,7 +575,6 @@ public abstract class KeyboardFocusManager
      * @see java.awt.event.FocusEvent#FOCUS_LOST
      */
     public void clearGlobalFocusOwner() {
-        checkReplaceKFMPermission();
         if (!GraphicsEnvironment.isHeadless()) {
             // Toolkit must be fully initialized, otherwise
             // _clearGlobalFocusOwner will crash or throw an exception
@@ -660,7 +650,6 @@ public abstract class KeyboardFocusManager
      */
     protected Component getGlobalPermanentFocusOwner() {
         synchronized (KeyboardFocusManager.class) {
-            checkKFMSecurity();
             return permanentFocusOwner;
         }
     }
@@ -694,7 +683,6 @@ public abstract class KeyboardFocusManager
 
         if (permanentFocusOwner == null || permanentFocusOwner.isFocusable()) {
             synchronized (KeyboardFocusManager.class) {
-                checkKFMSecurity();
 
                 oldPermanentFocusOwner = getPermanentFocusOwner();
 
@@ -755,7 +743,6 @@ public abstract class KeyboardFocusManager
      */
     protected Window getGlobalFocusedWindow() {
         synchronized (KeyboardFocusManager.class) {
-            checkKFMSecurity();
             return focusedWindow;
         }
     }
@@ -785,7 +772,6 @@ public abstract class KeyboardFocusManager
 
         if (focusedWindow == null || focusedWindow.isFocusableWindow()) {
             synchronized (KeyboardFocusManager.class) {
-                checkKFMSecurity();
 
                 oldFocusedWindow = getFocusedWindow();
 
@@ -847,7 +833,6 @@ public abstract class KeyboardFocusManager
      */
     protected Window getGlobalActiveWindow() {
         synchronized (KeyboardFocusManager.class) {
-            checkKFMSecurity();
             return activeWindow;
         }
     }
@@ -875,7 +860,6 @@ public abstract class KeyboardFocusManager
     protected void setGlobalActiveWindow(Window activeWindow) {
         Window oldActiveWindow;
         synchronized (KeyboardFocusManager.class) {
-            checkKFMSecurity();
 
             oldActiveWindow = getActiveWindow();
             if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
@@ -1152,7 +1136,6 @@ public abstract class KeyboardFocusManager
      */
     protected Container getGlobalCurrentFocusCycleRoot() {
         synchronized (KeyboardFocusManager.class) {
-            checkKFMSecurity();
             return currentFocusCycleRoot;
         }
     }
@@ -1172,7 +1155,6 @@ public abstract class KeyboardFocusManager
      * @see #getGlobalCurrentFocusCycleRoot
      */
     public void setGlobalCurrentFocusCycleRoot(Container newFocusCycleRoot) {
-        checkReplaceKFMPermission();
 
         Container oldFocusCycleRoot;
 
@@ -2976,40 +2958,4 @@ public abstract class KeyboardFocusManager
                 : null;
         }
     }
-
-    private static void checkReplaceKFMPermission()
-        throws SecurityException
-    {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            if (replaceKeyboardFocusManagerPermission == null) {
-                replaceKeyboardFocusManagerPermission =
-                    new AWTPermission("replaceKeyboardFocusManager");
-            }
-            security.
-                checkPermission(replaceKeyboardFocusManagerPermission);
-        }
-    }
-
-    // Checks if this KeyboardFocusManager instance is the current KFM,
-    // or otherwise checks if the calling thread has "replaceKeyboardFocusManager"
-    // permission. Here's the reasoning to do so:
-    //
-    // A system KFM instance (which is the current KFM by default) may have no
-    // "replaceKFM" permission when a client code is on the call stack beneath,
-    // but still it should be able to execute the methods protected by this check
-    // due to the system KFM is trusted (and so it does like "privileged").
-    //
-    // If this KFM instance is not the current KFM but the client code has all
-    // permissions we can't throw SecurityException because it would contradict
-    // the security concepts. In this case the trusted client code is responsible
-    // for calling the secured methods from KFM instance which is not current.
-    private void checkKFMSecurity()
-        throws SecurityException
-    {
-        if (this != getCurrentKeyboardFocusManager()) {
-            checkReplaceKFMPermission();
-        }
-    }
 }

src/java.desktop/share/classes/java/awt/MouseInfo.java

@@ -25,7 +25,6 @@
 
 package java.awt;
 
-import sun.awt.AWTPermissions;
 import sun.awt.ComponentFactory;
 
 /**
@@ -66,12 +65,6 @@ public class MouseInfo {
             throw new HeadlessException();
         }
 
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.WATCH_MOUSE_PERMISSION);
-        }
-
         Toolkit toolkit = Toolkit.getDefaultToolkit();
         Point point = new Point(0, 0);
         int deviceNum = 0;

src/java.desktop/share/classes/java/awt/Robot.java

@@ -37,7 +37,6 @@ import java.awt.image.Raster;
 import java.awt.image.WritableRaster;
 import java.awt.peer.RobotPeer;
 
-import sun.awt.AWTPermissions;
 import sun.awt.ComponentFactory;
 import sun.awt.SunToolkit;
 import sun.awt.image.SunWritableRaster;
@@ -163,7 +162,6 @@ public class Robot {
     }
 
     private void init(GraphicsDevice screen) throws AWTException {
-        checkRobotAllowed();
         Toolkit toolkit = Toolkit.getDefaultToolkit();
         if (toolkit instanceof ComponentFactory) {
             peer = ((ComponentFactory)toolkit).createRobot(screen);
@@ -193,15 +191,6 @@ public class Robot {
         LEGAL_BUTTON_MASK = tmpMask;
     }
 
-    /* determine if the security policy allows Robot's to be created */
-    private static void checkRobotAllowed() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.CREATE_ROBOT_PERMISSION);
-        }
-    }
-
     /**
      * Check for headless state and throw {@code AWTException} if headless.
      */
@@ -437,7 +426,6 @@ public class Robot {
      * @return  Color of the pixel
      */
     public synchronized Color getPixelColor(int x, int y) {
-        checkScreenCaptureAllowed();
         Point point = peer.useAbsoluteCoordinates() ? toDeviceSpaceAbs(x, y)
                                                     : toDeviceSpace(x, y);
         return new Color(peer.getRGBPixel(point.x, point.y));
@@ -518,8 +506,6 @@ public class Robot {
     private synchronized BufferedImage[]
             createCompatibleImage(Rectangle screenRect, boolean isHiDPI) {
 
-        checkScreenCaptureAllowed();
-
         checkValidRect(screenRect);
 
         BufferedImage lowResolutionImage;
@@ -635,14 +621,6 @@ public class Robot {
         }
     }
 
-    private static void checkScreenCaptureAllowed() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.READ_DISPLAY_PIXELS_PERMISSION);
-        }
-    }
-
     /*
      * Called after an event is generated
      */

src/java.desktop/share/classes/java/awt/SystemTray.java

@@ -32,7 +32,6 @@ import java.beans.PropertyChangeSupport;
 import java.util.Vector;
 
 import sun.awt.AWTAccessor;
-import sun.awt.AWTPermissions;
 import sun.awt.AppContext;
 import sun.awt.HeadlessToolkit;
 import sun.awt.SunToolkit;
@@ -160,7 +159,6 @@ public class SystemTray {
      * @see #isSupported
      */
     public static SystemTray getSystemTray() {
-        checkSystemTrayAllowed();
         if (GraphicsEnvironment.isHeadless()) {
             throw new HeadlessException();
         }
@@ -494,14 +492,6 @@ public class SystemTray {
         }
     }
 
-    static void checkSystemTrayAllowed() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.ACCESS_SYSTEM_TRAY_PERMISSION);
-        }
-    }
-
     private static void initializeSystemTrayIfNeeded() {
         synchronized (SystemTray.class) {
             if (systemTray == null) {

src/java.desktop/share/classes/java/awt/Toolkit.java

@@ -72,7 +72,6 @@ import java.util.stream.Collectors;
 import javax.accessibility.AccessibilityProvider;
 
 import sun.awt.AWTAccessor;
-import sun.awt.AWTPermissions;
 import sun.awt.AppContext;
 import sun.awt.HeadlessToolkit;
 import sun.awt.PeerEvent;
@@ -1360,11 +1359,6 @@ public abstract class Toolkit {
      * @return    the {@code EventQueue} object
     */
     public final EventQueue getSystemEventQueue() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.CHECK_AWT_EVENTQUEUE_PERMISSION);
-        }
         return getSystemEventQueueImpl();
     }
 
@@ -1690,11 +1684,6 @@ public abstract class Toolkit {
         if (localL == null) {
             return;
         }
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-          security.checkPermission(AWTPermissions.ALL_AWT_EVENTS_PERMISSION);
-        }
         synchronized (this) {
             SelectiveAWTEventListener selectiveListener =
                 listener2SelectiveListener.get(localL);
@@ -1750,11 +1739,6 @@ public abstract class Toolkit {
         if (listener == null) {
             return;
         }
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.ALL_AWT_EVENTS_PERMISSION);
-        }
 
         synchronized (this) {
             SelectiveAWTEventListener selectiveListener =
@@ -1807,11 +1791,6 @@ public abstract class Toolkit {
      * @since 1.4
      */
     public AWTEventListener[] getAWTEventListeners() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.ALL_AWT_EVENTS_PERMISSION);
-        }
         synchronized (this) {
             EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
 
@@ -1851,11 +1830,6 @@ public abstract class Toolkit {
      * @since 1.4
      */
     public AWTEventListener[] getAWTEventListeners(long eventMask) {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.ALL_AWT_EVENTS_PERMISSION);
-        }
         synchronized (this) {
             EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
 

src/java.desktop/share/classes/java/awt/TrayIcon.java

@@ -118,9 +118,8 @@ public class TrayIcon {
     }
 
     private TrayIcon()
-      throws UnsupportedOperationException, HeadlessException, SecurityException
+      throws UnsupportedOperationException, HeadlessException
     {
-        SystemTray.checkSystemTrayAllowed();
         if (GraphicsEnvironment.isHeadless()) {
             throw new HeadlessException();
         }

src/java.desktop/share/classes/java/awt/Window.java

@@ -64,7 +64,6 @@ import javax.accessibility.AccessibleState;
 import javax.accessibility.AccessibleStateSet;
 
 import sun.awt.AWTAccessor;
-import sun.awt.AWTPermissions;
 import sun.awt.AppContext;
 import sun.awt.DebugSettings;
 import sun.awt.SunToolkit;
@@ -1627,13 +1626,6 @@ public class Window extends Container implements Accessible {
         if (modalExclusionType == exclusionType) {
             return;
         }
-        if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) {
-            @SuppressWarnings("removal")
-            SecurityManager sm = System.getSecurityManager();
-            if (sm != null) {
-                sm.checkPermission(AWTPermissions.TOOLKIT_MODALITY_PERMISSION);
-            }
-        }
         modalExclusionType = exclusionType;
 
         // if we want on-fly changes, we need to uncomment the lines below
@@ -2169,12 +2161,6 @@ public class Window extends Container implements Accessible {
      * @since 1.5
      */
     public final void setAlwaysOnTop(boolean alwaysOnTop) {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
-        }
-
         boolean oldAlwaysOnTop;
         synchronized(this) {
             oldAlwaysOnTop = this.alwaysOnTop;

src/java.desktop/share/classes/javax/swing/JInternalFrame.java

@@ -1096,12 +1096,8 @@ public class JInternalFrame extends JComponent implements
           fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_ACTIVATED);
         else {
           fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_DEACTIVATED);
-          try {
+          java.awt.Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(
-              java.awt.Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(
                                                new sun.awt.UngrabEvent(this));
-          } catch (SecurityException e) {
-              this.dispatchEvent(new sun.awt.UngrabEvent(this));
-          }
         }
         repaint();
     }

src/java.desktop/share/classes/javax/swing/SwingUtilities.java

@@ -1970,14 +1970,6 @@ public class SwingUtilities implements SwingConstants
         public void show() {
             // This frame can never be shown
         }
-        public void dispose() {
-            try {
-                getToolkit().getSystemEventQueue();
-                super.dispose();
-            } catch (Exception e) {
-                // untrusted code not allowed to dispose
-            }
-        }
     }
 
     /**

src/java.desktop/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java

@@ -528,12 +528,7 @@ public class BasicInternalFrameTitlePane extends JComponent
     protected void postClosingEvent(JInternalFrame frame) {
         InternalFrameEvent e = new InternalFrameEvent(
             frame, InternalFrameEvent.INTERNAL_FRAME_CLOSING);
-        // Try posting event, unless there's a SecurityManager.
+        Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(e);
-        try {
-            Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(e);
-        } catch (SecurityException se) {
-            frame.dispatchEvent(e);
-        }
     }
 
     /**

src/java.desktop/share/classes/sun/awt/AWTPermissions.java

@@ -35,28 +35,4 @@ public final class AWTPermissions {
 
     public static final AWTPermission ACCESS_CLIPBOARD_PERMISSION =
         new AWTPermission("accessClipboard");
-
-    public static final AWTPermission CHECK_AWT_EVENTQUEUE_PERMISSION =
-        new AWTPermission("accessEventQueue");
-
-    public static final AWTPermission TOOLKIT_MODALITY_PERMISSION =
-        new AWTPermission("toolkitModality");
-
-    public static final AWTPermission READ_DISPLAY_PIXELS_PERMISSION =
-        new AWTPermission("readDisplayPixels");
-
-    public static final AWTPermission CREATE_ROBOT_PERMISSION =
-        new AWTPermission("createRobot");
-
-    public static final AWTPermission WATCH_MOUSE_PERMISSION =
-        new AWTPermission("watchMousePointer");
-
-    public static final AWTPermission SET_WINDOW_ALWAYS_ON_TOP_PERMISSION =
-        new AWTPermission("setWindowAlwaysOnTop");
-
-    public static final AWTPermission ALL_AWT_EVENTS_PERMISSION =
-        new AWTPermission("listenToAllAWTEvents");
-
-    public static final AWTPermission ACCESS_SYSTEM_TRAY_PERMISSION =
-        new AWTPermission("accessSystemTray");
 }

src/java.desktop/share/classes/sun/awt/SunToolkit.java

@@ -1082,22 +1082,9 @@ public abstract class SunToolkit extends Toolkit
 
     /**
      * Returns whether popup is allowed to be shown above the task bar.
-     * This is a default implementation of this method, which checks
-     * corresponding security permission.
      */
     public boolean canPopupOverlapTaskBar() {
-        boolean result = true;
+        return true;
-        try {
-            @SuppressWarnings("removal")
-            SecurityManager sm = System.getSecurityManager();
-            if (sm != null) {
-                sm.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
-            }
-        } catch (SecurityException se) {
-            // There is no permission to show popups over the task bar
-            result = false;
-        }
-        return result;
     }
 
     /**

src/java.desktop/share/classes/sun/awt/image/BufImgSurfaceData.java

@@ -437,11 +437,6 @@ public class BufImgSurfaceData extends SurfaceData {
         return new Rectangle(bufImg.getWidth(), bufImg.getHeight());
     }
 
-    protected void checkCustomComposite() {
-        // BufferedImages always allow Custom Composite objects since
-        // their pixels are immediately retrievable anyway.
-    }
-
     /**
      * Returns destination Image associated with this SurfaceData.
      */

src/java.desktop/share/classes/sun/java2d/NullSurfaceData.java

@@ -130,15 +130,6 @@ public class NullSurfaceData extends SurfaceData {
         return new Rectangle();
     }
 
-    /**
-     * Performs Security Permissions checks to see if a Custom
-     * Composite object should be allowed access to the pixels
-     * of this surface.
-     */
-    protected void checkCustomComposite() {
-        return;
-    }
-
     /**
      * Performs a copyarea within this surface.  Returns
      * false if there is no algorithm to perform the copyarea

src/java.desktop/share/classes/sun/java2d/SunGraphics2D.java

@@ -974,7 +974,6 @@ public final class SunGraphics2D
         } else if (comp == null) {
             throw new IllegalArgumentException("null Composite");
         } else {
-            surfaceData.checkCustomComposite();
             newCompState = COMP_CUSTOM;
             newCompType = CompositeType.General;
         }

src/java.desktop/share/classes/sun/java2d/SurfaceData.java

@@ -1002,25 +1002,6 @@ public abstract class SurfaceData
      */
     public abstract Rectangle getBounds();
 
-    static java.security.Permission compPermission;
-
-    /**
-     * Performs Security Permissions checks to see if a Custom
-     * Composite object should be allowed access to the pixels
-     * of this surface.
-     */
-    protected void checkCustomComposite() {
-        @SuppressWarnings("removal")
-        SecurityManager sm = System.getSecurityManager();
-        if (sm != null) {
-            if (compPermission == null) {
-                compPermission =
-                    new java.awt.AWTPermission("readDisplayPixels");
-            }
-            sm.checkPermission(compPermission);
-        }
-    }
-
     /**
      * Fetches private field IndexColorModel.allgrayopaque
      * which is true when all palette entries in the color

src/java.desktop/unix/classes/sun/awt/X11GraphicsDevice.java

@@ -25,7 +25,6 @@
 
 package sun.awt;
 
-import java.awt.AWTPermission;
 import java.awt.DisplayMode;
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsDevice;
@@ -65,7 +64,6 @@ public final class X11GraphicsDevice extends GraphicsDevice
     private volatile int screen;
     Map<SurfaceType, SurfaceManager.ProxyCache> x11ProxyCacheMap = Collections.synchronizedMap(new HashMap<>());
 
-    private static AWTPermission fullScreenExclusivePermission;
     private static Boolean xrandrExtSupported;
     private SunDisplayChanger topLevels = new SunDisplayChanger();
     private DisplayMode origDisplayMode;
@@ -335,23 +333,7 @@ public final class X11GraphicsDevice extends GraphicsDevice
 
     @Override
     public boolean isFullScreenSupported() {
-        boolean fsAvailable = isXrandrExtensionSupported();
+        return isXrandrExtensionSupported();
-        if (fsAvailable) {
-            @SuppressWarnings("removal")
-            SecurityManager security = System.getSecurityManager();
-            if (security != null) {
-                if (fullScreenExclusivePermission == null) {
-                    fullScreenExclusivePermission =
-                        new AWTPermission("fullScreenExclusive");
-                }
-                try {
-                    security.checkPermission(fullScreenExclusivePermission);
-                } catch (SecurityException e) {
-                    return false;
-                }
-            }
-        }
-        return fsAvailable;
     }
 
     @Override

src/java.desktop/windows/classes/sun/awt/Win32GraphicsDevice.java

@@ -25,7 +25,6 @@
 
 package sun.awt;
 
-import java.awt.AWTPermission;
 import java.awt.DisplayMode;
 import java.awt.EventQueue;
 import java.awt.Frame;
@@ -81,7 +80,6 @@ public class Win32GraphicsDevice extends GraphicsDevice implements
     // pipelines which are mutually exclusive with opengl, for which
     // pixel formats were added in the first place
     protected static boolean pfDisabled;
-    private static AWTPermission fullScreenExclusivePermission;
     // the original display mode we had before entering the fullscreen
     // mode
     private DisplayMode defaultDisplayMode;
@@ -349,29 +347,12 @@ public class Win32GraphicsDevice extends GraphicsDevice implements
                     getLocalGraphicsEnvironment().getDefaultScreenDevice());
     }
 
-    private static boolean isFSExclusiveModeAllowed() {
-        @SuppressWarnings("removal")
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            if (fullScreenExclusivePermission == null) {
-                fullScreenExclusivePermission =
-                    new AWTPermission("fullScreenExclusive");
-            }
-            try {
-                security.checkPermission(fullScreenExclusivePermission);
-            } catch (SecurityException e) {
-                return false;
-            }
-        }
-        return true;
-    }
-
     /**
      * returns true unless we're not allowed to use fullscreen mode.
      */
     @Override
     public boolean isFullScreenSupported() {
-        return isFSExclusiveModeAllowed();
+        return true;
     }
 
     @Override

test/jdk/lib/client/ExtendedRobot.java

@@ -68,11 +68,8 @@ public class ExtendedRobot extends Robot {
      * @throws  AWTException if the platform configuration does not allow low-level input
      *          control. This exception is always thrown when
      *          GraphicsEnvironment.isHeadless() returns true
-     * @throws  SecurityException if {@code createRobot} permission is not granted
      *
      * @see     java.awt.GraphicsEnvironment#isHeadless
-     * @see     SecurityManager#checkPermission
-     * @see     java.awt.AWTPermission
      */
     public ExtendedRobot() throws AWTException {
         super();
@@ -99,12 +96,9 @@ public class ExtendedRobot extends Robot {
      *          GraphicsEnvironment.isHeadless() returns true.
      * @throws  IllegalArgumentException if {@code screen} is not a screen
      *          GraphicsDevice.
-     * @throws  SecurityException if {@code createRobot} permission is not granted
      *
      * @see     java.awt.GraphicsEnvironment#isHeadless
      * @see     GraphicsDevice
-     * @see     SecurityManager#checkPermission
-     * @see     java.awt.AWTPermission
      */
     public ExtendedRobot(GraphicsDevice screen) throws AWTException {
         super(screen);