8252195: AWT Accessibility API nested classes rely on default constructors

Reviewed-by: serb

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

@@ -578,6 +578,11 @@ public class Applet extends Panel {
          */
         private static final long serialVersionUID = 8127374778187708896L;
 
+        /**
+         * Constructs an {@code AccessibleApplet}
+         */
+        protected AccessibleApplet() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -537,6 +537,11 @@ public class Button extends Component implements Accessible {
          */
         private static final long serialVersionUID = -5932203980244017102L;
 
+        /**
+         * Constructs an {@code AccessibleAWTButton}
+         */
+        protected AccessibleAWTButton() {}
+
         /**
          * Get the accessible name of this object.
          *

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

@@ -240,6 +240,11 @@ public class Canvas extends Component implements Accessible {
     {
         private static final long serialVersionUID = -6325592262103146699L;
 
+        /**
+         * Constructs an {@code AccessibleAWTCanvas}
+         */
+        protected AccessibleAWTCanvas() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -536,6 +536,11 @@ public class CheckboxMenuItem extends MenuItem implements ItemSelectable, Access
          */
         private static final long serialVersionUID = -1122642964303476L;
 
+        /**
+         * Constructs an {@code AccessibleAWTCheckboxMenuItem}
+         */
+        protected AccessibleAWTCheckboxMenuItem() {}
+
         /**
          * Get the AccessibleAction associated with this object.  In the
          * implementation of the Java Accessibility API for this class,

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

@@ -9341,6 +9341,11 @@ public abstract class Component implements ImageObserver, MenuContainer,
         protected class AccessibleAWTComponentHandler implements ComponentListener, Serializable {
             private static final long serialVersionUID = -1009684107426231869L;
 
+            /**
+             * Constructs an {@code AccessibleAWTComponentHandler}
+             */
+            protected AccessibleAWTComponentHandler() {}
+
             public void componentHidden(ComponentEvent e)  {
                 if (accessibleContext != null) {
                     accessibleContext.firePropertyChange(
@@ -9373,6 +9378,11 @@ public abstract class Component implements ImageObserver, MenuContainer,
         protected class AccessibleAWTFocusHandler implements FocusListener, Serializable {
             private static final long serialVersionUID = 3150908257351582233L;
 
+            /**
+             * Constructs an {@code AccessibleAWTFocusHandler}
+             */
+            protected AccessibleAWTFocusHandler() {}
+
             public void focusGained(FocusEvent event) {
                 if (accessibleContext != null) {
                     accessibleContext.firePropertyChange(

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

@@ -3806,6 +3806,11 @@ public class Container extends Component {
          */
         private static final long serialVersionUID = 5081320404842566097L;
 
+        /**
+         * Constructs an {@code AccessibleAWTContainer}
+         */
+        protected AccessibleAWTContainer() {}
+
         /**
          * Returns the number of accessible children in the object.  If all
          * of the children of this object implement {@code Accessible},
@@ -3863,6 +3868,11 @@ public class Container extends Component {
             implements ContainerListener, Serializable {
             private static final long serialVersionUID = -480855353991814677L;
 
+            /**
+             * Constructs an {@code AccessibleContainerHandler}
+             */
+            protected AccessibleContainerHandler() {}
+
             public void componentAdded(ContainerEvent e) {
                 Component c = e.getChild();
                 if (c != null && c instanceof Accessible) {

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

@@ -1658,6 +1658,11 @@ public class Dialog extends Window {
          */
         private static final long serialVersionUID = 4837230331833941201L;
 
+        /**
+         * Constructs an {@code AccessibleAWTDialog}
+         */
+        protected AccessibleAWTDialog() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -1297,6 +1297,11 @@ public class Frame extends Window implements MenuContainer {
          */
         private static final long serialVersionUID = -6172960752956030250L;
 
+        /**
+         * Constructs an {@code AccessibleAWTFrame}
+         */
+        protected AccessibleAWTFrame() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -624,6 +624,11 @@ public class Menu extends MenuItem implements MenuContainer, Accessible {
          */
         private static final long serialVersionUID = 5228160894980069094L;
 
+        /**
+         * Constructs an {@code AccessibleAWTMenu}
+         */
+        protected AccessibleAWTMenu() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -511,6 +511,11 @@ public class MenuBar extends MenuComponent implements MenuContainer, Accessible
          */
         private static final long serialVersionUID = -8577604491830083815L;
 
+        /**
+         * Constructs an {@code AccessibleAWTMenuBar}
+         */
+        protected AccessibleAWTMenuBar() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -823,6 +823,11 @@ public class MenuItem extends MenuComponent implements Accessible {
          */
         private static final long serialVersionUID = -217847831945965825L;
 
+        /**
+         * Constructs an {@code AccessibleAWTMenuItem}
+         */
+        protected AccessibleAWTMenuItem() {}
+
         /**
          * Get the accessible name of this object.
          *

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

@@ -119,6 +119,11 @@ public class Panel extends Container implements Accessible {
 
         private static final long serialVersionUID = -6409552226660031050L;
 
+        /**
+         * Constructs an {@code AccessibleAWTPanel}
+         */
+        protected AccessibleAWTPanel() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -228,6 +228,11 @@ public class PopupMenu extends Menu {
          */
         private static final long serialVersionUID = -4282044795947239955L;
 
+        /**
+         * Constructs an {@code AccessibleAWTPopupMenu}
+         */
+        protected AccessibleAWTPopupMenu() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -791,6 +791,11 @@ public class ScrollPane extends Container implements Accessible {
          */
         private static final long serialVersionUID = 6100703663886637L;
 
+        /**
+         * Constructs an {@code AccessibleAWTScrollPane}
+         */
+        protected AccessibleAWTScrollPane() {}
+
         /**
          * Get the role of this object.
          *

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

@@ -1262,6 +1262,11 @@ public class Scrollbar extends Component implements Adjustable, Accessible {
          */
         private static final long serialVersionUID = -344337268523697807L;
 
+        /**
+         * Constructs an {@code AccessibleAWTScrollBar}
+         */
+        protected AccessibleAWTScrollBar() {}
+
         /**
          * Get the state set of this object.
          *

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

@@ -719,6 +719,11 @@ public class TextArea extends TextComponent {
          */
         private static final long serialVersionUID = 3472827823632144419L;
 
+        /**
+         * Constructs an {@code AccessibleAWTTextArea}
+         */
+        protected AccessibleAWTTextArea() {}
+
         /**
          * Gets the state set of this object.
          *

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

@@ -788,6 +788,11 @@ public class TextField extends TextComponent {
          */
         private static final long serialVersionUID = 6219164359235943158L;
 
+        /**
+         * Constructs an {@code AccessibleAWTTextField}
+         */
+        protected AccessibleAWTTextField() {}
+
         /**
          * Gets the state set of this object.
          *

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

@@ -3163,6 +3163,11 @@ public class Window extends Container implements Accessible {
          */
         private static final long serialVersionUID = 4215068635060671780L;
 
+        /**
+         * Constructs an {@code AccessibleAWTWindow}
+         */
+        protected AccessibleAWTWindow() {}
+
         /**
          * Get the role of this object.
          *