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

*** 1,7 ****
  /*
!  * Copyright (c) 2000, 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.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2000, 2020, 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.  Oracle designates this
*** 85,94 ****
--- 85,99 ----
       * list should be reused if possible.
       */
      private transient Container cachedRoot;
      private transient List<Component> cachedCycle;
  
+     /**
+      * Constructs a {@code ContainerOrderFocusTraversalPolicy}.
+      */
+     public ContainerOrderFocusTraversalPolicy() {}
+ 
      /*
       * We suppose to use getFocusTraversalCycle & getComponentIndex methods in order
       * to divide the policy into two parts:
       * 1) Making the focus traversal cycle.
       * 2) Traversing the cycle.