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

*** 55,68 ****
--- 55,77 ----
      private final FocusTraversalPolicy layoutPolicy =
          new LegacyLayoutFocusTraversalPolicy(this);
      private final LayoutComparator comparator =
          new LayoutComparator();
  
+     /**
+      * Constructs a {@code DefaultFocusManager}.
+      */
      public DefaultFocusManager() {
          setDefaultFocusTraversalPolicy(gluePolicy);
      }
  
+     /**
+      * Returns the component after.
+      * @return the component after
+      * @param aContainer a container
+      * @param aComponent a component
+      */
      public Component getComponentAfter(Container aContainer,
                                         Component aComponent)
      {
          Container root = (aContainer.isFocusCycleRoot())
              ? aContainer
*** 81,90 ****
--- 90,105 ----
          }
  
          return null;
      }
  
+     /**
+      * Returns the component before.
+      * @return the component before
+      * @param aContainer a container
+      * @param aComponent a component
+      */
      public Component getComponentBefore(Container aContainer,
                                          Component aComponent)
      {
          Container root = (aContainer.isFocusCycleRoot())
              ? aContainer
*** 103,112 ****
--- 118,132 ----
          }
  
          return null;
      }
  
+     /**
+      * Returns the first component.
+      * @return the first component
+      * @param aContainer a container
+      */
      public Component getFirstComponent(Container aContainer) {
          Container root = (aContainer.isFocusCycleRoot())
              ? aContainer
              : aContainer.getFocusCycleRootAncestor();
  
*** 123,132 ****
--- 143,157 ----
          }
  
          return null;
      }
  
+     /**
+      * Returns the last component.
+      * @return the last component
+      * @param aContainer a container
+      */
      public Component getLastComponent(Container aContainer) {
          Container root = (aContainer.isFocusCycleRoot())
              ? aContainer
              : aContainer.getFocusCycleRootAncestor();
  
*** 143,152 ****
--- 168,183 ----
          }
  
          return null;
      }
  
+     /**
+      * Compare the components.
+      * @param a the first component
+      * @param b the second component
+      * @return the result of comparing the components
+      */
      public boolean compareTabOrder(Component a, Component b) {
          return (comparator.compare(a, b) < 0);
      }
  }