src/java.desktop/share/classes/javax/swing/tree/VariableHeightLayoutCache.java

*** 86,95 ****
--- 86,98 ----
       * A stack of stacks.
       */
      private Stack<Stack<TreePath>> tempStacks;
  
  
+     /**
+      * Constructs a {@code VariableHeightLayoutCache}.
+      */
      public VariableHeightLayoutCache() {
          super();
          tempStacks = new Stack<Stack<TreePath>>();
          visibleNodes = new Vector<Object>();
          boundsBuffer = new Rectangle();