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

@@ -86,10 +86,13 @@
      * 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();