src/jdk.compiler/share/classes/com/sun/source/util/TreePathScanner.java

@@ -41,10 +41,14 @@
  *
  * @author Jonathan Gibbons
  * @since 1.6
  */
 public class TreePathScanner<R, P> extends TreeScanner<R, P> {
+    /**
+     * Constructs a {@code TreePathScanner}.
+     */
+    public TreePathScanner() {}
 
     /**
      * Scans a tree from a position identified by a TreePath.
      * @param path the path identifying the node to be scanned
      * @param p a parameter value passed to visit methods