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

@@ -66,10 +66,14 @@
  * </pre>
  *
  * @since 1.8
  */
 public class DocTreeScanner<R,P> implements DocTreeVisitor<R,P> {
+    /**
+     * Constructs a {@code DocTreeScanner}.
+     */
+    public DocTreeScanner() {}
 
     /**
      * Scans a single node.
      * @param node the node to be scanned
      * @param p a parameter value passed to the visit method