modules/javafx.controls/src/main/java/javafx/scene/control/ComboBox.java

*** 181,190 ****
--- 181,192 ----
   *});</code></pre>
   *
   * <p>Admittedly the above approach is far more verbose, but it offers the
   * required functionality without encountering the scenegraph constraints.
   *
+  * @param <T> The type of the value that has been selected or otherwise entered
+  * in to this ComboBox
   * @see ComboBoxBase
   * @see Cell
   * @see ListCell
   * @see StringConverter
   * @since JavaFX 2.1
*** 227,236 ****
--- 229,239 ----
      }
  
      /**
       * Creates a default ComboBox instance with the provided items list and
       * a default {@link #selectionModelProperty() selection model}.
+      * @param items the list of items
       */
      public ComboBox(ObservableList<T> items) {
          getStyleClass().add(DEFAULT_STYLE_CLASS);
          setAccessibleRole(AccessibleRole.COMBO_BOX);
          setItems(items);
*** 312,321 ****
--- 315,325 ----
      // --- string converter
      /**
       * Converts the user-typed input (when the ComboBox is
       * {@link #editableProperty() editable}) to an object of type T, such that
       * the input may be retrieved via the  {@link #valueProperty() value} property.
+      * @return the converter property
       */
      public ObjectProperty<StringConverter<T>> converterProperty() { return converter; }
      private ObjectProperty<StringConverter<T>> converter =
              new SimpleObjectProperty<StringConverter<T>>(this, "converter", ComboBox.<T>defaultStringConverter());
      public final void setConverter(StringConverter<T> value) { converterProperty().set(value); }
*** 339,348 ****
--- 343,353 ----
      /**
       * The button cell is used to render what is shown in the ComboBox 'button'
       * area. If a cell is set here, it does not change the rendering of the
       * ComboBox popup list - that rendering is controlled via the
       * {@link #cellFactoryProperty() cell factory} API.
+      * @return the button cell property
       * @since JavaFX 2.2
       */
      public ObjectProperty<ListCell<T>> buttonCellProperty() { return buttonCell; }
      private ObjectProperty<ListCell<T>> buttonCell =
              new SimpleObjectProperty<ListCell<T>>(this, "buttonCell");
*** 411,420 ****
--- 416,426 ----
      private ObjectProperty<Node> placeholder;
      /**
       * This Node is shown to the user when the ComboBox has no content to show.
       * The placeholder node is shown in the ComboBox popup area
       * when the items list is null or empty.
+      * @return the placeholder property
       * @since JavaFX 8.0
       */
      public final ObjectProperty<Node> placeholderProperty() {
          if (placeholder == null) {
              placeholder = new SimpleObjectProperty<Node>(this, "placeholder");