update comments, remove stop exception

Author: tschie

src/main/java/com/esri/samples/featurelayers/feature_layer_shapefile/FeatureLayerShapefileSample.java

@@ -65,7 +65,7 @@ public void start(Stage stage) throws Exception {
       FeatureLayer featureLayer = new FeatureLayer(shapefileFeatureTable);
       featureLayer.addDoneLoadingListener(() -> {
         if (featureLayer.getLoadStatus() == LoadStatus.LOADED) {
-          // zoom to the feature layer's extent
+          // zoom to the area containing the layer's features
           mapView.setViewpointGeometryAsync(featureLayer.getFullExtent());
         } else {
           Alert alert = new Alert(Alert.AlertType.ERROR, featureLayer.getLoadError().getMessage());
@@ -88,7 +88,7 @@ public void start(Stage stage) throws Exception {
    * Stops and releases all resources used in application.
    */
   @Override
-  public void stop() throws Exception {
+  public void stop() {
 
     if (mapView != null) {
       mapView.dispose();

src/main/java/com/esri/samples/featurelayers/feature_layer_shapefile/README.md

@@ -9,7 +9,7 @@
 <p>To show a shapefile as a feature layer:</p>
 
 <ol>
-  <li>Create a <code>ShapefileFeatureTable</code> passing in the URL of a shapefile.</li>
+  <li>Create a <code>ShapefileFeatureTable</code> passing in the URI of a shapefile.</li>
   <li>Create a <code>FeatureLayer</code> using the <code>ShapefileFeatureTable</code>.</li>
   <li>Add the layer to the map with <code>map.getOperationalLayers().add(featureLayer)</code>.</li>
 </ol>