Eclipseを使ってJavaを勉強しています。プログラムが動かない

Eclipseを使ってJavaを勉強しています。
「FxmlBMI.java」を実行するとうまく動作しません。
【fxmlsmpl.fxml:6」の6行目と「FxmlBMI.java:21」の21行目でエラーが出ているみたいです。
どうすればいいか教えてください。お願いいたします。

Java
1//FxmlBMI.java
2
3package application;
4
5import javafx.application.Application;
6import javafx.event.ActionEvent;
7import javafx.fxml.FXML;
8import javafx.fxml.FXMLLoader;
9import javafx.scene.Scene;
10import javafx.scene.control.Label;
11import javafx.scene.control.TextField;
12import javafx.scene.layout.AnchorPane;
13import javafx.stage.Stage;
14
15public class FxmlBMI extends Application {
16
17  @Override
18    public void start(Stage stage) throws Exception {
19    stage.setTitle("FxmlBMI");
20    FXMLLoader fxml = new FXMLLoader(getClass().getResource("fxmlsmpl.fxml"));
21    AnchorPane root = fxml.load();
22    Scene scene = new Scene(root);
23    stage.setScene(scene);
24    stage.show();
25  }
26
27  @FXML
28  private TextField txtHeight;
29  @FXML
30  private TextField txtWeight;
31  @FXML
32  private Label txtBMI;
33  @FXML  // OKボタンがクリックされた
34  public void onCalcClicked(ActionEvent event) {
35    double h = Double.parseDouble(txtHeight.getText()) * 0.01;
36    double w = Double.parseDouble(txtWeight.getText());
37    String result =  String.format("BMI=%5.2f", (w / ( h * h )));
38    txtBMI.setText(result);
39  }
40}
41

FXML
1<?xml version="1.0" encoding="UTF-8"?>
2<?import javafx.scene.control.*?>
3<?import javafx.scene.layout.*?>
4
5
6<AnchorPane xmlns:fx="http://javafx.com/fxml" fx:controller="FxmlBMI" prefWidth="220.0" prefHeight="80.0">
7  <children>
8    <VBox spacing="5">
9      <children>
10        <HBox>
11         <children>
12           <Label text="身長(cm):" prefWidth="80.0"  />
13           <TextField fx:id="txtHeight" prefWidth="100.0" />
14          </children>
15        </HBox>
16        <HBox>
17         <children>
18           <Label text="体重(kg):" prefWidth="80.0" />
19           <TextField fx:id="txtWeight" prefWidth="100.0" />
20          </children>
21        </HBox>
22        <HBox>
23         <children>
24           <Label text="BMI" fx:id="txtBMI" prefWidth="100.0" />
25           <Button onAction="#onCalcClicked" text="BMI計算" prefWidth="80.0" />
26          </children>
27        </HBox>
28      </children>
29    </VBox>
30  </children>
31</AnchorPane>
32
33

error
1Exception in Application start method
2Exception in thread "main" java.lang.reflect.InvocationTargetException
3	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
4	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
5	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
6	at java.lang.reflect.Method.invoke(Method.java:498)
7	at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
8Caused by: java.lang.RuntimeException: Exception in Application start method
9	at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
10	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$159(LauncherImpl.java:182)
11	at java.lang.Thread.run(Thread.java:748)
12Caused by: javafx.fxml.LoadException: 
13/C:/pleiades/eclipse/JavaFX_topic16/bin/application/fxmlsmpl.fxml:6
14
15	at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
16	at javafx.fxml.FXMLLoader.access$700(FXMLLoader.java:103)
17	at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:922)
18	at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:971)
19	at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:220)
20	at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:744)
21	at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
22	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
23	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
24	at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
25	at application.FxmlBMI.start(FxmlBMI.java:21)
26	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$166(LauncherImpl.java:863)
27	at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$179(PlatformImpl.java:326)
28	at com.sun.javafx.application.PlatformImpl.lambda$null$177(PlatformImpl.java:295)
29	at java.security.AccessController.doPrivileged(Native Method)
30	at com.sun.javafx.application.PlatformImpl.lambda$runLater$178(PlatformImpl.java:294)
31	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
32	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
33	at com.sun.glass.ui.win.WinApplication.lambda$null$152(WinApplication.java:177)
34	... 1 more
35Caused by: java.lang.ClassNotFoundException: FxmlBMI
36	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
37	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
38	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
39	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
40	at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:920)
41	... 17 more
42