brouillon) exercices interactifs de lecture #

Exemples de messages d’erreur #

Java01 #

java.lang.NullPointerException
        at pong.frontal.taches.AfficherFileAttente.lambda$afficherFileAttente$1(AfficherFileAttente.java:40)
        at ca.ntro.app.tasks.SimpleTaskCreatorNtro.executeTask(SimpleTaskCreatorNtro.java:81)
        at ca.ntro.app.tasks.SimpleTaskCreatorNtro.lambda$registerExecutionHandler$0(SimpleTaskCreatorNtro.java:74)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskTraceNtro.executeTask(TaskTraceNtro.java:150)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskTraceNtro.executeOneStep(TaskTraceNtro.java:128)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.lambda$executeLoop$1(TaskGraphTraceNtro.java:179)
        at ca.ntro.core.stream.StreamNtro.lambda$reduceToResult$10(StreamNtro.java:196)
        at ca.ntro.core.stream.StreamNtro.lambda$applyReducer$0(StreamNtro.java:44)
        at ca.ntro.core.stream.StreamForMapValues.forEach_(StreamForMapValues.java:36)
        at ca.ntro.core.stream.StreamNtro.applyReducer(StreamNtro.java:42)
        at ca.ntro.core.stream.StreamNtro.reduceToResult(StreamNtro.java:194)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.executeLoop(TaskGraphTraceNtro.java:175)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.executeAfterResult(TaskGraphTraceNtro.java:252)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.registerNewResult(TaskGraphTraceNtro.java:198)
        at ca.ntro.core.task_graphs.generic_task_graph.GenericTaskGraphNtro.registerNewResult(GenericTaskGraphNtro.java:254)
        at ca.ntro.core.task_graphs.generic_task_graph.GenericSimpleTaskNtro.addResult(GenericSimpleTaskNtro.java:93)
        at services.MessageServiceFx.lambda$addObservationToObservationHandlerTask$1(MessageServiceFx.java:42)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
        at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
        at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:316)
        at java.base/java.lang.Thread.run(Thread.java:829)

la variable fileAttente (ligne 40) contient la valeur null
correctif: s’assurer de donner une valeur à fileAttente avant d’appeler une méthode avec fileAttente.XXX

Java02 #

javafx.fxml.LoadException:
/home/mbergeron/__ca.ntro/4f5/tut04/build/resources/main/file_attente.xml

        at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2707)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2685)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
        at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2516)
        at ca.ntro.app.views.ViewLoaderFx.createView(ViewLoaderFx.java:145)
        at pong.frontal.taches.Initialisation.lambda$creerVueFileAttente$3(Initialisation.java:76)
        at ca.ntro.app.tasks.SimpleTaskCreatorNtro.executeTaskForValue(SimpleTaskCreatorNtro.java:118)
        at ca.ntro.app.tasks.SimpleTaskCreatorNtro.lambda$registerExecutionForValueHandler$1(SimpleTaskCreatorNtro.java:111)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskTraceNtro.executeTask(TaskTraceNtro.java:150)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskTraceNtro.executeOneStep(TaskTraceNtro.java:128)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.lambda$executeLoop$1(TaskGraphTraceNtro.java:179)
        at ca.ntro.core.stream.StreamNtro.lambda$reduceToResult$10(StreamNtro.java:196)
        at ca.ntro.core.stream.StreamNtro.lambda$applyReducer$0(StreamNtro.java:44)
        at ca.ntro.core.stream.StreamForMapValues.forEach_(StreamForMapValues.java:36)
        at ca.ntro.core.stream.StreamNtro.applyReducer(StreamNtro.java:42)
        at ca.ntro.core.stream.StreamNtro.reduceToResult(StreamNtro.java:194)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.executeLoop(TaskGraphTraceNtro.java:175)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.execute(TaskGraphTraceNtro.java:153)
        at ca.ntro.app.tasks.TaskFactoryNtro.executeTasks(TaskFactoryNtro.java:86)
        at ca.ntro.app.frontend.FrontendRegistrarNtro.executeTasks(FrontendRegistrarNtro.java:149)
        at ca.ntro.app.AppWrapperFx.start(AppWrapperFx.java:99)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
        at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
        at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
        at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:316)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NullPointerException
        at pong.frontal.vues.VueFileAttente.installerEvtAfficherPartie(VueFileAttente.java:35)
        at pong.frontal.vues.VueFileAttente.initialize(VueFileAttente.java:28)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2655)
        ... 28 more

L’attribut boutonOuvrirPartie est null
Correctif:
- il faut s’assurer que le nom de l’attribut correspond au fx:id dans le fichier .fxml
- il faut s’assurer d’utiliser @FXML au dessus de nom de l’attribut

Java03 #

javafx.fxml.LoadException:
/home/mbergeron/__ca.ntro/4f5/tut04/build/resources/main/file_attente.xml

        at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2707)
        at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2949)
        at javafx.fxml.FXMLLoader.processImport(FXMLLoader.java:2793)
        at javafx.fxml.FXMLLoader.processProcessingInstruction(FXMLLoader.java:2758)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2624)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
        at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2516)
        at ca.ntro.app.views.ViewLoaderFx.createView(ViewLoaderFx.java:145)
        at pong.frontal.taches.Initialisation.lambda$creerVueFileAttente$3(Initialisation.java:76)
        at ca.ntro.app.tasks.SimpleTaskCreatorNtro.executeTaskForValue(SimpleTaskCreatorNtro.java:118)
        at ca.ntro.app.tasks.SimpleTaskCreatorNtro.lambda$registerExecutionForValueHandler$1(SimpleTaskCreatorNtro.java:111)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskTraceNtro.executeTask(TaskTraceNtro.java:150)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskTraceNtro.executeOneStep(TaskTraceNtro.java:128)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.lambda$executeLoop$1(TaskGraphTraceNtro.java:179)
        at ca.ntro.core.stream.StreamNtro.lambda$reduceToResult$10(StreamNtro.java:196)
        at ca.ntro.core.stream.StreamNtro.lambda$applyReducer$0(StreamNtro.java:44)
        at ca.ntro.core.stream.StreamForMapValues.forEach_(StreamForMapValues.java:36)
        at ca.ntro.core.stream.StreamNtro.applyReducer(StreamNtro.java:42)
        at ca.ntro.core.stream.StreamNtro.reduceToResult(StreamNtro.java:194)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.executeLoop(TaskGraphTraceNtro.java:175)
        at ca.ntro.core.task_graphs.task_graph_trace.TaskGraphTraceNtro.execute(TaskGraphTraceNtro.java:153)
        at ca.ntro.app.tasks.TaskFactoryNtro.executeTasks(TaskFactoryNtro.java:86)
        at ca.ntro.app.frontend.FrontendRegistrarNtro.executeTasks(FrontendRegistrarNtro.java:149)
        at ca.ntro.app.AppWrapperFx.start(AppWrapperFx.java:99)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
        at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
        at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
        at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:316)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.ClassNotFoundException: javafx.scene.layout.Vbox
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        at javafx.fxml.FXMLLoader.loadTypeForPackage(FXMLLoader.java:3017)
        at javafx.fxml.FXMLLoader.loadType(FXMLLoader.java:3006)
        at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2947)
        ... 31 more

La classe Vbox n’existe pas
Correctif: il faut importer VBox et non Vbox

Linux #

Windows #

Outils réseau #

Exercices interactifs #

Le prof doit fournir une version balisée du message d’erreur
Une page Web va afficher le message d’erreur
L’étudiant·e va pouvoir
- cacher et afficher des sections (selon les balises fournies par l’enseignant·e)
- identifier les sections importantes
- construire des hypothèses (à l’aide de choix de réponses fournis par l’enseignant·e)
L’étudiant·e marque des points lorsque les bonnes actions sont prises
- (tentative de rendre l’exercice ludique)

Livrable #

la petite application Web qui interpréte les balises (HTML+Javascript?)
environs 10 exemples de messages d’erreur annotés avec des balises
une démo en vidéo du fonctionnement pour l’étudiant·e
un catalogue de messages d’erreur colligés par les enseignant·es d’info (mais pas encore annotés avec des balises)