so here it is.. i am new to javaFX and trying to run my first code so this is the error i get.. dont have any idea what is means!
Exception in Application constructor
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class fx_example.example
at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$152(Unknown Source)
at com.sun.javafx.application.LauncherImpl$$Lambda$50/1323468230.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$158(Unknown Source)
at com.sun.javafx.application.LauncherImpl$$Lambda$51/788672666.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/186276003.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/622793233.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/237061348.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$36/2117255219.run(Unknown Source)
... 1 more
Caused by: java.lang.NullPointerException: Root cannot be null
at javafx.scene.Scene.<init>(Unknown Source)
at javafx.scene.Scene.<init>(Unknown Source)
at fx_example.example.<init>(example.java:12)
... 18 more
Exception running application fx_example.example
i am new to all this and dont know wt it means... i really wanna know more about fx
Related
im trying to use jpackage but my .exe doesn't work. I haven´t work with maven before and actually this is my first big proyect so...if you can help me I would be thankful That is the exception in the console, Im in W11. IDK what to do, i dont know where is my mistake...........................................................................................................jpackage, module-info
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml#18.0.2/javafx.fxml.FXMLLoader$MethodHandler.invoke(Unknown Source)
at javafx.fxml#18.0.2/javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at javafx.base#18.0.2/javafx.event.Event.fireEvent(Unknown Source)
at javafx.graphics#18.0.2/javafx.scene.Node.fireEvent(Unknown Source)
at javafx.controls#18.0.2/javafx.scene.control.Button.fire(Unknown Source)
at javafx.controls#18.0.2/com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source) at javafx.controls#18.0.2/com.sun.javafx.scene.control.inputmap.InputMap.handle(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
at javafx.base#18.0.2/javafx.event.Event.fireEvent(Unknown Source)
at javafx.graphics#18.0.2/javafx.scene.Scene$MouseHandler.process(Unknown Source)
at javafx.graphics#18.0.2/javafx.scene.Scene.processMouseEvent(Unknown Source)
at javafx.graphics#18.0.2/javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
at javafx.graphics#18.0.2/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
at javafx.graphics#18.0.2/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Unknown Source)
at javafx.graphics#18.0.2/com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(Unknown Source)
at javafx.graphics#18.0.2/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(Unknown Source)
at javafx.graphics#18.0.2/com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
at javafx.graphics#18.0.2/com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
at javafx.graphics#18.0.2/com.sun.glass.ui.View.notifyMouse(Unknown Source)
at javafx.graphics#18.0.2/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics#18.0.2/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.reflect.Trampoline.invoke(Unknown Source)
at jdk.internal.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at javafx.base#18.0.2/com.sun.javafx.reflect.MethodUtil.invoke(Unknown Source)
at javafx.fxml#18.0.2/com.sun.javafx.fxml.MethodHelper.invoke(Unknown Source)
... 47 more
Caused by: java.lang.NoClassDefFoundError: javax/naming/NamingException
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:186)
at java.sql/java.sql.DriverManager.getConnection(Unknown Source)
at java.sql/java.sql.DriverManager.getConnection(Unknown Source)
at com.example.inicio.Conexion.<init>(Conexion.java:13)
at com.example.inicio.HelloController.BTN_Llenar(HelloController.java:123)
... 57 more
Caused by: java.lang.ClassNotFoundException: javax.naming.NamingException
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 62 more
I'm new in JavaFX. I created JavaFX project with maven and I add all dependecies. Project in idea works perfectly but when I build it in maven and try to open in target folder jar dosn't react and it gives following errors.
java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at sample.JdbcPlainTest.createConnection(JdbcPlainTest.java:21)
at sample.JdbcPlainTest.ProductsSelectQuery(JdbcPlainTest.java:84)
at sample.Controller.initialize(Controller.java:84)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at sample.Main.start(Main.java:14)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$153
(Unknown Source)
at com.sun.javafx.application.LauncherImpl$$Lambda$51/881058039.run(Unkn
own Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$166(Unknown
Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$45/584634336.run(Unkn
own Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$164(Unknown Sourc
e)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/474818150.run(Unkn
own Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$165(Unknown S
ource)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/501263526.run(Unkn
own Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$37/96639997.run(Unknown S
ource)
at java.lang.Thread.run(Unknown Source) Exception in Application start method java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unk
nown Source)
at com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Sou
rce)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source) Caused by: java.lang.RuntimeException: Exception in Application start
method
at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown So
urce)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$147(
Unknown Source)
at com.sun.javafx.application.LauncherImpl$$Lambda$48/815033865.run(Unkn
own Source)
at java.lang.Thread.run(Unknown Source) Caused by: javafx.fxml.LoadException:
file:/D:/work%20proyeqt%20immidetely/JASMIN/Qassa%20-%20CopyWORKING/target/Qassa
Copy-1.0-SNAPSHOT.jar!/sample.fxml
at javafx.fxml.FXMLLoader.constructLoadException(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at sample.Main.start(Main.java:14)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$153
(Unknown Source)
at com.sun.javafx.application.LauncherImpl$$Lambda$51/881058039.run(Unkn
own Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$166(Unknown
Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$45/584634336.run(Unkn
own Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$164(Unknown Sourc
e)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/474818150.run(Unkn
own Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$165(Unknown S
ource)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/501263526.run(Unkn
own Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$37/96639997.run(Unknown S
ource)
... 1 more Caused by: java.lang.NullPointerException
at sample.JdbcPlainTest.ProductsSelectQuery(JdbcPlainTest.java:108)
at sample.Controller.initialize(Controller.java:84)
... 23 more Exception running application sample.Main
seems your dependencies are not included into your jar. Open your .jar and see whether all the dependency classes (like com.mysql.cj.jdbc.Driver) are inside. If they are not please see, Including dependencies in a jar with Maven.
Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
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I am trying to load an FXML file as I am learning JavaFX. I made a FXML File and tried to load it but I kept on getting an error. I have checked through many tutorials and examples and I don't know what I am doing wrong! The error I was getting was:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: javafx.fxml.LoadException:
/C:/Users/Jacob/Desktop/JavaFX/JavaFX/builds/main/login.fxml%20:9
at javafx.fxml.FXMLLoader.constructLoadException(Unknown Source)
at javafx.fxml.FXMLLoader.access$700(Unknown Source)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(Unknown Source)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(Unknown Source)
at javafx.fxml.FXMLLoader$Element.processStartElement(Unknown Source)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(Unknown Source)
at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at main.Test.start(Test.java:21)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(Unknown Source)
... 1 more
Caused by: java.lang.ClassNotFoundException: FXML.controllers.loginScenceController
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 23 more
Exception running application main.Test
There must be some errors in your controller class or your .fxml file, put some souts and check where is the error coming from
I know this may be a really dumb question, but I'm testing out the Interactions pane in drJav.
I create a String variable, then try to do .length on it:
String fish;
String[] hooo;
hooo.length
then I get an error, whic is puzzling me :
edu.rice.cs.util.UnexpectedException: java.lang.NullPointerException
at edu.rice.cs.drjava.model.repl.newjvm.MainJVM$ResultHandler.forUnexpectedException(MainJVM.java:1045)
at edu.rice.cs.drjava.model.repl.newjvm.MainJVM$ResultHandler.forUnexpectedException(MainJVM.java:992)
at edu.rice.cs.drjava.model.repl.newjvm.InterpretResult$UnexpectedExceptionResult.apply(InterpretResult.java:111)
at edu.rice.cs.drjava.model.repl.newjvm.MainJVM.interpret(MainJVM.java:351)
at edu.rice.cs.drjava.model.repl.RMIInteractionsModel._interpret(RMIInteractionsModel.java:75)
at edu.rice.cs.drjava.model.repl.InteractionsModel.interpret(InteractionsModel.java:291)
at edu.rice.cs.drjava.model.repl.InteractionsModel$2$1.run(InteractionsModel.java:241)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at java.lang.reflect.Array.getLength(Native Method)
at edu.rice.cs.dynamicjava.symbol.ArrayLengthField$1.value(ArrayLengthField.java:27)
at edu.rice.cs.dynamicjava.interpreter.ExpressionEvaluator.visit(ExpressionEvaluator.java:56)
at koala.dynamicjava.tree.ObjectFieldAccess.acceptVisitor(ObjectFieldAccess.java:92)
at edu.rice.cs.dynamicjava.interpreter.ExpressionEvaluator.value(ExpressionEvaluator.java:38)
at edu.rice.cs.dynamicjava.interpreter.ExpressionEvaluator.value(ExpressionEvaluator.java:37)
at edu.rice.cs.dynamicjava.interpreter.StatementEvaluator.visit(StatementEvaluator.java:106)
at edu.rice.cs.dynamicjava.interpreter.StatementEvaluator.visit(StatementEvaluator.java:29)
at koala.dynamicjava.tree.ExpressionStatement.acceptVisitor(ExpressionStatement.java:101)
at edu.rice.cs.dynamicjava.interpreter.StatementEvaluator.evaluateSequence(StatementEvaluator.java:66)
at edu.rice.cs.dynamicjava.interpreter.Interpreter.evaluate(Interpreter.java:77)
at edu.rice.cs.dynamicjava.interpreter.Interpreter.interpret(Interpreter.java:47)
at edu.rice.cs.drjava.model.repl.newjvm.InterpreterJVM.interpret(InterpreterJVM.java:246)
at edu.rice.cs.drjava.model.repl.newjvm.InterpreterJVM.interpret(InterpreterJVM.java:220)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
... 1 more
Caused by:
java.lang.NullPointerException
at java.lang.reflect.Array.getLength(Native Method)
at edu.rice.cs.dynamicjava.symbol.ArrayLengthField$1.value(ArrayLengthField.java:27)
at edu.rice.cs.dynamicjava.interpreter.ExpressionEvaluator.visit(ExpressionEvaluator.java:56)
at koala.dynamicjava.tree.ObjectFieldAccess.acceptVisitor(ObjectFieldAccess.java:92)
at edu.rice.cs.dynamicjava.interpreter.ExpressionEvaluator.value(ExpressionEvaluator.java:38)
at edu.rice.cs.dynamicjava.interpreter.ExpressionEvaluator.value(ExpressionEvaluator.java:37)
at edu.rice.cs.dynamicjava.interpreter.StatementEvaluator.visit(StatementEvaluator.java:106)
at edu.rice.cs.dynamicjava.interpreter.StatementEvaluator.visit(StatementEvaluator.java:29)
at koala.dynamicjava.tree.ExpressionStatement.acceptVisitor(ExpressionStatement.java:101)
at edu.rice.cs.dynamicjava.interpreter.StatementEvaluator.evaluateSequence(StatementEvaluator.java:66)
at edu.rice.cs.dynamicjava.interpreter.Interpreter.evaluate(Interpreter.java:77)
at edu.rice.cs.dynamicjava.interpreter.Interpreter.interpret(Interpreter.java:47)
at edu.rice.cs.drjava.model.repl.newjvm.InterpreterJVM.interpret(InterpreterJVM.java:246)
at edu.rice.cs.drjava.model.repl.newjvm.InterpreterJVM.interpret(InterpreterJVM.java:220)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Thank You,
I know it's an empty array, but I want it to show me that - i.e 0 should come up.
You didn't assign a value to hooo, so its value is null. When you attempt to access a property of a null object, you are thrown a NullPointerException.
Instead, try something like the following.
String fish;
String[] hooo = {"Hello!", "Let's be friends."};
hooo.length;
Because in here you did not initialize the variable hooo that's why it gives error. you can do that like
String[] hooo = new String[0];
or
String[] hooo = {"hooo", "hoooo", "hoooooooooooo"};
Just by declaring a variable does not initialize it! You need to create a new array object and assign to it.
Ok, I am at a loss. I am having a Null pointer on this line:
JAXBContext context = JAXBContext.newInstance( X3D.class );
And here is the output error thing:
Exception in thread "main" java.lang.NullPointerException
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.checkOverrideProperties(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementProperty.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementNodeProperty.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(Unknown Source)
at com.sun.xml.internal.bind.v2.ContextFactory.createContext(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
at javax.xml.bind.ContextFinder.find(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
at com.prim.esaa.gui.x3d.MyXmlWriter.myWriteFile(MyXmlWriter.java:159)
at com.prim.esaa.gui.x3d.MyXmlWriter.myWrite(MyXmlWriter.java:199)
at com.prim.esaa.gui.x3d.Sim3DAnimator.writeXMLoutput(Sim3DAnimator.java:266)
at com.prim.esaa.gui.x3d.Sim3DAnimator.initModels(Sim3DAnimator.java:212)
at com.prim.esaa.gui.x3d.Sim3DAnimator.main(Sim3DAnimator.java:141)
I realize that not all the code is there and I can add more but if I understand correctly, this command setups stuff and is not at all dependent on any of my other variables. And it was working and then just stopped. I don't know why.
It says over and over again "Unknown Source" but I include the path and class X3D so that it should be fine.
Thanks.
try another version of JAXB, look http://java.net/jira/browse/JAXB-860