i'm currently attaching to a java webstart application (anything from here: https://docs.oracle.com/javase/tutorial/uiswing/examples/misc/index.html#security) using the Java Attach API.
That works without problems, but now i want to iterate over all available Frames using
for (Frame f : java.awt.Frame.getFrames())
But this results in
java.lang.NullPointerException
at java.awt.Window.getWindows(Unknown Source)
at java.awt.Window.getWindows(Unknown Source)
at java.awt.Frame.getFrames(Unknown Source)
at com.asc.screen.scan.javascan.javascanagent.util.GuiWalkerTexasRanger.walkGui(GuiWalkerTexasRanger.java:151)
at com.asc.screen.scan.javascan.javascanagent.ComponentRegistry.initialScan(ComponentRegistry.java:124)
at com.asc.screen.scan.javascan.javascanagent.ComponentRegistry.init(ComponentRegistry.java:76)
at com.asc.screen.scan.javascan.javascanagent.JavaScanAgent.loadFilter(JavaScanAgent.java:291)
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$ConnectionHandler.lambda$run$0(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
...
Maybe i'm missing something here, but shouldn't it be possible to access all frames within the applet? This method works fine for non applet applications.
The problem is that the error is thrown inside the java code, so there is no way for me to avoid or handle this nullpointer, and i'm not getting any frames back.
Thanks in advance.
Related
My previous question was deleted here because it was considered as duplicate. I say it's not because the answers were about java itself while mine is about charles proxy and those answers didn't resolve my problem.
I had installed jdk-17.0.1 and jre1.8.0_311 on my machine when I tried to open charles proxy 4.6.2 on double click but nothing happened, the application didn't start. I try to open via command prompt by typing Charles.exe and this error is shown
java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
at java.desktop/java.awt.Toolkit.newAWTError(Unknown Source)
at java.desktop/java.awt.Toolkit.fallbackToLoadClassForAT(Unknown Source)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.base/java.util.stream.ReferencePipeline.forEach(Unknown Source)
at java.desktop/java.awt.Toolkit.loadAssistiveTechnologies(Unknown Source)
at java.desktop/java.awt.Toolkit.getDefaultToolkit(Unknown Source)
at de.sciss.syntaxpane.DefaultSyntaxKit.<clinit>(DefaultSyntaxKit.java:105)
at com.xk72.charles.gui.lib.UIUtils.<clinit>(Unknown Source)
at com.xk72.charles.gui.s.h(Unknown Source)
at com.xk72.charles.gui.Main.c(Unknown Source)
at com.xk72.charles.Main.b(Unknown Source)
at com.xk72.charles.gui.Main.main(Unknown Source)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.xk72.lib.a.a(Unknown Source)
at com.xk72.charles.gui.MainWithClassLoader.main(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.sun.java.accessibility.AccessBridge
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Unknown Source)
... 24 more
I'm using Windows 10 64bit. %JAVA_HOME% is also setup
For me going to C:\Users\my account\.accessibility.properties and commenting out every line by adding a # a front of it worked.(I at least don't need the accessibility)
Found this solution at: Exception in thread "main" java.awt.AWTError: Assistive Technology not found
I am trying to implement the RangeSlider class in a program, however, I am receiving the following error:
Exception in Application start method
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 javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unknown Source)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Source)
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 java.base/sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalAccessError: class impl.org.controlsfx.behavior.RangeSliderBehavior (in unnamed module #0x74bf073e) cannot access class com.sun.javafx.scene.control.inputmap.InputMap$Mapping (in module javafx.controls) because module javafx.controls does not export com.sun.javafx.scene.control.inputmap to unnamed module #0x74bf073e
at impl.org.controlsfx.behavior.RangeSliderBehavior.<init>(RangeSliderBehavior.java:67)
at impl.org.controlsfx.skin.RangeSliderSkin.<init>(RangeSliderSkin.java:95)
at org.controlsfx.control.RangeSlider.createDefaultSkin(RangeSlider.java:194)
at javafx.controls/javafx.scene.control.Control.doProcessCSS(Unknown Source)
at javafx.controls/javafx.scene.control.Control.access$000(Unknown Source)
at javafx.controls/javafx.scene.control.Control$1.doProcessCSS(Unknown Source)
at javafx.controls/com.sun.javafx.scene.control.ControlHelper.processCSSImpl(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(Unknown Source)
at javafx.graphics/javafx.scene.Parent.doProcessCSS(Unknown Source)
at javafx.graphics/javafx.scene.Parent.access$400(Unknown Source)
at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(Unknown Source)
at javafx.graphics/javafx.scene.Parent.doProcessCSS(Unknown Source)
at javafx.graphics/javafx.scene.Parent.access$400(Unknown Source)
at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(Unknown Source)
at javafx.graphics/javafx.scene.Parent.doProcessCSS(Unknown Source)
at javafx.graphics/javafx.scene.Parent.access$400(Unknown Source)
at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(Unknown Source)
at javafx.graphics/javafx.scene.Node.processCSS(Unknown Source)
at javafx.graphics/javafx.scene.Scene.doCSSPass(Unknown Source)
at javafx.graphics/javafx.scene.Scene.preferredSize(Unknown Source)
at javafx.graphics/javafx.scene.Scene$2.preferredSize(Unknown Source)
at javafx.graphics/com.sun.javafx.scene.SceneHelper.preferredSize(Unknown Source)
at javafx.graphics/javafx.stage.Window$12.invalidated(Unknown Source)
at javafx.base/javafx.beans.property.BooleanPropertyBase.markInvalid(Unknown Source)
at javafx.base/javafx.beans.property.BooleanPropertyBase.set(Unknown Source)
at javafx.graphics/javafx.stage.Window.setShowing(Unknown Source)
at javafx.graphics/javafx.stage.Window.show(Unknown Source)
at javafx.graphics/javafx.stage.Stage.show(Unknown Source)
at minimalist.DoubleSliderInterface.start(DoubleSliderInterface.java:104)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(Unknown Source)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$11(Unknown Source)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$9(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(Unknown Source)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(Unknown Source)
... 1 more
Exception running application minimalist.DoubleSliderInterface
I am using ControlsFX version 9.0.0 while running Java 10 on Eclipse, however, I believe I can rule out incompatibility with the Java version as I also tried running this on Java 9.0.4 and as well was able to successfully run the Rating class.
My code is just a number of instances of the following, succeeded by a VBox to contain them, a group, and the scene and stage as is normal-
final RangeSlider blur = new RangeSlider(0,30,0,30);
Text blurTitle = new Text("Blur");
Text blurMin = new Text();
blurMin.textProperty().bindBidirectional(blur.lowValueProperty(),converter);
Text blurMax = new Text();
blurMax.textProperty().bindBidirectional(blur.highValueProperty(),converter);
HBox blurBox = new HBox();
blurBox.getChildren().addAll(blurMin,blur,blurMax);
blurBox.setPadding(new Insets(5));
blurBox.setSpacing(10);
Any help is appreciated, thanks.
Adding --add-exports=javafx.controls/com.sun.javafx.scene.control.inputmap=ALL-UNNAMED to your VM arguments when running the application will resolve the issue. Answer thanks to #kleopatra
There is already a bug report on their bitbucket page. It looks like it's just not compatible with java9+
https://bitbucket.org/controlsfx/controlsfx/issues/802/rangeslider-uses-inaccessable-package
I didn't read the code of this specific control but you might be able to copy the code you need and remove the part that uses the InputMap related classes.
Other than that you are probably better off downgrading to java8 or using another ui element to mimic similar behavior.
Hello Friend's plz help me on this. When i run this code in my java file
code: Parent root=FXMLLoader.load(getClass().getResource("first.fxml"));
to get the fxml file that contain the Java Builder code, then i face these Problems. My code is not run. Problems are:
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$155(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException: Location is required.
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)
at firt.first.start(first.java:17)
at com.sun.javafx.application.LauncherImpl.lambda$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
Exception running application firt.first
Plz help me, guide me what to do ......
In your exception it says "Caused by: java.lang.NullPointerException: Location is required."
You have to set the correct location of your fxml file.
Parent root=FXMLLoader.load(getClass().getResource("first.fxml"));
According to your code, your fxml file is expected to be in the same folder like your .java file on the system.
I'm trying to launch a runnable JAR file via web start, but am encountering an error with java not being able to find an external JAR (I think). When running the JNLP file, JWS starts, but then states that the application cannot be opened due to this error:
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.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/net/ftp/FTPClient
at DevChat.canConnect(DevChat.java:326)
at DevChat.<init>(DevChat.java:89)
at DevChat.main(DevChat.java:348)
... 9 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.net.ftp.FTPClient
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 12 more
The external JAR file mentioned, apache commons, is embedded in the runnable JAR and the JAR runs fine on it's own, just not in JWS. Suggestions?
I'm running into an issue with my applet. It's supposed to take a url and parse the html there to construct an image. I've gotten it to work on my eclipse debugger. However, when I try to use it on a web browser I get an AccessControlException. I'm using the jEditorPane.setPage(url) method. Currently both the applet and url are hosted on my localhost and I did self sign the applet.
java.lang.RuntimeException: java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:80 connect,resolve)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at javax.swing.JEditorPane.getStream(Unknown Source)
at javax.swing.JEditorPane.setPage(Unknown Source)
at javax.swing.JEditorPane.setPage(Unknown Source)
at com.mindbody.printer.PrinterApplet.print(PrinterApplet.java:24)
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.plugin.javascript.JSInvoke.invoke(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.plugin.javascript.JSClassLoader.invoke(Unknown Source)
at sun.plugin2.liveconnect.JavaClass$MethodInfo.invoke(Unknown Source)
at sun.plugin2.liveconnect.JavaClass$MemberBundle.invoke(Unknown Source)
at sun.plugin2.liveconnect.JavaClass.invoke0(Unknown Source)
at sun.plugin2.liveconnect.JavaClass.invoke(Unknown Source)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$DefaultInvocationDelegate.invoke(Unknown Source)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.doObjectOp(Unknown Source)
at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$LiveConnectWorker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
An unsigned applet is only allowed to connect to the host it came from. And even for signed applets, in methods invoked from code less trusted (like the javascript code here), it has only the rights of this code (or more exactly, the intersection of all rights).
To be able to do everything for which your applet has the rights, wrap your rights-needing code with AccessController.doPrivileged(...). (But make sure that this can not do dangerous things when given malicious arguments from outside.)