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JFXtras / jfxtras

A supporting library for JavaFX, containing helper classes, extended layouts, controls and other interesting widgets.
http://jfxtras.org
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java.lang.UnsupportedClassVersionError #104

Closed fvhde closed 5 years ago

fvhde commented 5 years ago

I'm using Java 8 and i got this error

jfxtras/scene/control/agenda/Agenda$AppointmentGroup has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) 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 com.sun.javafx.application.LauncherImpl.lambda$launchApplicationWithArgs$155(LauncherImpl.java:352) at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326) at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177) at java.lang.Thread.run(Unknown Source) java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source) Caused by: java.lang.NullPointerException at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:383) at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328) ... 5 more

tbee commented 5 years ago

What version of JFXtras did you include in your project? 53.0 is Java 9.

fvhde commented 5 years ago

I'm using version 9.0, i've started my project with java 8 and i tried to add JFXtras agenda

tbee commented 5 years ago

Apparently you are running your application with Java 8 then. JFXtras 9 is compiled with Java 9, you need to run it with Java 9.

fvhde commented 5 years ago

Il there is no way to avoid Jfxtras for Java 8? I'm scared of the problems of dependence if I go to Java 9

tbee commented 5 years ago

JFXtras 8 is for Java 8.

fvhde commented 5 years ago

Thank you I will try with version 8