title: javafx controlfx dialog box gives error
body: <p>I use using following codes to open a dialog box in my current project as i have read about controlfx and its awesome dialogbox so i have used its code in my project but it gives error and i don't know why?</p>
  
  <pre><code> Dialogs.create()
          .owner(SchoolManagement2.stage1)
          .title("Information Dialog")
          .masthead("Look, an Information Dialog")
          .message("I have a great message for you!")
          .showInformation();
  </code></pre>
  
  <p>I have added following jar</p>
  
  <pre><code>controlsfx-8.0.6_20.jar
  controlsfx-samples-8.0.6_20.jar
  fxsampler-1.0.6_20.jar
  </code></pre>
  
  <p>I am getting following error:</p>
  
  <pre><code>java.lang.RuntimeException: ControlsFX Error: ControlsFX 8.0.6_20 requires at least Java 8u20
      at impl.org.controlsfx.version.VersionChecker.doVersionCheck(VersionChecker.java:83)
      at org.controlsfx.control.ControlsFXControl.&lt;init&gt;(ControlsFXControl.java:35)
      at org.controlsfx.control.ButtonBar.&lt;init&gt;(ButtonBar.java:366)
      at org.controlsfx.control.ButtonBar.&lt;init&gt;(ButtonBar.java:357)
      at org.controlsfx.dialog.Dialog.createButtonPanel(Dialog.java:1034)
      at org.controlsfx.dialog.Dialog.createCenterPanel(Dialog.java:1029)
      at org.controlsfx.dialog.Dialog.buildDialogContent(Dialog.java:950)
      at org.controlsfx.dialog.Dialog.show(Dialog.java:320)
      at org.controlsfx.dialog.Dialogs.showSimpleContentDialog(Dialogs.java:1106)
      at org.controlsfx.dialog.Dialogs.showInformation(Dialogs.java:531)
      at schoolmanagement2.FeesdepositeController.show(FeesdepositeController.java:633)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:483)
      at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
      at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:483)
      at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
      at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1763)
      at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1651)
      at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
      at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
      at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
      at javafx.event.Event.fireEvent(Event.java:204)
      at javafx.scene.Node.fireEvent(Node.java:8175)
      at javafx.scene.control.Button.fire(Button.java:185)
      at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
      at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
      at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
      at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
      at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
      at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
      at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
      at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
      at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
      at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
      at javafx.event.Event.fireEvent(Event.java:204)
      at javafx.scene.Scene$MouseHandler.process(Scene.java:3746)
      at javafx.scene.Scene$MouseHandler.access$1800(Scene.java:3471)
      at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1695)
      at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2486)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:314)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:243)
      at java.security.AccessController.doPrivileged(Native Method)
      at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:345)
      at com.sun.glass.ui.View.handleMouseEvent(View.java:526)
      at com.sun.glass.ui.View.notifyMouse(View.java:898)
      at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
      at com.sun.glass.ui.win.WinApplication.access$300(WinApplication.java:39)
      at com.sun.glass.ui.win.WinApplication$4$1.run(WinApplication.java:112)
  </code></pre>
  
  <p>the error shows <code>ControlsFX Error: ControlsFX 8.0.6_20 requires at least Java 8u20</code> so i have installed <code>jdk-8u20-ea-bin-b22-windows-x64-08_jul_2014.exe</code> but error remains same.</p>
  
  <p>Please help me.</p>