Error while running void start()

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Good, I was doing some coding of the proposed exercises. When I went to execute the following error:

java.lang.IllegalStateException: Toolkit not initialized

at com.sun.javafx.application.PlatformImpl.runLater(PlatformImpl.java:273)

at com.sun.javafx.application.PlatformImpl.runLater(PlatformImpl.java:268)

at javafx.application.Platform.runLater(Platform.java:83)

at bluej.runtime.ExecServer.runOnTargetThread(ExecServer.java:902)

at bluej.runtime.ExecServer.access$700(ExecServer.java:78)

at bluej.runtime.ExecServer$3.run(ExecServer.java:767)

and now whatever program you try to run gives this error.

javafx drawing

  • make the code available for someone to test.

  • Already tried to restart the machine?

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I managed to solve it seems that the problem is in the file itself,IE, creating a new project and copying the same codes will be all right.

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