It works!!! Thanks Aaron Cohen and Mark Rathwell.

The code final that works 100% of the example cone6 of vtk in clojure is 
this:

(ns example
  (:import (javax.swing JFrame JPanel SwingUtilities)))

(clojure.lang.RT/loadLibrary "vtkCommonJava")
(clojure.lang.RT/loadLibrary "vtkWidgetsJava")

(def boxWidget  (vtk.vtkBoxWidget.))

(def myCallback
  (fn []
    (println "Invoked!")
    (let [t (vtk.vtkTransform.)]
      (doto boxWidget
        (.GetTransform t)
        (.. GetProp3D (SetUserTransform t))
        ))))

(defn main []
  (let [cone       (vtk.vtkConeSource.)
        coneMapper (vtk.vtkPolyDataMapper.)
        coneActor  (vtk.vtkActor.)
        ren        (vtk.vtkRenderer.)
        renWin     (vtk.vtkRenderWindow.)
        iren       (vtk.vtkRenderWindowInteractor.)
        style      (vtk.vtkInteractorStyleTrackballCamera.)
        t          (vtk.vtkTransform.)]

    (doto cone
      (.SetHeight 3.0)
      (.SetRadius 1.0)
      (.SetResolution 10))
    (doto coneMapper
      (.SetInput (.GetOutput cone)))
    (doto coneActor
      (.SetMapper coneMapper))
    (doto ren
      (.GradientBackgroundOn)
      (.SetBackground 0.5 0.6 0.8)
      (.AddActor coneActor)
      (.ResetCamera))
    (doto renWin
      (.AddRenderer ren)
      (.SetSize 300 300))
    (doto iren
      (.SetRenderWindow renWin)
      (.SetInteractorStyle style))
    (doto boxWidget
      (.SetInteractor iren)
      (.SetPlaceFactor 1.25)
      (.SetProp3D coneActor)
      (.PlaceWidget)
      (.AddObserver "InteractionEvent" myCallback "run")
      (.On))
    (doto iren
      (.Initialize)
      (.Start))))

(example/main)

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