pkg load java
javaaddpath(".");

vtk_surf(rand(10));
jd = java_new("javax.swing.JDialog");
sl = java_new("OctSlider", "Slider1", "callback", 0, 359, 0);
jd.add(sl);
jd.setModal(1);
a = jd.setVisible(1);
disp(a)
pkg unload java