Try both together:
jScrollPane.setOpaque(false);
jScrollPane.getViewPort().setOpaque(false);
Question
how is it possible to see behind of a JScrollPane
? I tried to do that via:
JScrollPane.setOpaqe(false);
but it didn't work...
Solution
Try both together:
jScrollPane.setOpaque(false);
jScrollPane.getViewPort().setOpaque(false);