ScrollBar movement not smooth in JScrollpane in Swing

Question

I have a situation like this. I have scrollpane whose viewportView is a JPanel And that JPanel has the layout as BoxLayout. In this panel I add one class which extends JPane

Answer 1

As @mKorbel notes, both JTable and JList implement Scrollable for convenient scroll increments, and they both use the flyweight pattern for rendering speed. If you can't use either component directly, you can still use the patterns. The tutorial includes Scrollable examples, and there's a CellRendererPane example here.