how to refresh JScrollPane.viewPort on maximizing and minimize

Question

Could you please tell me how can I refresh viewPort or maximizing and minimizing the window in JScrollPane. I know I may have to called repaint or revalidate but I do not how write listener for that.

Minimize window

Maximize window

Answer 1

The content should implement Scrollable:

public boolean scrollableTracksViewportWidth() {
    return true;
}

This will also block horizontal scrolling.