How to auto scroll to bottom in Java Swing

java swing scroll jpanel jscrollpane
pathikrit picture pathikrit · Jun 16, 2011 · Viewed 17.2k times · Source

I have a simple JPanel with a JScrollPane (with vertical scrollbar as needed) on it.

Things get added to (or removed from) the JPanel and when it goes beyond the bottom of the panel, I want the JScrollPane to scroll down to the bottom automatically as needed or scroll up if some components go away from the panel.

How shall I do this? I am guessing I need some kind of listener which gets called whenever the JPanel height changes? Or is there something as simple as JScrollPanel.setAutoScroll(true)?

Answer

zerodefect picture zerodefect · Apr 3, 2013 
scrollPane.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener() {  
        public void adjustmentValueChanged(AdjustmentEvent e) {  
            e.getAdjustable().setValue(e.getAdjustable().getMaximum());  
        }
    });

This would be the best. Found from JScrollPane and JList auto scroll

Related questions

Scrolling a JPanel

I want a JPanel with a size and defined position. Inside the JPanel, I've certain number of elements (buttons) inserted horizontally. Because my JPanel has a defined width, if I add much buttons, I couldn't see that. In this case, …

Read More
Scrollable JPanel

How to make a JPanel scrollable? I implemented the scrollable interface yet when adding it to the containing panel with tabbedPane.add("Editor", new JScrollPane(storeyEditor = new MNScrollablePanel())); nothing works Code: public class MNScrollablePanel extends JPanel implements Scrollable { public Dimension …

Read More
How do I speed up the scroll speed in a JScrollPane when using the mouse wheel?

I see the method JScrollPane.setWheelScrollingEnabled(boolean) to enable or disable the mouse wheel scrolling. Is there any way to adjust the speed of the scrolling, though? It is, in my opinion, ludicrously slow. No matter what size I make …

Read More