Scroll Event of a JScrollPane

java swing event-handling jscrollpane
aps picture aps · Jul 3, 2011 · Viewed 24.3k times · Source

It's strange that JScrollPane doesn't have a method addAdjustmentListener(). Yet adjustmentListener is said to be used with scrollbars. I want something to happen whenever the JScrollPane is scrolled in either way. How to achieve such a thing?

Answer

Jesse Barnum picture Jesse Barnum · Jul 3, 2011

Instead of trying to listen for changes from the JScrollPane, get the viewport for that scroll pane add a change listener to it:

http://download.oracle.com/javase/6/docs/api/javax/swing/JViewport.html#addChangeListener(javax.swing.event.ChangeListener)

Related questions

the getSource() and getActionCommand()

What is getSource? and what does it return? and what is getActionCommand() and what does it return?? I am getting confused between these two can anyone give or differentiate them to me? what's the use of getSource and getActionCommand() in …

Read More
JTable: Detect cell data change

In Netbeans, I used the GUI Builder to insert a JTable into my application. I have just one class (CustomerDB) so far which is: package CustomerDB; import [...]; public class CustomerDB extends javax.swing.JFrame { CellEditorListener ChangeNotification = new CellEditorListener() { public void …

Read More
JSpinner Value change Events

How to make the update immediately when the jSpinner value was changed. ChangeListener listener = new ChangeListener() { public void stateChanged(ChangeEvent e) { jLabel.setText(e.getSource()); } }; spinner1.addChangeListener(listener); The code above doesnt change the label text automatically, it required you …

Read More