import javax.swing.*; 
import javax.swing.event.*; 
import java.awt.*; 
 
public class ScrollSlider { 
public static void main(String args[]) { 
JFrame f = new JFrame("Change Slider"); 
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
 
JSlider aJSlider = new JSlider (JSlider.HORIZONTAL, 0, 1000, 500); 
ChangeListener aChangeListener = new BoundedChangeListener(); 
aJSlider.addChangeListener(aChangeListener); 
Container c = f.getContentPane(); 
c.add (aJSlider, BorderLayout.SOUTH); 
f.setSize (300, 200); 
f.setVisible (true); 
} 
} 
class BoundedChangeListener implements ChangeListener { 
public void stateChanged(ChangeEvent changeEvent) { 
Object source = changeEvent.getSource(); 
if (source instanceof BoundedRangeModel) { 
BoundedRangeModel aModel = (BoundedRangeModel) source; 
if (!aModel.getValueIsAdjusting()) { 
System.out.println("Changed: " + aModel.getValue()); 
} 
} else if (source instanceof JSlider) { 
JSlider theJSlider = (JSlider) source; 
if (!theJSlider.getValueIsAdjusting()) { 
System.out.println("Slider changed: " + theJSlider.getValue()); 
} 
} else if (source instanceof JProgressBar) { 
JProgressBar theJProgressBar = (JProgressBar) source; 
System.out.println("ProgressBar changed: " 
+ theJProgressBar.getValue()); 
} else { 
System.out.println("Something changed: " + source); 
} 
} 
}