Java Tutorial/Swing Event/AdjustmentListener

Use Adjustment Events in Swing

   <source lang="java">

import java.awt.BorderLayout; import java.awt.event.AdjustmentEvent; import java.awt.event.AdjustmentListener; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollBar; import javax.swing.SwingConstants; public class Main extends JFrame implements AdjustmentListener {

 JScrollBar bar = new JScrollBar(SwingConstants.HORIZONTAL, 50, 10, 0, 100);
 public Main() {
   setSize(350, 100);
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   bar.addAdjustmentListener(this);
   JPanel pane = new JPanel();
   pane.setLayout(new BorderLayout());
   pane.add(bar, "South");
   setContentPane(pane);
 }
 public static void main(String[] arguments) {
   JFrame frame = new Main();
   frame.setVisible(true);
 }
 public void adjustmentValueChanged(AdjustmentEvent evt) {
   Object source = evt.getSource();
   int newValue = bar.getValue();
   System.out.println(newValue);
   repaint();
 }

}</source>