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>