Java by API/javax.swing.event/AdjustmentListener

implements AdjustmentListener

import java.awt.BorderLayout;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import javax.swing.JFrame;
import javax.swing.JScrollBar;
public class MainClass {
  public static void main(String args[]) throws Exception {
    AdjustmentListener adjustmentListener = new AdjustmentListener() {
      public void adjustmentValueChanged(AdjustmentEvent adjustmentEvent) {
        System.out.println("Adjusted: " + adjustmentEvent.getValue());
      }
    };
    JScrollBar oneJScrollBar = new JScrollBar(JScrollBar.HORIZONTAL);
    oneJScrollBar.addAdjustmentListener(adjustmentListener);

    JFrame frame = new JFrame("ScrollBars R Us");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(oneJScrollBar, BorderLayout.NORTH);
    frame.setSize(300, 200);
    frame.setVisible(true);
  }
}