Java Swing Tutorial - Java AdjustmentEvent .getValueIsAdjusting ()








Syntax

AdjustmentEvent.getValueIsAdjusting() has the following syntax.

public boolean getValueIsAdjusting()

Example

In the following code shows how to use AdjustmentEvent.getValueIsAdjusting() method.

/* www. j av  a2  s .  c  om*/
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;

import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class Main {
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    Container contentPane = frame.getContentPane();
    JTextArea b = new JTextArea();
    b.setPreferredSize(new Dimension(600,600));
    JScrollPane pane = new JScrollPane(b);
    AdjustmentListener hListener = new AdjustmentListener() {
      public void adjustmentValueChanged(AdjustmentEvent e) {
        System.out.println("Horizontal: ");
        dumpInfo(e);
      }
    };
    JScrollBar hBar = pane.getHorizontalScrollBar();
    hBar.addAdjustmentListener(hListener);
    AdjustmentListener vListener = new AdjustmentListener() {
      public void adjustmentValueChanged(AdjustmentEvent e) {
        System.out.println("Vertical: ");
        dumpInfo(e);
      }
    };
    JScrollBar vBar = pane.getVerticalScrollBar();
    vBar.addAdjustmentListener(vListener);
    contentPane.add(pane, BorderLayout.CENTER);
    frame.setSize(300, 200);
    frame.setVisible(true);
  }

  private static void dumpInfo(AdjustmentEvent e) {
    System.out.println("getValueIsAdjusting: " + e.getValueIsAdjusting());
  }
}