Source Code : Slider ChangeListener

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Slider ChangeListener

  
import java.awt.BorderLayout;
import java.awt.Container;

import javax.swing.BoundedRangeModel;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class ChangeSlider {
  public static void main(String args[]) {
    JFrame f = new JFrame("Change Slider");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JSlider aJSlider = new JSlider(JSlider.HORIZONTAL);
    ChangeListener aChangeListener = new BoundedChangeListener();
    BoundedRangeModel model = aJSlider.getModel();
    model.addChangeListener(aChangeListener);
    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);
    }
  }
}

           
         
    
  

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