Source Code : A demonstration of the ChangeEvents generated by the BoundedRangeModel

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A demonstration of the ChangeEvents generated by the BoundedRangeModel

  
// A demonstration of the ChangeEvents generated by the BoundedRangeModel.

import javax.swing.DefaultBoundedRangeModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class Bounded {
  public Bounded() {
    try {
      DefaultBoundedRangeModel model = new DefaultBoundedRangeModel();
      ChangeListener myListener = new MyChangeListener();
      model.addChangeListener(myListener);

      System.out.println(model.toString());
      System.out.println("Now setting minimum to 50 . . .");
      model.setMinimum(50);
      System.out.println(model.toString());
      System.out.println("Now setting maximum to 40 . . .");
      model.setMaximum(40);
      System.out.println(model.toString());
      System.out.println("Now setting maximum to 50 . . .");
      model.setMaximum(50);
      System.out.println(model.toString());
      System.out.println("Now setting extent to 30 . . .");
      model.setExtent(30);
      System.out.println(model.toString());

      System.out.println("Now setting several properties . . .");
      if (!model.getValueIsAdjusting()) {
        model.setValueIsAdjusting(true);
        System.out.println(model.toString());
        model.setMinimum(0);
        model.setMaximum(100);
        model.setExtent(20);
        model.setValueIsAdjusting(false);
      }
      System.out.println(model.toString());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  class MyChangeListener implements ChangeListener {
    public void stateChanged(ChangeEvent e) {
      System.out.println("A ChangeEvent has been fired!");
    }
  }

  public static void main(String args[]) {
    new Bounded();
  }
}

           
         
    
  

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