Tracking changes to a JSlider with a ChangeListener : JSlider « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JSlider

import java.awt.BorderLayout;

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

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 {
      System.out.println("Something changed: " + source);
    }
  }
}

public class TickSliders {
  public static void main(String args[]) {
    JFrame frame = new JFrame("Tick Slider");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JSlider jSliderOne = new JSlider();
    jSliderOne.addChangeListener(new BoundedChangeListener());
    frame.add(jSliderOne, BorderLayout.NORTH);
    frame.setSize(300, 200);
    frame.setVisible(true);
  }
}

14.30.JSlider
	14.30.1.	JSlider Introduction
	14.30.2.	JSlider lets the user graphically select a value by sliding a knob within a bounded interval.
	14.30.3.	Creating a JSlider Component
	14.30.4.	Create a horizontal slider with custom min, max, and value
	14.30.5.	Create a vertical slider with min=0, max=100, value=50
	14.30.6.	Create a vertical slider with custom min, max, and value
	14.30.7.	Listening for Value Changes in a JSlider Component
	14.30.8.	Tracking changes to a JSlider with a ChangeListener
	14.30.9.	Displaying Tick Marks Within a JSlider
	14.30.10.	Snapping the JSlider Thumb into Position
	14.30.11.	Labeling JSlider Positions: use text to mark JSlider
	14.30.12.	Setting ThumbIcon for JSlider
	14.30.13.	JSlider Client Properties: JSlider.isFilled
	14.30.14.	Slider change event
	14.30.15.	Use Slider to control the color R G B value
	14.30.16.	AdjustmentListener and ChangeListener for JSlider
	14.30.17.	Move the slider by a fixed amount: the extent.
	14.30.18.	Get the extent
	14.30.19.	Getting and Setting the Values of a JSlider Component
	14.30.20.	Set major tick marks every 25 units
	14.30.21.	Set minor tick marks every 5 units
	14.30.22.	Set to a spot between tick marks; the value moves to closest tick mark
	14.30.23.	Set the value; the new value will be forced into the bar's range
	14.30.24.	Set the extent
	14.30.25.	Set all the values at once by using the model
	14.30.26.	Make it vertical and move bottom-to-top
	14.30.27.	Make it vertical and move top-to-bottom
	14.30.28.	Make the horizontal slider move right-to-left
	14.30.29.	Create a dynamic icon
	14.30.30.	Hide the track
	14.30.31.	Show tick marks
	14.30.32.	Change the minimum value
	14.30.33.	Change the maximum value
	14.30.34.	Snap to tick marks
	14.30.35.	Constraining JSlider Component Values to Tick Marks
	14.30.36.	Determine if currently snapping to tick marks
	14.30.37.	Determine if currently painting labels
	14.30.38.	A slider with tick marks and labels
	14.30.39.	The slider allows you to use an arbitrary label at any particular major tick mark.
	14.30.40.	Customizing a JSlider Look and Feel