TextSlide.java

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.GridLayout;
import java.text.NumberFormat;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.JFormattedTextField;
import javax.swing.JPanel;
import javax.swing.JSlider;

public class TextSlide extends JPanel {
	private final JSlider slider;
	private final JFormattedTextField number;
	private final double scale;

	public TextSlide(double min, double max, double init, int precision) {
		super();
		scale = Math.pow(10.0, (double)precision);
		slider = new JSlider((int)(min * scale), (int)(max * scale), (int)(init * scale));
		number = new JFormattedTextField(NumberFormat.getNumberInstance());
		number.setValue(init);

		setLayout(new GridLayout(1, 2));

		slider.addChangeListener(new ChangeListener() {
			@Override
			public void stateChanged(ChangeEvent e) {
				number.setValue(((Number)slider.getValue()).doubleValue() / scale);
				fireStateChanged();
			}
		});

		number.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				slider.setValue((int)(((Number)number.getValue()).doubleValue() * scale));
				fireStateChanged();
			}
		});

		add(number);
		add(slider);
	}

	public Double getValue() {
		return slider.getValue() / scale;
	}

	public void setValue(Double val) {
		number.setValue(val);
		slider.setValue((int)(val * scale));
	}

	public void addChangeListener(ChangeListener listener) {
		listenerList.add(ChangeListener.class, listener);
	}

	public void removeChangeListener(ChangeListener listener) {
		listenerList.remove(ChangeListener.class, listener);
	}

	protected void fireStateChanged() {
		ChangeListener[] listeners = listenerList.getListeners(ChangeListener.class);
		if(listeners != null && listeners.length > 0) {
			ChangeEvent e = new ChangeEvent(this);
			for(ChangeListener listener : listeners) {
				listener.stateChanged(e);
			}
		}
	}
}