JFileChooser.SELECTED_FILE_CHANGED_PROPERTY has the following syntax.
public static final String SELECTED_FILE_CHANGED_PROPERTY
In the following code shows how to use JFileChooser.SELECTED_FILE_CHANGED_PROPERTY field.
/*from www . j a va 2 s .c o m*/ import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.File; import javax.swing.JFileChooser; public class Main { public static void main(String[] argv) throws Exception { final JFileChooser chooser = new JFileChooser(); chooser.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent evt) { if (JFileChooser.SELECTED_FILE_CHANGED_PROPERTY.equals(evt.getPropertyName())) { JFileChooser chooser = (JFileChooser) evt.getSource(); File oldDir = (File) evt.getOldValue(); File newDir = (File) evt.getNewValue(); File curDir = chooser.getCurrentDirectory(); } } }); } }