import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.util.Arrays;
import javax.swing.JFileChooser;
public class Main {
public static void main(String[] argv) {
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 oldFile = (File) evt.getOldValue();
File newFile = (File) evt.getNewValue();
System.out.println(oldFile);
System.out.println(newFile);
System.out.println(chooser.getSelectedFile());
} else if (JFileChooser.SELECTED_FILES_CHANGED_PROPERTY.equals(evt.getPropertyName())) {
JFileChooser chooser = (JFileChooser) evt.getSource();
File[] oldFiles = (File[]) evt.getOldValue();
File[] newFiles = (File[]) evt.getNewValue();
Arrays.toString(oldFiles);
Arrays.toString(newFiles);
File[] files = chooser.getSelectedFiles();
Arrays.toString(files);
}
}
});
chooser.setVisible(true);
}
}