Listening for Changes to the Selected File in a JFileChooser Dialog : JFileChooser « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JFileChooser

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);
    
  }
}

14.77.JFileChooser
	14.77.1.	JFileChooser
	14.77.2.	JFileChooser is a standard dialog for selecting a file from the file system.
	14.77.3.	Getting and Setting the Selected File of a JFileChooser Dialog
	14.77.4.	Getting and Setting the Current Directory of a JFileChooser Dialog
	14.77.5.	Determining If the Approve or Cancel Button Was Clicked in a JFileChooser Dialog
	14.77.6.	Displaying Only Directories in a File Chooser Dialog
	14.77.7.	Creating a JFileChooser Dialog
	14.77.8.	Select a directory with a JFileChooser
	14.77.9.	Disable the JFileChooser 'New folder' button
	14.77.10.	Listening for Approve and Cancel Events in a JFileChooser Dialog
	14.77.11.	Using JFileChooser
	14.77.12.	Working with File Filters
	14.77.13.	To enable the display of hidden files
	14.77.14.	The JFileChooser supports three selection modes: files only, directories only, and files and directories
	14.77.15.	Adding Accessory Panels
	14.77.16.	Custom FileView for Some Java-Related File Types
	14.77.17.	Using a JFileChooser in Your JFrame
	14.77.18.	ActionListener for JFileChooser in Your JFrame
	14.77.19.	JFileChooser Selection Option: JFileChooser.APPROVE_OPTION, JFileChooser.CANCEL_OPTION
	14.77.20.	Adding an ActionListener to a JFileChooser to listen for selection of the approval or cancel actions.
	14.77.21.	Listening for Changes to the Selected File in a JFileChooser Dialog
	14.77.22.	Getting the File-Type Icon of a File
	14.77.23.	Getting the Large File-Type Icon of a File
	14.77.24.	Localize a JFileChooser
	14.77.25.	Determining If a File Is Hidden
	14.77.26.	Showing Hidden Files in a JFileChooser Dialog
	14.77.27.	Changing the Text of the Approve Button in a JFileChooser Dialog
	14.77.28.	Enabling Multiple Selections in a JFileChooser Dialog
	14.77.29.	Adding a Filter to a File Chooser Dialog
	14.77.30.	A convenience implementation of FileFilter that filters out all files except for those type extensions that it knows about.
	14.77.31.	Customizing a JFileChooser Look and Feel
	14.77.32.	Get Directory Choice
	14.77.33.	Get File Choice