The javax.swing.JFileChooser class
is used to create file choosers for selecting files or directories
to open or save.
The sample code below uses JFileChooser in the Open button action listener.

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// File : filechooser/CountWords.java
// Purpose: Counts words in file.
// Illustrates menus, JFileChooser, Scanner..
// Author : Fred Swartz
// Date : 2005-02-23, 2005-12-02
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
//////////////////////////////////////////////////////// CountWords
public class CountWords extends JFrame {
//... Instance variables
JTextField m_fileNameTF = new JTextField(15);
JTextField m_wordCountTF = new JTextField(4);
JFileChooser m_fileChooser = new JFileChooser();
//================================================== constructor
CountWords() {
m_fileNameTF.setEditable(false);
m_wordCountTF.setEditable(false);
JButton openButton = new JButton("Open");
//... Add listeners
openButton.addActionListener(new OpenAction());
//... Create contant pane, layout components
JPanel content = new JPanel( |