Tutorial explains how to use JFileChosser Properly [Part 1]

MyWindow.java

/*
 * Tutorial: How to use JFileChooser properly (1)
 * URL: http://cyounes.com/tutorials/how-to-use-jfilechooser-properly
 * @author Cheikh Younes
 */

import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextField;


public class MyWindow extends JFrame {
    
    private JButton btn ;
    private JTextField textField;
    private JFileChooser fc;
    
    public MyWindow() {
        initComponents();
        simpleMethod();
    }
    
    private void initComponents() {
        setSize(300, 60);
        setTitle("My Window");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Container c = getContentPane();
        c.setLayout(new FlowLayout());
        btn = new JButton("Browse");
        btn.setPreferredSize(new Dimension(100, 20));
        c.add(btn);
        textField = new JTextField();
        textField.setPreferredSize(new Dimension(160, 20));
        c.add(textField);
    }
    
    private void simpleMethod() {
        btn.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnBrowseActionPerformed(evt);
            }
        });
    }
    
    private void btnBrowseActionPerformed(java.awt.event.ActionEvent evt) {                                               
        if (fc == null) {
            fc = new JFileChooser(".");
        }

        // Show it.
        int returnVal = fc.showOpenDialog(this);

        // Process the results.
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            textField.setText(fc.getSelectedFile().getPath());
        } else {
            textField.setText("");
        }

        // Reset the file chooser for the next time it's shown.
        fc.setSelectedFile(null);
        
    }  
    public static void main(String[] args) {
        MyWindow window = new MyWindow();
        window.setVisible(true);
    }
}