Try this:

import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;

public class  JFileChooserExample{

 public static void getFileName(File f){
     System.out.println("File is: "+f.getName());
 }
    public static void main(String[] args)  {
        JPanel panel=new JPanel();
        panel.setLayout(null);
        JButton b=new JButton("Open File");
        b.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
            JFileChooser chooser=new JFileChooser();
            int ret = chooser.showDialog(null, "Open file");
            if (ret == JFileChooser.APPROVE_OPTION) {
            File file = chooser.getSelectedFile();
            getFileName(file);
            }
           }
        });
        b.setBounds(10,10,120,20);
        panel.add(b);
        JFrame f=new JFrame();
        f.add(panel);
        f.setSize(400,200);
        f.setVisible(true);

    }
}

Hi, Thank you, this works fine without any problem. Could you please suggest any good website for java tutorials and also some article/books for good design practices.

Thank you.