Reading Data From a text file in JAVA

import java.io.*;
import javax.swing.JOptionPane;
public class FileStreamsReadnWrite
{

         public static void main(String[] args) throws Exception
             {

                 FileReader fr = new FileReader("D://IIUI/thetextfile.txt");
                 BufferedReader br = new BufferedReader(fr);
                 String s;
                 while((s = br.readLine()) != null)
                     {
                           JOptionPane.showMessageDialog(null,s);
                     }
        fr.close();    
    }
}