Help with displaying output from a text file

package edu.nyt3619.file;
 
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
 
public class StudentGrade {
 
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
         
        try {
 
            // Open the file that is the first
 
            // command line parameter
 
            // checks where the path is going ??
 
            System.out.println(System.getProperty("user.dir"));
 
            FileInputStream fstream = new FileInputStream("StudentGrades.txt");
 
            // Get the object of DataInputStream
 
            DataInputStream in = new DataInputStream(fstream);
 
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
 
            String strLine;
 
            // Read File Line By Line
 
            while ((strLine = br.readLine()) != null) {
 
                // Print the content on the console
 
                System.out.println(strLine);
 
            }
 
            // Close the input stream
 
            in.close();
 
        } catch (Exception e) {// Catch exception if any
 
            System.err.println("Error: " + e.getMessage());
 
        }
 
    }
 }