Java: read a text file line by line

This class reads a text file line by line and echos the contents to standard out.

Here we have used BufferedReader to do this.

import java.io.*;

public static String readFile(String fileName)
// nested initialization,         
// or in design pattern jargon, decorate FileInputStream with        
// BufferedInputStream.        
BufferedReader in = new BufferedReader(new FileReader(fileName));
    try {
            // read file line by line
            String line = in.readLine();
            while (line != null) {
                printLine(line);
                line = in.readLine();
            }
        }
        finally {
      // always close input stream
            in.close();
        }
    }
    private static void printLine(String line) {
        System.out.println(line);
    }