Reading data from a given file

Program:

//In this program we are reading the data from a file.
import java.io.*;
public class filer
{
public static void main(String ar[])
{
try
{
FileReader fr=new FileReader("input.txt");
BufferedReader br=new BufferedReader(fr);
String str=br.readLine();
while(str!=null)
{
System.out.println(str);
str=br.readLine();
}

}catch(Exception e)
{
System.out.println(e);
}
}
}
Output: