Presented below is a simple example which reads the file (whose name is given as an argument from command prompt) and prints out its contents.
import java.io.*;
public class Reader{
public static void main (String args[]) {
String thisLine;
for (int i=0; i < args.length; i++) {
try {
FileInputStream fin = new FileInputStream(args[i]);
BufferedReader myInput = new BufferedReader
(new InputStreamReader(fin));
while ((thisLine = myInput.readLine()) != null) {
System.out.println(thisLine);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
}