String filename = args[0];
try {
File file = new File(filename);
FileReader fileReader = new FileReader(file);
BufferedReader reader = new BufferedReader(fileReader);
String line;
int i = 1;
while ((line = reader.readLine()) != null) {
System.out.printf("Line %d: %s%n", i++, line);
}
} catch (Exception e) {
System.err.printf("Unable to open file named '%s': %s",
filename, e.getMessage());
}
