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I can't thank you enough Kewish. I need to start using the oracle docs more. VERY Helpful.


Final answer:




import java.io.*;
import java.util.Scanner;

import java.io.*;
import java.util.Scanner;

public class Chapter13 {

public static void main(String[] args) {


File object = new File(args[0]);
int count =...

Thank you.. I guess I was searching incorrectly. And I really thought I needed DataInputStream no matter what

Anyway, I created a data.txt so that code would run, and nothing happened when I ran...

Scanner sc = new Scanner(new File("test.txt"));
DataInputStream binIn = new DataInputStream(new FileInputStream(args[0]));
File object = new File(args[0]);

An array args index 0? Sorry. I am just a beginner

args[0] is what you enter on the command line?

File takes a string in the constructor?


the text file is passed as args[0]

InputStream? Im reading through the whole Scanner class now

Thank you. Still trying to figure it out.

to make a new file I would use
Scanner sc = new Scanner(new File("myNumbers")); , but I thought I am supposed to specify the file in the command line?

Here is the problem I am trying to solve:


Write a program that determines and displays number of lines in a file that you specify on the command line. Example run:

java YourClass test.txt
12...