Thread: Reuse same Scanner to read another file

Hi everyone
thanks in advance for patience and taking the time to read my code
I am trying to get one Scanner to read from 2 files i.e.
Read from file1 then count contents make count the size of arr1 (size1), fill arr1 with file1
Reset Scanner and repeat for file2 and arr2
Do I need another scanner?
If I do what is the scanner.reset() for?

Here is my code so far

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;
 
public class FindInArray{
 
	public static void main(String [] args){
 
	int [] arr1 = new int[0];
	int [] arr2 = new int[0];
	int size1 = 0;
	int size2 = 0;
	Scanner sc = new Scanner(System.in);
	System.out.println("Enter the filename");
	String file1 = sc.nextLine();
	System.out.println("Enter another filename");
	String file2 = sc.nextLine();
	try{
		Scanner ns = new Scanner(new File(file1));
		while(ns.hasNextInt()&&ns.nextInt()!= -1){
			size1++;
		}
		ns.reset();
		arr1 = new int[size1];
		System.out.println(size1);
		int x = 0;
		while(x<arr1.length&&ns.nextInt()!= -1){
			arr1[x] = ns.nextInt();
			x++;
		}
		ns.reset();
		x = 0;
		ns = Scanner(new File(file2));
		while(ns.hasNextInt()&&ns.nextInt()!= -1){
			size2++;
		}
		arr2 = new int[size2];
		while(x<arr2.length&&ns.nextInt()!= -1){
			arr2[x] = ns.nextInt();
			x++;
		}
	}
	catch(FileNotFoundException e) {
			System.out.println("That file was not found. Program terminating...");
			e.printStackTrace();
	}