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Minimum difference between numbers in a file (Beginner)

I'm learning Java and I created a simple solution for the following problem:

Given a file [filename].txt such that each line has the format string, double, find the minimum possible difference between any two values and identify if it is less than an arbitrary value mindDist

I am looking on advice on if there are any other possible errors / exceptions I may have missed, in addition to any way of increasing the efficiency / simplicity of my code. Thank you.

This is my solution:

package com.company;

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

public class Main {
    public static void main(String[] args) { try {
        Scanner sc = new Scanner(System.in);
        System.out.print("Please enter the name of the input file: ");
        Scanner inFile = new Scanner(new File(sc.nextLine()));
        sc.close();

        List<Double> l = new ArrayList<>();
        while (inFile.hasNextLine()) {
            String[] parts = inFile.nextLine().split(",");
            l.add(Double.parseDouble(parts[1]));
        }

        Collections.sort(l);
        double minDist = 5;
        double diff;
        double minDiff = Double.MAX_VALUE;

        for (int i = 1; i < l.size(); i++) {
            diff = l.get(i) - l.get(i - 1);
            if (diff < minDiff) minDiff = diff;
        }

        if (minDiff < minDist) System.out.println("The satellites are not in safe orbits.");
        else System.out.println("The satellites are in safe orbits.");
        if (l.size()!=1) System.out.println("The minimum distance between orbits (km): " + minDiff);
        inFile.close();

        } catch (NumberFormatException | FileNotFoundException | ArrayIndexOutOfBoundsException e) {
            System.err.println(e);
        }
    }
}