Simple command line file read with buffer reader

Main.java

package com.company;

import java.io.BufferedReader;
import java.nio.file.Files;
import java.nio.file.Paths;

public class Main {

    public static void main(String[] args) {
        if(args.length == 0) {
            showUsage();
            return;
        }

        String filename = args[0];
        if(!Files.exists(Paths.get(filename))) {
            System.out.println("\n File not found: " + filename);
            return;
        }
        showFileLines(filename);
    }

    private static void showFileLines(String filename) {
        System.out.println();

        try(BufferedReader reader = Files.newBufferedReader(Paths.get(filename))) {
            String line = null;
            while((line = reader.readLine()) != null)
                System.out.println(line);
        } catch(Exception ex) {
            System.out.println(ex.getClass().getSimpleName() + " - " + ex.getMessage());
        }
    }

    private static void showUsage() {
        System.out.println();
        System.out.println("Please provide the filename to process on the command line");
    }

}