Number of lines counter

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

public class Launcher {
    static File dir = new File(System.getProperty("user.dir") + "\\Files\\");
    static File log = new File(System.getProperty("user.dir")+"\\structure.txt");
    static int lines = 0;
    static int spc_count = -1;

    static void Process(File aFile) throws FileNotFoundException{
        spc_count += 2;
        String spcs = "";
        for(int i = 0; i < spc_count; i++){
            spcs += " ";
        }
        if(aFile.isFile()){
            echo(spcs + "[FILE] " + aFile.getName());
            countLines(aFile);
        }else if(aFile.isDirectory()){
            echo(spcs + "[DIR] " + aFile.getName());
            File[] listOfFiles = aFile.listFiles();
            if(listOfFiles != null){
                for(int i = 0; i < listOfFiles.length; i++){
                    Process(listOfFiles[i]);
                }
            }else{
                echo(spcs + " [ACCESS DENIED]");
            }
        }
        spc_count -= 2;
    }

    public static void main(String[] args) throws FileNotFoundException{
        Process(dir);
        echo("Total lines: " + lines);
    }

    private static void countLines(File file) throws FileNotFoundException{
        Scanner scanner = new Scanner(file);
        while (scanner.hasNextLine()){
            @SuppressWarnings ("unused")
            String line = scanner.nextLine();
            lines++;
        }
    }

    public static void echo(String str){
        System.out.println(str);
        addToLog(str);
    }

    public static void addToLog(String loge){
        try{
            BufferedWriter out = new BufferedWriter(new FileWriter(log, true));
            out.write(loge+"\r\n");
            out.close();
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}