Read Internal File Name

Question

I need to read the name of the files contained within a package, for example, read the name file01.txt, as in the image below :

So I can go through the package arquivos without having to name a file for reading.

Answer 1

Can do with listFiles or Files walk. java 8.

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.stream.Stream;

class Teste {
    public static void main(String[] args) {
        final File pasta = new File("C:\\teste");
        listaArquivos(pasta);   
        listaArquivosJava8(pasta);
    }

    public static void listaArquivos(final File pasta) {
        for (final File fileEntry : pasta.listFiles()) {
            if (! fileEntry.isDirectory()) {
                System.out.println(fileEntry.getName());
            }
        }
    }

    public static void listaArquivosJava8(final File pasta) {
        try(Stream<Path> paths = Files.walk(Paths.get(pasta.toURI()))) {
            paths.forEach(filePath -> {
                if (Files.isRegularFile(filePath)) {
                    System.out.println(filePath);
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        } 
    }
}

Source: Read all files in a Folder - Stackoverflow

Answer 2

Try the following:

String path = getClass().getResource("arquivos").getPath();

File[] files = new File(path).listFiles();

for(File file : files){
  System.out.println(file.getName());
}

Recalling that the path will only be recovered correctly as indicated in the code, taking into account that the folder arquivos is part of the project. If it is external, you need to inform the absolute path, as in Reply from @Joe Torres

Answer 3

Look buddy, I’m a little rusty in java, but as far as I can remember, you can list the arches that way:

File folder = new File("c:\pathproprojeto\src\arquivos");
File[] listOfFiles = folder.listFiles();

Answer 4

public static void getImgs(String path){
File file = new File(path);
File[] arquivos = file.listFiles();

for (File arquivo : arquivos) {
    System.out.println(arquivo);
}
}