Walk all of JRT with Java NIO FileSystem

JrtDemo.java

package fs;

import java.io.IOException;
import java.net.URI;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Stream;

public class JrtDemo
{
    public static void main(String[] args) throws IOException
    {
        URI jrtRoot = URI.create("jrt:/");
        Map<String,?> env = Map.of();

        try (FileSystem fs = FileSystems.newFileSystem(jrtRoot, env))
        {
            Path root = fs.getPath("/");
            try (Stream<Path> walkStream = Files.walk(root))
            {
                final AtomicInteger i = new AtomicInteger(0);
                walkStream.forEach((path) ->
                {
                    String type = "";
                    if (Files.isDirectory(path))
                        type = "[dir]";
                    System.out.printf("[%d] %s %s%n", i.incrementAndGet(), path.toUri(), type);
                });
            }
        }
    }
}