import java.io.File;
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.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.stream.Stream;

public class TestZip {

    public static void main(String[] args) throws IOException {

        File jarFile = new File("./tesFile.zip");

        Map<String, String> env = new HashMap<>();
        env.put("create", "true");

        URI uri = URI.create("jar:file:" + jarFile.getAbsolutePath());
        
        System.out.println("write: ");
        try (FileSystem fs = FileSystems.newFileSystem(uri, env)) {
            for (int i = 0; i < 100000; i++) {
                Path p = fs.getPath(i + ".txt");
                StringBuilder sb = new StringBuilder();
                sb.append(String.format("file #: %03d\n", i));

                int r = (int) (Math.random() * 100);
                for (int j = 0; j < r; j++) {
                    sb.append(String.format("%03d %020d\n", r, i));
                }
                Files.write(p, sb.toString().getBytes());
            }
        }
        System.out.println("read: ");
        try (FileSystem fs = FileSystems.newFileSystem(uri, env)) {
            for (Path rootDir : fs.getRootDirectories()) {
                Stream<Path> walk = Files.walk(rootDir);
                for (Iterator iterator = walk.iterator(); iterator.hasNext();) {
                    Path p = (Path) iterator.next();
                    if (p.toString().endsWith(".txt")) {
                        System.out.println(p);
                        for (String line : Files.readAllLines(p)) {
                           //System.out.println(line);
                        }
                    }
                }
            }
        }
    }
}