Java I/O How to - Read file to byte array and save back with java.nio.file.Files

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Question

We would like to know how to read file to byte array and save back with java.nio.file.Files.

Answer

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
//  ww  w . j  ava 2 s.c  om
public class Main {

  public static void main(String[] args) throws IOException {
    Path path = Paths.get("/users.txt");
    byte[] contents = Files.readAllBytes(path);

    Path newPath = Paths.get("/newUsers.txt");

    Files.write(newPath, contents, StandardOpenOption.CREATE);

  }
}

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