ProcessBuilder参数的哪种编码开发者社区

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public class Abc {
  private static final Path PATH = Paths.get("."); // With maven: ./target/classes
  public static void main(String[] args) throws Exception {
    var string = "hello أحمد";
    var bytes = string.getBytes();
    System.out.println("Original string: " + string);
    System.out.println("Default charset: " + Charset.defaultCharset());
    for (var c : Charset.availableCharsets().values()) {
      var newString = new String(bytes, c);
      var process = new ProcessBuilder().command("java", "-cp",
              PATH.toAbsolutePath().toString(),
              "Def", newString).start();
      process.waitFor();
      var output = asString(process.getInputStream());
      if (output.contains(string)) {
        System.out.println("Found " + c + " " + output);
  private static String asString(InputStream is) throws IOException {
    try (var reader = new BufferedReader(new InputStreamReader(is))) {
      var builder = new StringBuilder();
      String line;
      while ((line = reader.readLine()) != null) {
        if (builder.length() != 0) {
          builder.append(System.lineSeparator());
        builder.append(line);
      return builder.toString();