Java Code Examples for java.time.Instant#toEpochMilli()

@LiteralParameters("p")
@SqlType("timestamp(p) with time zone")
public static long shortTimestamp(
        @LiteralParameter("p") long precision,
        ConnectorSession session,
        @SqlNullable @SqlType("timestamp(p) with time zone") Long dummy) // need a dummy value since the type inferencer can't bind type arguments exclusively from return type
{
    Instant start = session.getStart();

    long epochMillis = start.toEpochMilli();

    if (precision < MAX_SHORT_PRECISION) {
        epochMillis = round(epochMillis, (int) (MAX_SHORT_PRECISION - precision));
    }
    else {
        long nanosOfMilli = start.getNano() % NANOSECONDS_PER_MILLISECOND;
        if (roundToNearest(nanosOfMilli, NANOSECONDS_PER_MILLISECOND) == NANOSECONDS_PER_MILLISECOND) {
            epochMillis++;
        }
    }

    return packDateTimeWithZone(epochMillis, session.getTimeZoneKey());
}
 

@Override
public void removeMessages(Instant olderThan) {
    long epochMillis = olderThan.toEpochMilli();
    int toIndex = -1;

    for(int i = 0; i < messages.size(); i++) {
        FileMessage message = messages.get(i);

        if(message.getLastModified() < epochMillis || message.getTimestamp().getTime() < epochMillis) {
            toIndex++;
            continue;
        }

        break;
    }

    messages.subList(0, toIndex + 1).clear();
}
 

@Test
public void testHTTPGetConnectionTimeOut() throws Exception{
    Task task = new Task();
    Input input = new Input();
    Instant start  = Instant.now();
    input.setConnectionTimeOut(110);
    input.setMethod("GET");
    input.setUri("http://10.255.14.15");
    task.getInputData().put(HttpTask.REQUEST_PARAMETER_NAME, input);
    task.setStatus(Status.SCHEDULED);
    task.setScheduledTime(0);
    httpTask.start(workflow,task,workflowExecutor);
    Instant end  = Instant.now();
    long diff = end.toEpochMilli()-start.toEpochMilli();
    Assert.assertEquals(task.getStatus(),Status.FAILED);
    Assert.assertTrue(diff >= 110l);
}
 

@Test
public void instant() throws IOException {
  Instant now = Instant.now();
  long epoch = now.toEpochMilli();

  TypeAdapter<Instant> adapter = gson.getAdapter(Instant.class);

  // read
  Instant date = adapter.read(Jsons.readerAt(new BsonDateTime(epoch)));
  check(date).is(now);

  // write
  BsonValue bson = writeAndReadBson(now);
  check(bson.getBsonType()).is(BsonType.DATE_TIME);
  check(Instant.ofEpochMilli(bson.asDateTime().getValue())).is(now);
}
 

@Test
void testIsNotCool() {
    Stack stack = UserSyncTestUtils.createStack();
    UserSyncStatus userSyncStatus = UserSyncTestUtils.createUserSyncStatus(stack);
    Instant cooldownExpiration = Instant.now();
    long lastStartTime = cooldownExpiration.toEpochMilli() + 1L;
    Operation lastRequestedOperation = new Operation();
    lastRequestedOperation.setStartTime(lastStartTime);
    userSyncStatus.setLastStartedFullSync(lastRequestedOperation);

    assertFalse(underTest.isCooldownExpired(userSyncStatus, cooldownExpiration));
}
 

private static Long computeLastAffectingPenalty(
        Instant submissionTime,
        Optional<Instant> contestantStartTime,
        Instant contestBeginTime) {

    return submissionTime.toEpochMilli() - contestantStartTime.orElse(contestBeginTime).toEpochMilli();
}
 

private AccountAuth createAccountAuth(Account account) {
  Instant now = Instant.now(clock);
  Instant expireTime = now.plus(ACCOUNT_TOKEN_EXPIRE);
  String accessToken = new AccountAccessToken(account.getAccountId(),
      account.getPasswordHash(),
      account.getAuthorities()).encode(expireTime, accountSecret);
  return new AccountAuth(account.getUsername(),
      accessToken,
      expireTime.toEpochMilli(),
      now.toEpochMilli());
}
 

/**
 * Updates this target's {@link #syncTimeMillis}. Returns this same {@link TargetIdeInfo} instance
 * if the sync time is unchanged.
 */
public TargetIdeInfo updateSyncTime(Instant syncTime) {
  long syncTimeMillis = syncTime.toEpochMilli();
  if (Objects.equals(syncTimeMillis, this.syncTimeMillis)) {
    return this;
  }
  return new TargetIdeInfo(
      key,
      kind,
      buildFile,
      dependencies,
      tags,
      sources,
      cIdeInfo,
      cToolchainIdeInfo,
      javaIdeInfo,
      androidIdeInfo,
      androidSdkIdeInfo,
      androidAarIdeInfo,
      androidInstrumentationInfo,
      pyIdeInfo,
      goIdeInfo,
      jsIdeInfo,
      tsIdeInfo,
      dartIdeInfo,
      testIdeInfo,
      javaToolchainIdeInfo,
      kotlinToolchainIdeInfo,
      syncTimeMillis);
}
 

public void test_instant() {
    Clock system = Clock.systemUTC();
    assertEquals(system.getZone(), ZoneOffset.UTC);
    for (int i = 0; i < 10000; i++) {
        // assume can eventually get these within 10 milliseconds
        Instant instant = system.instant();
        long systemMillis = System.currentTimeMillis();
        if (systemMillis - instant.toEpochMilli() < 10) {
            return;  // success
        }
    }
    fail();
}
 

@Test
public void testConvert_utilDate() {
    Instant now = Instant.now();
    LocalDate localDate = now.atZone(ZoneId.systemDefault()).toLocalDate();
    Date date = new Date(now.toEpochMilli());
    assertEquals(localDate, CONVERTER.convert(date));
}
 

public void test_instant() {
    Clock system = Clock.systemUTC();
    assertEquals(system.getZone(), ZoneOffset.UTC);
    for (int i = 0; i < 10000; i++) {
        // assume can eventually get these within 10 milliseconds
        Instant instant = system.instant();
        long systemMillis = System.currentTimeMillis();
        if (systemMillis - instant.toEpochMilli() < 10) {
            return;  // success
        }
    }
    fail();
}
 

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

        int N = 10000;
        long t1970 = new java.util.Date(70, 0, 01).getTime();
        Random r = new Random();
        for (int i = 0; i < N; i++) {
            int days  = r.nextInt(50) * 365 + r.nextInt(365);
            long secs = t1970 + days * 86400 + r.nextInt(86400);
            int nanos = r.nextInt(NANOS_PER_SECOND);
            int nanos_ms = nanos / 1000000 * 1000000; // millis precision
            long millis = secs * 1000 + r.nextInt(1000);
            LocalDateTime ldt = LocalDateTime.ofEpochSecond(secs, nanos, ZoneOffset.UTC);
            LocalDateTime ldt_ms = LocalDateTime.ofEpochSecond(secs, nanos_ms, ZoneOffset.UTC);
            Instant inst = Instant.ofEpochSecond(secs, nanos);
            Instant inst_ms = Instant.ofEpochSecond(secs, nanos_ms);
            ///////////// java.util.Date /////////////////////////
            Date jud = new java.util.Date(millis);
            Instant inst0 = jud.toInstant();
            if (jud.getTime() != inst0.toEpochMilli() ||
                !jud.equals(Date.from(inst0))) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: j.u.d -> instant -> j.u.d");
            }
            // roundtrip only with millis precision
            Date jud0 = Date.from(inst_ms);
            if (jud0.getTime() != inst_ms.toEpochMilli() ||
                !inst_ms.equals(jud0.toInstant())) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: instant -> j.u.d -> instant");
            }
            //////////// java.util.GregorianCalendar /////////////
            GregorianCalendar cal = new GregorianCalendar();
            // non-roundtrip of tz name between j.u.tz and j.t.zid
            cal.setTimeZone(TimeZone.getTimeZone(ZoneId.systemDefault()));
            cal.setGregorianChange(new java.util.Date(Long.MIN_VALUE));
            cal.setFirstDayOfWeek(Calendar.MONDAY);
            cal.setMinimalDaysInFirstWeek(4);
            cal.setTimeInMillis(millis);
            ZonedDateTime zdt0 = cal.toZonedDateTime();
            if (cal.getTimeInMillis() != zdt0.toInstant().toEpochMilli() ||
                !cal.equals(GregorianCalendar.from(zdt0))) {
                System.out.println("cal:" + cal);
                System.out.println("zdt:" + zdt0);
                System.out.println("calNew:" + GregorianCalendar.from(zdt0));
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: gcal -> zdt -> gcal");
            }
            inst0 = cal.toInstant();
            if (cal.getTimeInMillis() != inst0.toEpochMilli()) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: gcal -> zdt");
            }
            ZonedDateTime zdt = ZonedDateTime.of(ldt_ms, ZoneId.systemDefault());
            GregorianCalendar cal0 = GregorianCalendar.from(zdt);
            if (zdt.toInstant().toEpochMilli() != cal0.getTimeInMillis() ||
                !zdt.equals(GregorianCalendar.from(zdt).toZonedDateTime())) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: zdt -> gcal -> zdt");
            }
        }

        ///////////// java.util.TimeZone /////////////////////////
        for (String zidStr : TimeZone.getAvailableIDs()) {
            // TBD: tzdt intergration
            if (zidStr.startsWith("SystemV") ||
                zidStr.contains("Riyadh8") ||
                zidStr.equals("US/Pacific-New") ||
                zidStr.equals("EST") ||
                zidStr.equals("HST") ||
                zidStr.equals("MST")) {
                continue;
            }
            ZoneId zid = ZoneId.of(zidStr, ZoneId.SHORT_IDS);
            if (!zid.equals(TimeZone.getTimeZone(zid).toZoneId())) {
                throw new RuntimeException("FAILED: zid -> tz -> zid :" + zidStr);
            }
            TimeZone tz = TimeZone.getTimeZone(zidStr);
            // no round-trip for alias and "GMT"
            if (!tz.equals(TimeZone.getTimeZone(tz.toZoneId())) &&
                !ZoneId.SHORT_IDS.containsKey(zidStr) &&
                !zidStr.startsWith("GMT")) {
                throw new RuntimeException("FAILED: tz -> zid -> tz :" + zidStr);
            }
        }
        System.out.println("Passed!");
    }
 

public static void main(String[] args) throws Throwable {
    int N = 10000;
    long t1970 = new java.util.Date(70, 0, 01).getTime();
    Random r = new Random();
    for (int i = 0; i < N; i++) {
        int days  = r.nextInt(50) * 365 + r.nextInt(365);
        long secs = t1970 + days * 86400 + r.nextInt(86400);
        int nanos = r.nextInt(NANOS_PER_SECOND);
        int nanos_ms = nanos / 1000000 * 1000000; // millis precision
        long millis = secs * 1000 + r.nextInt(1000);

        LocalDateTime ldt = LocalDateTime.ofEpochSecond(secs, nanos, ZoneOffset.UTC);
        LocalDateTime ldt_ms = LocalDateTime.ofEpochSecond(secs, nanos_ms, ZoneOffset.UTC);
        Instant inst = Instant.ofEpochSecond(secs, nanos);
        Instant inst_ms = Instant.ofEpochSecond(secs, nanos_ms);
        //System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);

        /////////// Timestamp ////////////////////////////////
        Timestamp ta = new Timestamp(millis);
        ta.setNanos(nanos);
        if (!isEqual(ta.toLocalDateTime(), ta)) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            print(ta.toLocalDateTime(), ta);
            throw new RuntimeException("FAILED: j.s.ts -> ldt");
        }
        if (!isEqual(ldt, Timestamp.valueOf(ldt))) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            print(ldt, Timestamp.valueOf(ldt));
            throw new RuntimeException("FAILED: ldt -> j.s.ts");
        }
        Instant inst0 = ta.toInstant();
        if (ta.getTime() != inst0.toEpochMilli() ||
            ta.getNanos() != inst0.getNano() ||
            !ta.equals(Timestamp.from(inst0))) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            throw new RuntimeException("FAILED: j.s.ts -> instant -> j.s.ts");
        }
        inst = Instant.ofEpochSecond(secs, nanos);
        Timestamp ta0 = Timestamp.from(inst);
        if (ta0.getTime() != inst.toEpochMilli() ||
            ta0.getNanos() != inst.getNano() ||
            !inst.equals(ta0.toInstant())) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            throw new RuntimeException("FAILED: instant -> timestamp -> instant");
        }

        ////////// java.sql.Date /////////////////////////////
        // j.s.d/t uses j.u.d.equals() !!!!!!!!
        java.sql.Date jsd = new java.sql.Date(millis);
        if (!isEqual(jsd.toLocalDate(), jsd)) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            print(jsd.toLocalDate(), jsd);
            throw new RuntimeException("FAILED: j.s.d -> ld");
        }
        LocalDate ld = ldt.toLocalDate();
        if (!isEqual(ld, java.sql.Date.valueOf(ld))) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            print(ld, java.sql.Date.valueOf(ld));
            throw new RuntimeException("FAILED: ld -> j.s.d");
        }
        ////////// java.sql.Time /////////////////////////////
        java.sql.Time jst = new java.sql.Time(millis);
        if (!isEqual(jst.toLocalTime(), jst)) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            print(jst.toLocalTime(), jst);
            throw new RuntimeException("FAILED: j.s.t -> lt");
        }
        // millis precision
        LocalTime lt = ldt_ms.toLocalTime();
        if (!isEqual(lt, java.sql.Time.valueOf(lt))) {
            System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
            print(lt, java.sql.Time.valueOf(lt));
            throw new RuntimeException("FAILED: lt -> j.s.t");
        }
    }
    System.out.println("Passed!");
}
 

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

        int N = 10000;
        long t1970 = new java.util.Date(70, 0, 01).getTime();
        Random r = new Random();
        for (int i = 0; i < N; i++) {
            int days  = r.nextInt(50) * 365 + r.nextInt(365);
            long secs = t1970 + days * 86400 + r.nextInt(86400);
            int nanos = r.nextInt(NANOS_PER_SECOND);
            int nanos_ms = nanos / 1000000 * 1000000; // millis precision
            long millis = secs * 1000 + r.nextInt(1000);
            LocalDateTime ldt = LocalDateTime.ofEpochSecond(secs, nanos, ZoneOffset.UTC);
            LocalDateTime ldt_ms = LocalDateTime.ofEpochSecond(secs, nanos_ms, ZoneOffset.UTC);
            Instant inst = Instant.ofEpochSecond(secs, nanos);
            Instant inst_ms = Instant.ofEpochSecond(secs, nanos_ms);
            ///////////// java.util.Date /////////////////////////
            Date jud = new java.util.Date(millis);
            Instant inst0 = jud.toInstant();
            if (jud.getTime() != inst0.toEpochMilli() ||
                !jud.equals(Date.from(inst0))) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: j.u.d -> instant -> j.u.d");
            }
            // roundtrip only with millis precision
            Date jud0 = Date.from(inst_ms);
            if (jud0.getTime() != inst_ms.toEpochMilli() ||
                !inst_ms.equals(jud0.toInstant())) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: instant -> j.u.d -> instant");
            }
            //////////// java.util.GregorianCalendar /////////////
            GregorianCalendar cal = new GregorianCalendar();
            // non-roundtrip of tz name between j.u.tz and j.t.zid
            cal.setTimeZone(TimeZone.getTimeZone(ZoneId.systemDefault()));
            cal.setGregorianChange(new java.util.Date(Long.MIN_VALUE));
            cal.setFirstDayOfWeek(Calendar.MONDAY);
            cal.setMinimalDaysInFirstWeek(4);
            cal.setTimeInMillis(millis);
            ZonedDateTime zdt0 = cal.toZonedDateTime();
            if (cal.getTimeInMillis() != zdt0.toInstant().toEpochMilli() ||
                !cal.equals(GregorianCalendar.from(zdt0))) {
                System.out.println("cal:" + cal);
                System.out.println("zdt:" + zdt0);
                System.out.println("calNew:" + GregorianCalendar.from(zdt0));
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: gcal -> zdt -> gcal");
            }
            inst0 = cal.toInstant();
            if (cal.getTimeInMillis() != inst0.toEpochMilli()) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: gcal -> zdt");
            }
            ZonedDateTime zdt = ZonedDateTime.of(ldt_ms, ZoneId.systemDefault());
            GregorianCalendar cal0 = GregorianCalendar.from(zdt);
            if (zdt.toInstant().toEpochMilli() != cal0.getTimeInMillis() ||
                !zdt.equals(GregorianCalendar.from(zdt).toZonedDateTime())) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: zdt -> gcal -> zdt");
            }
        }

        ///////////// java.util.TimeZone /////////////////////////
        for (String zidStr : TimeZone.getAvailableIDs()) {
            // TBD: tzdt intergration
            if (zidStr.startsWith("SystemV") ||
                zidStr.contains("Riyadh8") ||
                zidStr.equals("US/Pacific-New") ||
                zidStr.equals("EST") ||
                zidStr.equals("HST") ||
                zidStr.equals("MST")) {
                continue;
            }
            ZoneId zid = ZoneId.of(zidStr, ZoneId.SHORT_IDS);
            if (!zid.equals(TimeZone.getTimeZone(zid).toZoneId())) {
                throw new RuntimeException("FAILED: zid -> tz -> zid :" + zidStr);
            }
            TimeZone tz = TimeZone.getTimeZone(zidStr);
            // no round-trip for alias and "GMT"
            if (!tz.equals(TimeZone.getTimeZone(tz.toZoneId())) &&
                !ZoneId.SHORT_IDS.containsKey(zidStr) &&
                !zidStr.startsWith("GMT")) {
                throw new RuntimeException("FAILED: tz -> zid -> tz :" + zidStr);
            }
        }
        System.out.println("Passed!");
    }
 

private static void testMatching(XMLFormatter formatter,
        LogRecord record,  Instant instant, long expectedNanos,
        boolean useInstant) {

    ZonedDateTime zdt = ZonedDateTime.ofInstant(instant, ZoneId.systemDefault());
    int zdtNanos = zdt.getNano();
    assertEquals(expectedNanos, zdtNanos, "ZonedDateTime.getNano()");

    String str = formatter.format(record);

    String match = "."+expectedNanos;
    if (str.contains(match) != useInstant) {
        throw new RuntimeException(formatter.getClass().getSimpleName()
                + ".format()"
                + " string does not contain expected nanos: "
                + "\n\texpected match for: '" + match + "'"
                + "\n\tin: \n" + str);
    }
    System.out.println("Found expected match for '"+match+"' in \n"+str);

    match = "<millis>"+instant.toEpochMilli()+"</millis>";
    if (!str.contains(match)) {
        throw new RuntimeException(formatter.getClass().getSimpleName()
                + ".format()"
                + " string does not contain expected millis: "
                + "\n\texpected match for: '" + match + "'"
                + "\n\tin: \n" + str);
    }
    System.out.println("Found expected match for '"+match+"' in \n"+str);

    match = "<nanos>";
    if (str.contains(match) != useInstant) {
        throw new RuntimeException(formatter.getClass().getSimpleName()
                + ".format()"
                + " string "
                + (useInstant
                        ? "does not contain expected nanos: "
                        : "contains unexpected nanos: ")
                + "\n\t" + (useInstant ? "expected" : "unexpected")
                + " match for: '" + match + "'"
                + "\n\tin: \n" + str);
    }
    match = "<nanos>"+getNanoAdjustment(record)+"</nanos>";
    if (str.contains(match) != useInstant) {
        throw new RuntimeException(formatter.getClass().getSimpleName()
                + ".format()"
                + " string "
                + (useInstant
                        ? "does not contain expected nanos: "
                        : "contains unexpected nanos: ")
                + "\n\t" + (useInstant ? "expected" : "unexpected")
                + " match for: '" + match + "'"
                + "\n\tin: \n" + str);
    }
    if (useInstant) {
        System.out.println("Found expected match for '"+match+"' in \n"+str);
    } else {
        System.out.println("As expected '"+match+"' is not present in \n"+str);
    }

    match = useInstant ? DateTimeFormatter.ISO_INSTANT.format(instant)
            : zdt.truncatedTo(ChronoUnit.SECONDS)
                    .format(DateTimeFormatter.ISO_LOCAL_DATE_TIME);
    match = "<date>"+match+"</date>";
    if (!str.contains(match)) {
        throw new RuntimeException(formatter.getClass().getSimpleName()
                + ".format()"
                + " string does not contain expected date: "
                + "\n\texpected match for: '" + match + "'"
                + "\n\tin: \n" + str);
    }
    System.out.println("Found expected match for '"+match+"' in \n"+str);

}
 

@Override
public final long getCode(Instant value) {
    return value == null ? Long.MIN_VALUE : value.toEpochMilli();
}
 

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

        int N = 10000;
        long t1970 = new java.util.Date(70, 0, 01).getTime();
        Random r = new Random();
        for (int i = 0; i < N; i++) {
            int days  = r.nextInt(50) * 365 + r.nextInt(365);
            long secs = t1970 + days * 86400 + r.nextInt(86400);
            int nanos = r.nextInt(NANOS_PER_SECOND);
            int nanos_ms = nanos / 1000000 * 1000000; // millis precision
            long millis = secs * 1000 + r.nextInt(1000);
            LocalDateTime ldt = LocalDateTime.ofEpochSecond(secs, nanos, ZoneOffset.UTC);
            LocalDateTime ldt_ms = LocalDateTime.ofEpochSecond(secs, nanos_ms, ZoneOffset.UTC);
            Instant inst = Instant.ofEpochSecond(secs, nanos);
            Instant inst_ms = Instant.ofEpochSecond(secs, nanos_ms);
            ///////////// java.util.Date /////////////////////////
            Date jud = new java.util.Date(millis);
            Instant inst0 = jud.toInstant();
            if (jud.getTime() != inst0.toEpochMilli() ||
                !jud.equals(Date.from(inst0))) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: j.u.d -> instant -> j.u.d");
            }
            // roundtrip only with millis precision
            Date jud0 = Date.from(inst_ms);
            if (jud0.getTime() != inst_ms.toEpochMilli() ||
                !inst_ms.equals(jud0.toInstant())) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: instant -> j.u.d -> instant");
            }
            //////////// java.util.GregorianCalendar /////////////
            GregorianCalendar cal = new GregorianCalendar();
            // non-roundtrip of tz name between j.u.tz and j.t.zid
            cal.setTimeZone(TimeZone.getTimeZone(ZoneId.systemDefault()));
            cal.setGregorianChange(new java.util.Date(Long.MIN_VALUE));
            cal.setFirstDayOfWeek(Calendar.MONDAY);
            cal.setMinimalDaysInFirstWeek(4);
            cal.setTimeInMillis(millis);
            ZonedDateTime zdt0 = cal.toZonedDateTime();
            if (cal.getTimeInMillis() != zdt0.toInstant().toEpochMilli() ||
                !cal.equals(GregorianCalendar.from(zdt0))) {
                System.out.println("cal:" + cal);
                System.out.println("zdt:" + zdt0);
                System.out.println("calNew:" + GregorianCalendar.from(zdt0));
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: gcal -> zdt -> gcal");
            }
            inst0 = cal.toInstant();
            if (cal.getTimeInMillis() != inst0.toEpochMilli()) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: gcal -> zdt");
            }
            ZonedDateTime zdt = ZonedDateTime.of(ldt_ms, ZoneId.systemDefault());
            GregorianCalendar cal0 = GregorianCalendar.from(zdt);
            if (zdt.toInstant().toEpochMilli() != cal0.getTimeInMillis() ||
                !zdt.equals(GregorianCalendar.from(zdt).toZonedDateTime())) {
                System.out.printf("ms: %16d  ns: %10d  ldt:[%s]%n", millis, nanos, ldt);
                throw new RuntimeException("FAILED: zdt -> gcal -> zdt");
            }
        }

        ///////////// java.util.TimeZone /////////////////////////
        for (String zidStr : TimeZone.getAvailableIDs()) {
            // TBD: tzdt intergration
            if (zidStr.startsWith("SystemV") ||
                zidStr.contains("Riyadh8") ||
                zidStr.equals("US/Pacific-New") ||
                zidStr.equals("EST") ||
                zidStr.equals("HST") ||
                zidStr.equals("MST")) {
                continue;
            }
            ZoneId zid = ZoneId.of(zidStr, ZoneId.SHORT_IDS);
            if (!zid.equals(TimeZone.getTimeZone(zid).toZoneId())) {
                throw new RuntimeException("FAILED: zid -> tz -> zid :" + zidStr);
            }
            TimeZone tz = TimeZone.getTimeZone(zidStr);
            // no round-trip for alias and "GMT"
            if (!tz.equals(TimeZone.getTimeZone(tz.toZoneId())) &&
                !ZoneId.SHORT_IDS.containsKey(zidStr) &&
                !zidStr.startsWith("GMT")) {
                throw new RuntimeException("FAILED: tz -> zid -> tz :" + zidStr);
            }
        }
        System.out.println("Passed!");
    }
 

/**
    * Creates the {@link Refill} that does refill of tokens in intervally manner.
    * "Intervally" in opposite to "greedy"  will wait until whole {@code period} will be elapsed before regenerate {@code tokens}.
    * <br>
    * In additional to {@link #intervally(long, Duration)} it is possible to specify the time when first refill should happen via {@code timeOfFirstRefill}.
    * This option can be used to configure clear interval boundary i.e. start of second, minute, hour, day.
    *
    * <p>
*     <strong>Special notes about useAdaptiveInitialTokens:</strong>
    * <br>If {@code useAdaptiveInitialTokens == true} and timeOfFirstRefill is a moment in the future, then initial amount of tokens in the bandwidth will be calculated by following formula:
    * <br><pre>{@code
    *     Math.min(capacity, Math.max(0, bandwidthCapacity - refillTokens) + (timeOfFirstRefillMillis - nowMillis)/refillPeriod * refillTokens)
    * }</pre>
    * <br>Bellow the list of examples of how does this formula can be applied:
    * <pre>
    * {@code
    *         // imagine that wall clock is 16:20, the first refill will happen at 17:00
    *         // first refill will happen in the beginning of next hour
    *         Instant firstRefillTime = ZonedDateTime.now()
    *                 .truncatedTo(ChronoUnit.HOURS)
    *                 .plus(1, ChronoUnit.HOURS)
    *                 .toInstant();
    *
    *        // initial tokens 266 will be
    *        Bandwidth.classic(400, Refill.intervallyAligned(400, Duration.ofHours(1), firstRefillTime, true));
    *        // calculated by formula min(400, max(0, 400 - 400) +  40/60*400) = min(400, 0 + 266) = 266
    *
    *        // initial tokens will be 300
    *        Bandwidth.classic(400, Refill.intervallyAligned(300, Duration.ofHours(1), firstRefillTime, true));
    *        // calculated by formula min(400, max(0, 400 - 300) +  40/60*300) = min(400, 100 + 200) = 300
    *
    *        // initial tokens will be 333
    *        Bandwidth.classic(400, Refill.intervallyAligned(200, Duration.ofHours(1), firstRefillTime, true));
    *        // calculated by formula min(400, max(0, 400 - 200) +  40/60*200) = min(400, 200 + 133) = 333
    *
    *        // initial tokens will be 366
    *        Bandwidth.classic(400, Refill.intervallyAligned(100, Duration.ofHours(1), firstRefillTime, true));
    *        // calculated by formula min(400, max(0, 400 - 100) +  40/60*100) = min(400, 300 + 66) = 366
    * }</pre>
    *
    *
    *     <strong>Restrictions:</strong>
    *     <ul>
    *         <li>
    *             If {@code useAdaptiveInitialTokens} is {@code true} then any attempt to explicitly specify initial amount of tokens via {@link Bandwidth#withInitialTokens(long)}
    *             will fail with exception, because it is impossible at the same time to specify tokens in explicitly and adaptively manners.
    *         </li>
    *         <li>
    *             It is impossible to use this method together with nanoTime based clock {@link LocalBucketBuilder#withNanosecondPrecision()}, because we need in {@link System#currentTimeMillis()} based clock
    *             in order to properly measure the distance from {@code timeOfFirstRefill}
    *         </li>
    *     </ul>
    *
    *
    * @param tokens amount of tokens
    * @param period the period within {@code tokens} will be fully regenerated
    * @param timeOfFirstRefill the time of first refill, typically it should be a moment in the future
    * @param useAdaptiveInitialTokens if {@code true} then initialTokens may be reduced
    *
    * @return the {@link Refill} that does refill of tokens in intervally manner
    */
   public static Refill intervallyAligned(long tokens, Duration period, Instant timeOfFirstRefill, boolean useAdaptiveInitialTokens) {
       long timeOfFirstRefillMillis = timeOfFirstRefill.toEpochMilli();
       if (timeOfFirstRefillMillis < 0) {
           throw BucketExceptions.nonPositiveTimeOfFirstRefill(timeOfFirstRefill);
       }
       return new Refill(tokens, period, true, timeOfFirstRefillMillis, useAdaptiveInitialTokens);
   }
 

/**
 * Obtains an instance of {@code Date} from an {@code Instant} object.
 * <p>
 * {@code Instant} uses a precision of nanoseconds, whereas {@code Date}
 * uses a precision of milliseconds.  The conversion will trancate any
 * excess precision information as though the amount in nanoseconds was
 * subject to integer division by one million.
 * <p>
 * {@code Instant} can store points on the time-line further in the future
 * and further in the past than {@code Date}. In this scenario, this method
 * will throw an exception.
 *
 * @param instant  the instant to convert
 * @return a {@code Date} representing the same point on the time-line as
 *  the provided instant
 * @exception NullPointerException if {@code instant} is null.
 * @exception IllegalArgumentException if the instant is too large to
 *  represent as a {@code Date}
 * @since 1.8
 */
public static Date from(Instant instant) {
    try {
        return new Date(instant.toEpochMilli());
    } catch (ArithmeticException ex) {
        throw new IllegalArgumentException(ex);
    }
}
 

/**
 * Sets the instant that the event occurred.
 * <p>
 * If the given {@code instant} represents a point on the time-line too
 * far in the future or past to fit in a {@code long} milliseconds and
 * nanoseconds adjustment, then an {@code ArithmeticException} will be
 * thrown.
 *
 * @param instant the instant that the event occurred.
 *
 * @throws NullPointerException if {@code instant} is null.
 * @throws ArithmeticException if numeric overflow would occur while
 *         calling {@link Instant#toEpochMilli() instant.toEpochMilli()}.
 *
 * @since 9
 */
public void setInstant(Instant instant) {
    instant.toEpochMilli();
    this.instant = instant;
}