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Channel

Java Ready | Программирование

@java_ready

On this record: Topic · Growth · Engagement · What this channel posts · Reactions · Posts · Posts recorded as deleted · Citations · Handles named that no longer answer · Cite this entry

9,418subscribers

+878 since we began measuring on 7 August 2026

Risers and fallers across the register · movement among entries of 3,162–10,000.

Register entry

Telegram ID-1001969855746
TypeChannel
Username@java_ready
DescriptionАвторский канал по разработке на Java. Ресурсы, гайды, задачи, шпаргалки. Информация ежедневно пополняется! Cотрудничество: @energy_c Реклама на бирже: https://telega.in/channels/java_ready/card
CreatedBetween 1 April 2023 and 31 October 2023 — estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded7 August 2026
Last confirmed live9 November 2026
Measurements held26
Confirmed unchanged1 time, most recently 9 November 2026
On Telegramt.me/java_ready

Topic

Technology — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-FP8, prompt version 1) read this channel’s own recent posts on 11 September 2026 and assigned it the closest of 31 fixed categories, at 72% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and the other topics.

Growth

8,5399,4368,987.57 August 2026 — 8,540 subscribers7 August 2026 — 8,539 subscribers11 August 2026 — 8,682 subscribers14 August 2026 — 8,798 subscribers17 August 2026 — 8,849 subscribers21 August 2026 — 8,943 subscribers24 August 2026 — 8,955 subscribers27 August 2026 — 9,008 subscribers30 August 2026 — 9,006 subscribers3 September 2026 — 9,007 subscribers8 September 2026 — 9,051 subscribers13 September 2026 — 9,090 subscribers16 September 2026 — 9,100 subscribers24 September 2026 — 9,098 subscribers4 October 2026 — 9,248 subscribers10 October 2026 — 9,255 subscribers14 October 2026 — 9,256 subscribers17 October 2026 — 9,321 subscribers20 October 2026 — 9,364 subscribers23 October 2026 — 9,356 subscribers26 October 2026 — 9,344 subscribers29 October 2026 — 9,373 subscribers31 October 2026 — 9,436 subscribers3 November 2026 — 9,422 subscribers6 November 2026 — 9,428 subscribers9 November 2026 — 9,418 subscribers9,4187 August 20269 November 2026
26 measurements spanning 94 days, net +878. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 8,404–9,571 and does not start at zero.
Measurement log — every subscribers count we have recorded, most recent 20 of 26
Measured (UTC)SubscribersChange
9 Nov 2026, 15:409,418-10
6 Nov 2026, 00:379,428+6
3 Nov 2026, 08:499,422-14
31 Oct 2026, 19:309,436+63
29 Oct 2026, 00:489,373+29
26 Oct 2026, 08:159,344-12
23 Oct 2026, 15:309,356-8
20 Oct 2026, 08:369,364+43
17 Oct 2026, 15:299,321+65
14 Oct 2026, 10:009,256+1
10 Oct 2026, 17:399,255+7
4 Oct 2026, 20:199,248+150
24 Sept 2026, 22:169,098-2
16 Sept 2026, 22:409,100+10
13 Sept 2026, 00:189,090+39
8 Sept 2026, 20:569,051+44
3 Sept 2026, 08:159,007+1
30 Aug 2026, 15:489,006-2
27 Aug 2026, 18:439,008+53
24 Aug 2026, 13:288,955first reading

Engagement

54 posts held, back to 29 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 54 pages of Telegram’s post history, 20 posts per page.

ERR · 30 days
10.2%
avg views ÷ 9,418 subscribers
Avg views / post
959
22 posts measured
Reaction rate
1.06%
reactions ÷ views · ER floor
Posts in window
22
of 54 held

ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.

ER is defined industry-wide as (forwards + reactions + comments) ÷ views — note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate. It is computed over the 21 of 22 measured posts that carry a reaction reading, and over those same posts' views.

What these figures were computed from
WindowRolling 30 days · latest post in window 11 November 2026
Posts held54 (29 July 2026 – 11 November 2026)
Views total21,094
Reactions total217
Forwards / commentsnot exposed by the public surface — not measured, not estimated
Readings taken12 Nov 2026, 01:34 UTC

Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.

Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.

Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.

What this channel posts

Photos
≈1,490
Videos
≈78
Links
≈797

Lifetime counters from Telegram’s own channel header, read 12 November 2026 — not the date at the top of this page, which is when the subscriber count was last read. A count marked ≈ was rounded by Telegram before we ever saw it — t.me prints these counters in full below 1,000 and to three significant figures above, so ≈142,000 means somewhere between 141,500 and 142,499.

Video runtime
1m 05s
Average length
16s

Measured directly from 4 videos with a duration reading, out of the posts we hold for this channel — not this channel’s whole posting history, only the sample this register has actually read. An exact reading to the second, taken from the post itself rather than from Telegram’s own rounded chrome, so it carries no ≈ mark.

Reaction mix

661 reactions across 53 posts, in 5 distinct kinds. The most used accounts for 37.7% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
❤24937.7%
👍21131.9%
🔥19429.3%
🤝60.908%
👎10.151%

No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.

Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.

Coverage. Reactions were read on 53 of the 54 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 661 reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.

Measured over the 54 most recent posts we hold, published 29 July 2026 to 11 November 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.

Recent posts

Telegram’s own ‘edited’ marker: 0 of 22 posts held from the last 30 days (0%) carried it when this register last read them. The marker says a post was changed after publishing, not what it said before — this register holds the earlier wording only where an edit fell between two of its own reads (see the edit ledger and how it is measured).

11 Nov 2026, 07:10 UTC488 views9 reactionsread 12 November 2026
Photo

Почему новая реплика Java-сервиса не получает готовые JIT-оптимизации? Одинаковый JAR запускается в нескольких JVM, но каждая из них отдельно наблюдает за нагрузкой и прогревает горячие методы. В статье автор показывает: • какие предположения JIT использует для ускорения вызовов • почему машинный код зависит от состояния конкретной JVM • что мешает безопасно переносить оптимизации между репликами Даже при одинаков…

❤3👍3🔥3

10 Nov 2026, 17:00 UTC564 views9 reactionsread 12 November 2026

Перезагружаем конфиг после изменений без перезапуска! Файловый редактор может сохранить конфиг несколькими операциями, а не одним изменением. Создадим наблюдатель за каталогом, отфильтруем нужный файл и объединим частые события через короткую задержку. Регистрируем каталог, а не сам файл: Path dir = Path.of("config"); WatchService watcher = dir.getFileSystem().newWatchService(); dir.register( watcher, ENTRY…

❤3👍3🔥3

10 Nov 2026, 15:00 UTC563 viewsread 12 November 2026
Photo

🔴В 2025 году Россияне заработали 5,3 млрд рублей на арбитраже криптовалют По данным Минфин 32% граждан покинули своё место работы поскольку в среднем уже в первый месяц смогли заработать 250 000 рублей, а через 2-3 месяца с легкостью вышли на семизначные числа. Самое смешное, что лишь 8% россиян что-то слышали об этой профессии хотя все инструкции бесплатно лежат на канале Арбитраж Криптовалют Там объясняют, как и…

10 Nov 2026, 06:10 UTC670 views6 reactionsread 12 November 2026
Photo

Почему InputStream.read не всегда заполняет весь буфер? Вызов read(byte[]) возвращает число байтов, прочитанных за один вызов. Поток может отдать меньше данных, чем помещается в буфер: int count = input.read(buffer); if (count < 0) return; Значение -1 означает конец потока. Положительное число сообщает только о частичном чтении, поэтому для сообщения известной длины продолжаем читать остаток. При каждом чтении пер…

❤2👍2🔥2

9 Nov 2026, 08:10 UTC758 views10 reactionsread 12 November 2026
Photo

Как виртуальный поток освобождает carrier во время ожидания I/O! На схеме видно, как JVM назначает виртуальные потоки небольшому числу carrier threads. Когда виртуальный поток ждёт ввод-вывод, он при подходящих условиях снимается с carrier, а тот может выполнить другую задачу. Сохрани, чтобы не потерять! 👉 Java Ready | #ресурс

❤4👍3🔥3

6 Nov 2026, 16:10 UTC≈1,020 views10 reactionsread 12 November 2026
Photo

Почему порядок методов Reflection может меняться? getDeclaredMethods() возвращает массив методов класса, но не обещает порядок исходного файла. Если на этой последовательности строится список обработчиков, команд или пунктов интерфейса, результат может зависеть от деталей компиляции. Получаем методы класса: Method[] methods = type.getDeclaredMethods(); Нельзя считать первый элемент главным или ожидать, что методы …

❤4👍3🔥3

6 Nov 2026, 07:10 UTC972 views11 reactionsread 12 November 2026
Photo

Шпаргалка по Gatherers в Java 24! Gatherers добавляет в Stream промежуточные операции для окон, накопления и параллельного преобразования. В отличие от обычных map и filter, Gatherer может хранить состояние, выдавать группы элементов или управляемо завершать обработку. На карточках собраны windowFixed, windowSliding, scan, mapConcurrent и fold, а также применение и композиция Gatherer. Эти операции помогают строить…

🔥6❤3👍2

5 Nov 2026, 10:10 UTC951 views7 reactionsread 12 November 2026

Проверяем подпись входящего webhook на Java! Сначала сверяем HMAC-подпись провайдера с исходными байтами тела, а уже после проверки разбираем JSON. Считаем ожидаемую подпись от сырого тела запроса: Mac mac = Mac.getInstance("HmacSHA256"); mac.init(new SecretKeySpec(secret, "HmacSHA256")); byte[] expected = mac.doFinal(rawBody); Секрет передаётся в байтах, а rawBody сохраняется без повторной сериализации. Даже изме…

❤3👍2🔥2

5 Nov 2026, 06:10 UTC923 views10 reactionsread 12 November 2026
Photo

Photo, posted without a caption

❤4👍3🔥3

4 Nov 2026, 08:10 UTC≈1,020 views16 reactionsread 12 November 2026
Photo

Шпаргалка по ScopedValue в Java! ScopedValue передаёт неизменяемый контекст через цепочку вызовов без добавления параметра в каждый метод. Binding действует только во время run или call и автоматически завершается вместе с этим scope. На карточках собраны создание ключа, связывание значения, запуск действия и чтение binding. ScopedValue подходит для односторонней передачи контекста и не заменяет изменяемое хранилищ…

🔥7❤5👍4

3 Nov 2026, 11:10 UTC935 views11 reactionsread 12 November 2026
Photo

Знаете, почему Collectors.toMap иногда завершается исключением? Двухаргументный вариант подходит, когда ключи гарантированно уникальны. Если два объекта дают одинаковый ключ, сборщик не выбирает значение молча, а выбрасывает IllegalStateException. Например, события могут повторять тип: Map<String, Long> counts = events.stream() .collect(Collectors.toMap( Event::type, Event::id)); При повторе типа такой…

❤5👍3🔥3

3 Nov 2026, 06:10 UTC830 views10 reactionsread 12 November 2026
Video

Курс Stanford CS106A с лекциями по Java! На странице курса доступны 28 полноценных лекций с видео, конспектами и материалами занятий. Темы идут от первых программ и циклов до классов, коллекций, интерфейсов, графики, отладки и базовых алгоритмов. К каждой лекции приложены темы и дополнительные материалы, а для практики есть задания и экзаменационные варианты. Просмотр материалов открыт без обязательной регистрации.…

❤4👍3🔥3

Showing the 12 most recent of 54 posts we hold for @java_ready. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.

Posts recorded as deleted after publishing

We recorded 11 posts on @java_ready as deleted — posts this register held that were missing from the channel’s public page on two separate reads, taken from different network addresses at least an hour apart.

A deletion is not wrongdoing. This register can see that a post it held is no longer on the channel’s public page, and when — not why. Expired ad placements, reposts, rotating links and corrections all look the same. This is a count of recorded detections, not an exact total: it misses deletions we could not see, because only a post we held and later re-read inside the page can be seen to go, and it may include a small number of wrong records. How this is measured.

First seen missing
8 August 2026
Most recent seen missing
10 November 2026
Median time before seen missing
3 days
Seen missing in the last 30 days
4

Mentions

A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.

Cite this entry

A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 9 November 2026 — this entry's latest reading, not the date you are reading this.

“Java Ready | Программирование” (@java_ready), 9,418 subscribers as measured 9 November 2026. Telegram Register, tgregister.com/channel/java_ready.

Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.