Channel
@java_developer
On this record: Growth · Engagement · What this channel posts · Reactions · Posts · Citations · Handles named that no longer answer · Cite this entry
6,398subscribers
-9 since we began measuring on 6 August 2026
Risers and fallers across the register · movement among entries of 3,162–10,000.
| Telegram ID | -1001333036806 |
|---|---|
| Type | Channel |
| Username | @java_developer |
| Created | 19 February 2018 — measured — cross-checked against a third-party dataset (TGDataset) |
| First recorded | 6 August 2026 |
| Last confirmed live | 13 August 2026 |
| Measurements held | 5 |
| Confirmed unchanged | 1 time, most recently 13 August 2026 |
| On Telegram | t.me/java_developer |
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 13 Aug 2026, 08:34 | 6,398 | -7 |
| 10 Aug 2026, 09:01 | 6,405 | -3 |
| 7 Aug 2026, 06:35 | 6,408 | +1 |
| 6 Aug 2026, 08:45 | 6,407 | no change |
| 6 Aug 2026, 08:38 | 6,407 | first reading |
11 posts held, back to 20 December 2024 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 9 pagesof Telegram’s post history, 20 posts per page.
Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 11 posts for this entry, the most recent from 20 April 2025. An engagement rate over an empty window would be a number about nothing.
Measured directly from 1 video 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.
393 reactions across 11 posts, in 3 distinct kinds. The most used accounts for 73.8% of them.
| Reaction | Count | Share | Share, drawn |
|---|---|---|---|
| ❤ | 290 | 73.8% | |
| 😁 | 98 | 24.9% | |
| 👨💻 | 5 | 1.27% |
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 11 of the 11 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 393reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.
Measured over the 11 most recent posts we hold, published 20 December 2024 to 20 April 2025, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.
Что посмотреть на выходных — 20 Наткнулся в Ютубе на классное шоу. Такой мини-формат Своей игры только между джавистами бигтеха. Команды: X5, Сбер, Тинькофф, Самокат, Мир Пей, RuStore, Тинькофф. Пару шуток-перебивок из шоу: Сколько волка не корми — всё равно опыт крутит На концерте классической музыки весь зал на сцене видит дирижёра. И только devops-инженер видит там оркестратора https://youtube.com/playlist?lis…
❤22
Впечатления от JPoint 2025 моего коллеги Впечатления позитивные: большинство докладов понравились, интересные темы, классные спикеры. Особенно зашёл доклад «Путеводитель по профилированию приложений на JVM» — захотелось применить. Понравился и формат ответов на вопросы после докладов — очень живая атмосфера и возможность пообщаться лично со спикерами. Отдельно удивило, что были доклады на английском. Из минусов —…
❤13😁1
JPoint 2025 Вчера сходил на JPoint — Java-конференцию для опытных разработчиков. Билет мне оплатила компания (правда, с условием отработать ещё полгода или вернуть деньги при увольнении). Последний раз был на крупной конференции в 2018 в Питере на Joker. Если сравнивать, то участников и спонсоров сейчас стало поменьше и мерч поскромнее, зато стенды теперь более яркие и современные. Доклады по-прежнему на высоком уро…
❤30👨💻5😁2
Video, posted without a caption
😁42❤7
яндексоиды, без негатива )
❤7😁1
Kafka Какие есть гарантии доставки сообщений Ответ: 1. At most once (не более одного раза): Сообщение может быть потеряно, но никогда не будет доставлено повторно. 2. At least once (как минимум один раз): Сообщение доставляется минимум один раз, но возможно повторное получение. 3. Exactly once (ровно один раз): Сообщение доставляется и обрабатывается строго один раз. Это наиболее надёжная гарантия, достигается с по…
❤22
Java Core Чем отличается abstract class от interface? Ответ: 1. Наследование • abstract class может extends только один класс (single inheritance), но может реализовывать несколько интерфейсов. • interface может extends несколько других интерфейсов (множественное «наследование» интерфейсов). 2. Методы • abstract class может содержать как абстрактные, так и реализованные методы. Поддерживает любые модификаторы …
❤33
Spring При каких условиях транзакция Spring будет откатана (rollback)? Ответ: 1. Если выброшено unchecked исключение (наследник RuntimeException или Error). 2. Если выброшено checked исключение, указанное в аннотации @Transactional с параметром rollbackFor. @Transactional(rollbackFor = { IOException.class }) Примечание: Checked исключения (например, IOException) по умолчанию не вызывают роллбэк, поэтому их нужно…
❤43😁4
Java Stream API Разница между методами map и flatMap • Метод map принимает функцию, которая вызывается для каждого элемента стрима и преобразует его в другое значение. В результате получается стрим с преобразованными элементами, структура стрима при этом не меняется. List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5); List<String> strings = numbers.stream() .map(number -> String.valueOf(number)) .collect…
❤42😁6
Spring Для чего используется аннотация @Qualifier Ответ: Когда есть несколько бинов одного типа, то используя @Qualifier мы говорим Spring'у, какой именно бин внедрить. При этом также существует аннотация @Primary. Если мы укажем бин @Primary, то Spring его выберет по умолчанию. Когда нужен конкретный другой бин, то @Qualifier переопределит выбор @Primary. Kafka Как сделать, чтобы сообщения по одному процессу обр…
❤65😁5
так, на чём мы тут остановились
😁37❤6
Showing the 11 most recent of 11 posts we hold for @java_developer. 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.
Citation-graph rank — 1,082,986 of 1,169,250entries in the measured graph. A weighted position computed from the forward and mention edges below — republished posts weigh more than named mentions — and recomputed periodically, over the whole graph. Published only as this ordinal position, never as a score: a position is a fact, and a score printed beside one channel’s name would read as a verdict this register does not make. The two counts beneath stay separate for the same reason mentions are never summed with forwards anywhere else on this page — a named-by count costs nothing to manufacture. The top 100 by this measure, or how it is computed.
Republishes
Channels on the register whose posts this channel has forwarded.
Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.
Named by 1 registered channel — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.
Named by
Channels on the register whose posts name this channel's handle.
Names
Channels on the register whose handles appear in this channel's posts.
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.
@java_developer named 1 handle that resolve to nothing today. That is a fact about the reference, not necessarily a fact about the handle’s history — see the two groups below.
Most of these may never have existed as a live channel at all.A handle a channel names can be a typo, an aspirational name nobody registered, or a channel that was already gone before this one ever mentioned it. Unless a row below is marked evidenced, all we know is that it references a handle that is not a live channel today — not that anything “died”. How this is measured.
References a handle that is not a live channel — we have no record it ever was one.
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 13 August 2026 — this entry's latest reading, not the date you are reading this.
“Java Developer” (@java_developer), 6,398 subscribers as measured 13 August 2026. Telegram Register, tgregister.com/channel/java_developer.
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.