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Java | Фишки и трюки

@java_tips_and_tricks

On this record: Topic · Growth · Engagement · Reactions · Posts · Telegram's recommendations · Cite this entry

6,691subscribers

-112 since we began measuring on 7 September 2026

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

Register entry

Telegram ID-1001635707605
TypeChannel
Username@java_tips_and_tricks
CreatedBetween 1 December 2021 and 30 April 2023 — estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded7 September 2026
Last confirmed live25 October 2026
Measurements held10
Confirmed unchanged1 time, most recently 25 October 2026
On Telegramt.me/java_tips_and_tricks

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 28 September 2026 and assigned it the closest of 31 fixed categories, at 98% 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 why it has no browse page of its own yet.

Growth

6,6916,8036,7477 September 2026 — 6,803 subscribers9 September 2026 — 6,798 subscribers14 September 2026 — 6,788 subscribers18 September 2026 — 6,762 subscribers28 September 2026 — 6,748 subscribers5 October 2026 — 6,731 subscribers12 October 2026 — 6,716 subscribers19 October 2026 — 6,708 subscribers22 October 2026 — 6,700 subscribers25 October 2026 — 6,691 subscribers7 September 202625 October 2026
10 measurements spanning 48 days, net -112. 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 6,674–6,820 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)SubscribersChange
25 Oct 2026, 07:456,691-9
22 Oct 2026, 05:116,700-8
19 Oct 2026, 04:296,708-8
12 Oct 2026, 12:146,716-15
5 Oct 2026, 20:006,731-17
28 Sept 2026, 01:216,748-14
18 Sept 2026, 16:216,762-26
14 Sept 2026, 00:586,788-10
9 Sept 2026, 21:396,798-5
7 Sept 2026, 00:226,803first reading

Engagement

20 posts held, back to 2 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 1 page of 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 20 posts for this entry, the most recent from 1 September 2026. An engagement rate over an empty window would be a number about nothing.

Reaction mix

139 reactions across 20 posts, in 5 distinct kinds. The most used accounts for 71.9% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
👍10071.9%
❤2920.9%
❤‍🔥53.60%
👎32.16%
🤔21.44%

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 20 of the 20 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 139 reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.

Measured over the 20 most recent posts we hold, published 2 July 2026 to 1 September 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

1 Sept 2026, 09:22 UTC528 views7 reactionsread 7 September 2026

⌨️ Фишка: Создание итератора для пользовательского класса. Код: import java.util.Iterator; public class CustomClass implements Iterable<String> { private String[] elements; public CustomClass(String[] elements) { this.elements = elements; } @Override public Iterator<String> iterator() { return new CustomIterator(); } private class CustomIterator implements Iterator<Str…

❤‍🔥5👍2

31 Aug 2026, 09:52 UTC600 views6 reactionsread 7 September 2026

⌨️ Параллельное выполнение задач с использованием ExecutorService ExecutorService - это интерфейс, который предоставляет удобный способ для управления параллельным выполнением задач. Он предоставляет пул потоков для выполнения задач и управляет их жизненным циклом: import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; public class Main { public static void main(String[] args) { …

👍4❤2

30 Aug 2026, 09:05 UTC626 views6 reactionsread 7 September 2026

⌨️ Метод для глубокого копирования объектов. Это часто используется, когда нужно создать копию объекта, сохраняя его данные, но не связи с другими объектами. 📌 Вот пример метода для глубокого копирования: import java.io.*; public class DeepCopyExample { public static void main(String[] args) { Person person = new Person("John", 30); Person deepCopy = deepCopy(person); System.out.printl…

👍4❤2

29 Aug 2026, 14:05 UTC655 views8 reactionsread 7 September 2026

⌨️ Использования анонимных классов: Анонимный класс - это класс без имени, который объявляется и создается внутри другого класса или метода. Он удобен, когда требуется определить класс, который будет использоваться только один раз, и нет необходимости создавать отдельный класс. public class Main { interface Greeting { void sayHello(); } public static void main(String[] args) { Greeting …

👍5❤3

29 Aug 2026, 09:36 UTC666 views7 reactionsread 7 September 2026

⌨️ Использование класса java.time.Duration для рассчета разницы во времени между двумя моментами. Код для расчета разницы во времени: import java.time.Duration; import java.time.LocalDateTime; public class TimeDifferenceCalculator { public static void main(String[] args) { LocalDateTime startTime = LocalDateTime.of(2022, 1, 1, 10, 0, 0); LocalDateTime endTime = LocalDateTime.of(2022, 1, 1, 1…

👍6❤1

25 Aug 2026, 19:19 UTC≈1,040 views11 reactionsread 7 September 2026

⌨️ Использование аннотации @FunctionalInterface для определения функциональных интерфейсов. Функциональные интерфейсы - это интерфейсы, которые содержат только один абстрактный метод и могут использоваться как типы данных для лямбда-выражений или методов высшего порядка. При использовании аннотации @FunctionalInterface вы указываете компилятору, что этот интерфейс должен содержать только один абстрактный метод, что…

👍10❤1

24 Aug 2026, 15:40 UTC865 views6 reactionsread 7 September 2026

⌨️ Использование методов default и static в интерфейсах. Эти методы позволяют добавлять конкретные реализации в интерфейсы, что делает их более гибкими и позволяет избежать некоторых проблем множественного наследования. Пример с default методом в интерфейсе: interface Greeter { void greet(); // Default метод в интерфейсе default void greetWithExclamation() { System.out.println("Привет, мир!"); …

👍5❤1

18 Aug 2026, 17:27 UTC≈1,100 views5 reactionsread 7 September 2026

⌨️ Использование java.util.stream.Collectors для обработки коллекций Код: import java.util.List; import java.util.stream.Collectors; public class StreamCollectorsExample { public static void main(String[] args) { List<Integer> numbers = List.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); // Примеры использования Collectors // Преобразование элементов коллекции в строку String numbersAsStri…

👍4❤1

17 Aug 2026, 13:52 UTC≈1,040 views8 reactionsread 7 September 2026

⌨️ "Фабричный метод" (Factory Method). Этот паттерн позволяет создавать объекты без указания конкретных классов объектов. Вместо прямого создания объекта класса, создание объекта делегируется методу (фабричному методу), который может быть переопределен подклассом, чтобы изменить тип создаваемого объекта. Пример реализации: 1️⃣Создадим интерфейс продукта, который будет производиться фабричным методом. interface Pr…

👍3👎3❤1🤔1

10 Aug 2026, 11:07 UTC≈1,240 views6 reactionsread 7 September 2026

🔔Использование JShell для быстрой проверки и экспериментов с кодом. Пример кода: $ jshell | Welcome to JShell -- Version 11.0.12 | For an introduction type: /help intro jshell> int result = 10 + 20; result ==> 30 jshell> String message = "Hello, World!"; message ==> "Hello, World!" ✔️JShell позволяет быстро проводить эксперименты, проверять короткие фрагменты кода, тестировать API и проводить быстрые исследов…

👍5❤1

4 Aug 2026, 09:12 UTC≈1,550 views7 reactionsread 7 September 2026

☕️Использование метода computeIfAbsent() из интерфейса Map. Этот метод предлагает удобный способ вычисления и вставки значений в мапу, если они отсутствуют. Пример кода с объяснением: import java.util.HashMap; import java.util.Map; public class MapExample { public static void main(String[] args) { Map<String, Integer> wordLengths = new HashMap<>(); String word = "apple"; // Использова…

👍6❤1

30 Jul 2026, 12:09 UTC≈1,590 views5 reactionsread 7 September 2026

☕️Использование CountDownLatch CountDownLatch - это класс в Java, который предоставляет возможность создания ожидания, пока не завершится определенное количество операций или событий. Он часто используется для ожидания завершения параллельных потоков. Пример кода: import java.util.concurrent.CountDownLatch; public class Main { public static void main(String[] args) throws InterruptedException { int co…

❤3👍2

Showing the 12 most recent of 20 posts we hold for @java_tips_and_tricks. 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.

Appears in Telegram’s recommendations for other channels

The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.

Senior Java Developer
@seniorjavist · 20,501
Telegram ranks this channel #7 of 89 here — alongside 88 others — read 26 September 2026
Библиотека джависта | Java, Spring, Maven, Hibernate
@javaproglib · 21,910
Telegram ranks this channel #10 of 88 here — alongside 87 others — read 21 September 2026
Java библиотека
@javalib · 30,537
Telegram ranks this channel #11 of 84 here — alongside 83 others — read 7 September 2026

This channel appears in 3 seed channels' Telegram-generated recommendation lists in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.

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 25 October 2026 — this entry's latest reading, not the date you are reading this.

“Java | Фишки и трюки” (@java_tips_and_tricks), 6,691 subscribers as measured 25 October 2026. Telegram Register, tgregister.com/channel/java_tips_and_tricks.

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.