Channel
@java_tips_and_tricks
On this record: Growth · Engagement · What this channel posts · Reactions · Posts · Telegram's recommendations · Cite this entry
6,803subscribers
Risers and fallers across the register · movement among entries of 3,162–10,000.
| Telegram ID | -1001635707605 |
|---|---|
| Type | Channel |
| Username | @java_tips_and_tricks |
| Description | Java: примеры кода, интересные фишки и полезные трюки Купить рекламу: https://telega.in/c/java_tips_and_tricks ✍️По всем вопросам: @Pascal4eg |
| Created | Between 1 December 2021 and 30 April 2023 — estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 7 September 2026 |
| Last confirmed live | 7 September 2026 |
| Measurements held | 1 |
| On Telegram | t.me/java_tips_and_tricks |
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 7 Sept 2026, 00:22 | 6,803 | first reading |
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.
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.
| Window | Rolling 30 days · latest post in window 1 September 2026 |
|---|---|
| Posts held | 20 (2 July 2026 – 1 September 2026) |
| Views total | 8,360 |
| Reactions total | 70 |
| Forwards / comments | not exposed by the public surface — not measured, not estimated |
| Readings taken | 7 Sept 2026, 00:22 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.
Lifetime counters from Telegram’s own channel header, read 7 September 2026 — not the date at the top of this page, which is when the subscriber count was last read. Below Telegram’s rounding threshold, so these counts are exact.
139 reactions across 20 posts, in 5 distinct kinds. The most used accounts for 71.9% of them.
| Reaction | Count | Share | Share, drawn |
|---|---|---|---|
| 👍 | 100 | 71.9% | |
| ❤ | 29 | 20.9% | |
| ❤🔥 | 5 | 3.60% | |
| 👎 | 3 | 2.16% | |
| 🤔 | 2 | 1.44% |
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.
⌨️ 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
⌨️ 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
⌨️ 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
⌨️ 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
⌨️ 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
⌨️ 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
⌨️ 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
⌨️ 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
⌨️ "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
🔔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
☕️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
☕️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.
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.
This channel appears in 1 seed channel's Telegram-generated recommendation list in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.
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 7 September 2026 — this entry's latest reading, not the date you are reading this.
“Java | Фишки и трюки” (@java_tips_and_tricks), 6,803 subscribers as measured 7 September 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.