Java. Evolved.

Brought to you by @brunoborges and @GitHubCopilot

[Java. Evolved. @javaevolved]

☕ Null case in switch

Handle null directly as a switch case — no separate guard needed.

Guard Before Switch → case null (JDK 21+)

🔗 https://t.co/TcQndtXOhs

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ JNDI Lookup vs CDI Injection

Replace fragile JNDI string lookups with type-safe CDI injection for container-managed resources.

JNDI Lookup → CDI @Inject (JDK 11+)

🔗 https://t.co/le1mBXrbPB

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ TLS 1.3 by default

TLS 1.3 is enabled by default — no explicit protocol configuration needed.

Manual TLS Config → TLS 1.3 Default (JDK 11+)

🔗 https://t.co/688kWl0Zrl

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Manual JPA Transaction vs Declarative @Transactional

Replace verbose begin/commit/rollback blocks with a single @Transactiona…

Manual Transaction → @Transactional (JDK 11+)

🔗 https://t.co/QUxXRpTr3T

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Unmodifiable collectors

Collect directly to an unmodifiable list with stream.toList().

collectingAndThen → stream.toList() (JDK 16+)

🔗 https://t.co/TFzqYxelL3

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Path.of() factory

Use Path.of() — the modern factory method on the Path interface.

Paths.get() → Path.of() (JDK 11+)

🔗 https://t.co/jBnqyIgELv

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Optional.orElseThrow() without supplier

Use Optional.orElseThrow() as a clearer, intent-revealing alternative to get().

get() or orElseThrow(supplier) → orElseThrow() (JDK 10+)

🔗 https://t.co/8pK34mT2Rn

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Duration and Period

Calculate time differences with type-safe Duration and Period.

Millisecond Math → Duration / Period (JDK 8+)

🔗 https://t.co/g5EnaaVQLp

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ String.formatted()

Call formatted() on the template string itself.

String.format() → formatted() (JDK 15+)

🔗 https://t.co/T24ksWgx8V

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Stream.mapMulti()

Emit zero or more elements per input without creating intermediate streams.

flatMap + List → mapMulti() (JDK 16+)

🔗 https://t.co/RW1YP1vPg7

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Modern HTTP client

Use the built-in HttpClient for clean, modern HTTP requests.

HttpURLConnection → HttpClient (JDK 11+)

🔗 https://t.co/r7Nv3qIVdN

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Spring Framework 7 API Versioning

Replace duplicated version-prefixed controllers with Spring Framework 7's native API ver…

Manual URL Path Versioning → Native API Versioning (JDK 17+)

🔗 https://t.co/e5rXtDfnkJ

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ CompletableFuture chaining

Chain async operations without blocking, using CompletableFuture.

Blocking Future.get() → CompletableFuture (JDK 8+)

🔗 https://t.co/dCdkKtkJQ7

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Markdown in Javadoc comments

Write Javadoc comments in Markdown instead of HTML for better readability.

HTML-based Javadoc → Markdown Javadoc (JDK 23+)

🔗 https://t.co/lfuWf5O7H0

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Scoped values

Share data across call stacks safely without ThreadLocal pitfalls.

ThreadLocal → ScopedValue (JDK 25+)

🔗 https://t.co/mgpFEMRBH1

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Map.entry() factory

Create map entries with a clean factory method.

SimpleEntry → Map.entry() (JDK 9+)

🔗 https://t.co/olhFGEk17W

#Java #JavaEvolved

[Bruno Borges @brunoborges]

Started 7 @GitHubCopilot Cloud Coding Agents in parallel, all by simply assigning them to Copilot.

The @javaevolved project has been adjusted to welcome PRs in parallel with near zero conflicts.

https://t.co/XyKH19SeyS

[Bruno Borges @brunoborges]

Introducing the @javaevolved Agent Plugin.

It detects your project's real Java target, then keeps AI guidance within the final features and APIs that version supports.

#Copilot #Claude #Codex

https://t.co/bEx5xuJYWx

[Java. Evolved. @javaevolved]

☕ String.lines() for line splitting

Use String.lines() to split text into a stream of lines without regex overhead.

split("\\n") → lines() (JDK 11+)

🔗 https://t.co/HW1yTIg0Mu

#Java #JavaEvolved

[Java. Evolved. @javaevolved]

☕ Stream.toList()

Terminal toList() replaces the verbose collect(Collectors.toList()).

Collectors.toList() → .toList() (JDK 16+)

🔗 https://t.co/NBHIXqEUlG

#Java #JavaEvolved