Top Tweets for #JavaEvolved
โ Instant with nanosecond precision
Get timestamps with microsecond or nanosecond precision.
Milliseconds โ Nanoseconds (JDK 9+)
๐ https://t.co/GUan38y34T
#Java #JavaEvolved
โ Null case in switch
Handle null directly as a switch case โ no separate guard needed.
Guard Before Switch โ case null (JDK 21+)
๐ https://t.co/TcQndtXOhs
#Java #JavaEvolved
โ JNDI Lookup vs CDI Injection
Replace fragile JNDI string lookups with type-safe CDI injection for container-managed resources.
JNDI Lookup โ CDI @Inject (JDK 11+)
๐ https://t.co/le1mBXrbPB
#Java #JavaEvolved
โ TLS 1.3 by default
TLS 1.3 is enabled by default โ no explicit protocol configuration needed.
Manual TLS Config โ TLS 1.3 Default (JDK 11+)
๐ https://t.co/688kWl0Zrl
#Java #JavaEvolved
โ Manual JPA Transaction vs Declarative @Transactional
Replace verbose begin/commit/rollback blocks with a single @Transactionaโฆ
Manual Transaction โ @Transactional (JDK 11+)
๐ https://t.co/QUxXRpTr3T
#Java #JavaEvolved
โ Unmodifiable collectors
Collect directly to an unmodifiable list with stream.toList().
collectingAndThen โ stream.toList() (JDK 16+)
๐ https://t.co/TFzqYxelL3
#Java #JavaEvolved
โ Path.of() factory
Use Path.of() โ the modern factory method on the Path interface.
Paths.get() โ Path.of() (JDK 11+)
๐ https://t.co/jBnqyIgELv
#Java #JavaEvolved
โ Duration and Period
Calculate time differences with type-safe Duration and Period.
Millisecond Math โ Duration / Period (JDK 8+)
๐ https://t.co/g5EnaaVQLp
#Java #JavaEvolved
โ String.formatted()
Call formatted() on the template string itself.
String.format() โ formatted() (JDK 15+)
๐ https://t.co/T24ksWgx8V
#Java #JavaEvolved
โ Stream.mapMulti()
Emit zero or more elements per input without creating intermediate streams.
flatMap + List โ mapMulti() (JDK 16+)
๐ https://t.co/RW1YP1vPg7
#Java #JavaEvolved
โ Modern HTTP client
Use the built-in HttpClient for clean, modern HTTP requests.
HttpURLConnection โ HttpClient (JDK 11+)
๐ https://t.co/r7Nv3qIVdN
#Java #JavaEvolved
โ Spring Framework 7 API Versioning
Replace duplicated version-prefixed controllers with Spring Framework 7's native API verโฆ
Manual URL Path Versioning โ Native API Versioning (JDK 17+)
๐ https://t.co/e5rXtDfnkJ
#Java #JavaEvolved
โ CompletableFuture chaining
Chain async operations without blocking, using CompletableFuture.
Blocking Future.get() โ CompletableFuture (JDK 8+)
๐ https://t.co/dCdkKtkJQ7
#Java #JavaEvolved
โ Markdown in Javadoc comments
Write Javadoc comments in Markdown instead of HTML for better readability.
HTML-based Javadoc โ Markdown Javadoc (JDK 23+)
๐ https://t.co/lfuWf5O7H0
#Java #JavaEvolved
โ Scoped values
Share data across call stacks safely without ThreadLocal pitfalls.
ThreadLocal โ ScopedValue (JDK 25+)
๐ https://t.co/mgpFEMRBH1
#Java #JavaEvolved
โ Map.entry() factory
Create map entries with a clean factory method.
SimpleEntry โ Map.entry() (JDK 9+)
๐ https://t.co/olhFGEk17W
#Java #JavaEvolved
โ String.lines() for line splitting
Use String.lines() to split text into a stream of lines without regex overhead.
split("\\n") โ lines() (JDK 11+)
๐ https://t.co/HW1yTIg0Mu
#Java #JavaEvolved
โ Stream.toList()
Terminal toList() replaces the verbose collect(Collectors.toList()).
Collectors.toList() โ .toList() (JDK 16+)
๐ https://t.co/NBHIXqEUlG
#Java #JavaEvolved
โ ExecutorService auto-close
Use try-with-resources for automatic executor shutdown.
Manual Shutdown โ try-with-resources (JDK 19+)
๐ https://t.co/RABNmwshzc
#Java #JavaEvolved
โ Spring Null Safety with JSpecify
Spring 7 adopts JSpecify annotations, making non-null the default and reducing annotaโฆ
Spring @NonNull/@Nullable โ JSpecify @NullMarked (JDK 17+)
๐ https://t.co/shNDF4fUoH
#Java #JavaEvolved
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