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