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Java. Evolved. @javaevolved

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Joined March 2026
  • Tweets 17
  • Following 23
  • Followers 199
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☕ Sealed classes for type hierarchies Restrict which classes can extend a type — enabling exhaustive switches. Open Hierarchy → sealed permits (JDK 17 ) 🔗 javaevolved.github.io/langua… #Java #JavaEvolved

Sealed classes for type hierarchies | java.evolved

Restrict which classes can extend a type — enabling exhaustive switches.

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☕ HexFormat Convert between hex strings and byte arrays with HexFormat. Manual Hex Conversion → HexFormat (JDK 17 ) 🔗 javaevolved.github.io/dateti… #Java #JavaEvolved

HexFormat | java.evolved

Convert between hex strings and byte arrays with HexFormat.

javaevolved.github.io
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☕ Multi-file source launcher Launch multi-file programs without an explicit compile step. Compile All First → Source Launcher (JDK 22 ) 🔗 javaevolved.github.io/toolin… #Java #JavaEvolved

Multi-file source launcher | java.evolved

Launch multi-file programs without an explicit compile step.

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☕ String.strip() vs trim() Use Unicode-aware stripping with strip(), stripLeading(), stripTrailing(). trim() → strip() (JDK 11 ) 🔗 javaevolved.github.io/string… #Java #JavaEvolved

String.strip() vs trim() | java.evolved

Use Unicode-aware stripping with strip(), stripLeading(), stripTrailing().

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☕ Module import declarations Import all exported packages of a module with a single declaration. Many Imports → import module (JDK 25 ) 🔗 javaevolved.github.io/langua… #Java #JavaEvolved

Module import declarations | java.evolved

Import all exported packages of a module with a single declaration.

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☕ Static methods in interfaces Add static utility methods directly to interfaces instead of separate utility classes. Utility classes → Interface static methods (JDK 8 ) 🔗 javaevolved.github.io/langua… #Java #JavaEvolved

Static methods in interfaces | java.evolved

Add static utility methods directly to interfaces instead of separate utility classes.

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☕ Pattern matching for instanceof Combine type check and cast in one step with pattern matching. instanceof Cast → Pattern Variable (JDK 16 ) 🔗 javaevolved.github.io/langua… #Java #JavaEvolved

Pattern matching for instanceof | java.evolved

Combine type check and cast in one step with pattern matching.

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☕ Writing files Write a String to a file with one line. FileWriter BufferedWriter → Files.writeString() (JDK 11 ) 🔗 javaevolved.github.io/io/wri… #Java #JavaEvolved

Writing files | java.evolved

Write a String to a file with one line.

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☕ Strong random generation Get the platform's strongest SecureRandom implementation. new SecureRandom() → getInstanceStrong() (JDK 9 ) 🔗 javaevolved.github.io/securi… #Java #JavaEvolved

Strong random generation | java.evolved

Get the platform's strongest SecureRandom implementation.

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☕ Unnamed variables with _ Use _ to signal intent when a variable is intentionally unused. Unused Variable → _ Placeholder (JDK 22 ) 🔗 javaevolved.github.io/langua… #Java #JavaEvolved

Unnamed variables with _ | java.evolved

Use _ to signal intent when a variable is intentionally unused.

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☕ String.repeat() Repeat a string n times without a loop. StringBuilder Loop → repeat() (JDK 11 ) 🔗 javaevolved.github.io/string… #Java #JavaEvolved

String.repeat() | java.evolved

Repeat a string n times without a loop.

javaevolved.github.io
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☕ Optional.ifPresentOrElse() Handle both present and empty cases of Optional in one call. if/else on Optional → ifPresentOrElse() (JDK 9 ) 🔗 javaevolved.github.io/stream… #Java #JavaEvolved

Optional.ifPresentOrElse() | java.evolved

Handle both present and empty cases of Optional in one call.

javaevolved.github.io
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☕ Math.clamp() Clamp a value between bounds with a single clear call. Nested min/max → Math.clamp() (JDK 21 ) 🔗 javaevolved.github.io/dateti… #Java #JavaEvolved

Math.clamp() | java.evolved

Clamp a value between bounds with a single clear call.

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☕ Guarded patterns with when Add conditions to pattern cases using when guards. Nested if → when Clause (JDK 21 ) 🔗 javaevolved.github.io/langua… #Java #JavaEvolved

Guarded patterns with when | java.evolved

Add conditions to pattern cases using when guards.

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java.evolved – Every old Java pattern next to its modern replacement, side by side. javaevolved.github.io

java.evolved Code Snippets | java.evolved

A collection of modern Java code snippets. Every old Java pattern next to its clean, modern replacement — side by side.

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