Java - Key Features in Last few LTS Releases

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Java - Key Features in last few Long term support release.

Java-8
  • Lambda expression
  • Stream API
  • Date & Time API (java.time)
  • Optional Class for null handling
  • Default & Static Interface Methods

Java-11
  • HTTP Client Standard (For RestAPI call)
  • Local Variable Syntax for Lambda Parameters
  • String Improvements
  • Optional HTTP/2 Client

Java-17
  • Sealed Classes and Interfaces
  • Pattern Matching of Instance of
  • Records
  • Switch - Case expression (Enhanced)
  • Removed Experimental AOT and JIT compiler

Java-21
  • String Templates (Preview)
  • Sequenced Collections
  • Pattern Matching for Switch & Records
  • Virtual Threads
  • Foreign Function & Memory API (Incubator)

Java 22
  • Unnamed Variables & Patterns
  • Statement before super (...)
  • Streams for Primitive Types
  • Statement Templates (Preview)

Java-25
  • Primitive Types in Pattern Matching (Enables pattern matching with primitive in switch and instanceof)
  • Module Import Declarations (Allow import module syntax for better modularity)
  • Flexible Constructor Bodies (More expressive constructor definitions)
  • Compact Source Files (Simplifies syntax for small programs)
  • Instance Main Methods (Enables main method in instance of class)
  • Scoped Values: A production feature that allows thread local like data sharing across method chain
  • Structured Concurrency: Simplifies concurrent programming by treating multiple tasks as as single unit
  • Virtual Thread Enhancements: Improvement to Project Loom's virtual thread for lightweight concurrency
  • Ahead-of-Time method profiling: Optimizes performance by profiling methods before runtime
  • JFR CPU Time profiling on Linux: Enhances JDK flight recorder to capture CPU time usage
  • PEM Encodings for Cryptographic Objects: Easy API for encoding/decoding keys and certificates in PEM format
  • Key Derivation Function API: Adds support for secure key derivation mechanisms
  • Stronger TLS Defaults: Improved default security configurations
  • GC Improvements: Enhancements to low-pause garbage collection
  • Compct Object Headers: Reduces memory foot print of java objects
  • Improved Memory Management: Better heap usage and allocation strategies
  • Stable Values API: Immutable value holders for safe sharing
  • Vector API Enhancements: Improved SIMD operation for high performance computing
  • Improved Date/Time Handling: More intuitive APIs for temporal data
  • Better Stream Debugging Tools: Easier inspection of stream piplelines
  • JFR Cooprative Sampling: More efficient sampling in flight recorder
  • JFR Method Timing and Tracing: Detailed method level performance insights
  • Command Line Ergonomics: Simplified CLI options for developers
  • Removal of 32 bit x86 Port: Focuses on modern architectures
  • Deprecated Legacy APIs: Clean up outdated APIs for better maintainability

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