Java 8 | Java 11 | Java 17 | Java 21 Features with Programming Examples

Описание: Java 8 | Java 11 | Java 17 | Java 21 Features with Programming Examples

Java 8:
Lambda Expressions: Enables functional programming by allowing anonymous functions as arguments.
Stream API: Provides a powerful way to process collections of data in a declarative and functional style.
Default and Static Methods in Interfaces: Allows adding new methods to interfaces without breaking existing implementations.
Java Time API (JSR 310): A new, immutable, and thread-safe date and time API.
Optional Class: Helps in handling null values and avoiding NullPointerException.
Java 11:
HTTP Client (Standard): A new, modern HTTP client API supporting HTTP/1.1, HTTP/2, and WebSockets.
Local-Variable Syntax for Lambda Parameters: Allows var keyword in lambda parameters.
Epsilon Garbage Collector: A no-op garbage collector for performance testing and short-lived processes.
Flight Recorder and Mission Control: Tools for profiling and monitoring Java applications.
Java 17 (LTS):
Sealed Classes: Restricts which classes or interfaces can extend or implement them, enhancing control over inheritance.
Records: Provides a concise syntax for defining immutable data classes.
Pattern Matching for instanceof: Simplifies type-checking and casting.
Enhanced Pseudo-Random Number Generators: Introduces new interfaces and implementations for random number generation.
Java 21 (LTS):
Virtual Threads (Project Loom): Lightweight threads designed to improve the performance and scalability of concurrent applications.
Sequenced Collections: Introduces new interfaces for collections with a defined encounter order.
Record Patterns: Allows destructuring of record components in pattern matching.
Pattern Matching for switch: Extends pattern matching capabilities to switch expressions and statements.
Foreign Function & Memory API (FFM API): Provides a way to interact with native code and memory more safely and efficiently.

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