Java 8 Features with Real Time Examples | Java 8 Features in Depth

Java 8 introduced groundbreaking features including Lambda Expression, functional interfaces, Streams API, default methods, method references, Optional class, Date and Time API, and the Nashorn JavaScript Engine. With lambdas and functional interfaces, developers can write concise and expressive code. Streams enable efficient processing of collections, while default methods allow interface evolution without breaking existing implementations. Method references simplify code reuse, and the Optional class helps handle null values more effectively. The Date and Time API provides a modern approach to date and time manipulation. Additionally, the Nashorn JavaScript Engine allows seamless integration of JavaScript code into Java applications.

Java 8 New Features

Feature	Description	Explanation
Lambda Expressions	Functional programming constructs to enable writing more concise and expressive code.	Lambda expressions allow you to write shorter and more readable code, especially when working with functional interfaces and collections.
Functional Interfaces	An interface with a single abstract method, used as the basis for lambda expressions and method references.	Functional interfaces enable the use of lambda expressions and method references, making it easier to work with functional programming concepts in Java.
Method References	A shorthand notation to refer to methods or constructors using their method signature.	Method references provide a concise way to refer to methods, improving code readability and reducing boilerplate code.
Stream API	A new abstraction to process collections of data in a functional and declarative way.	The Stream API provides a fluent and expressive way to perform operations like filtering, mapping, and reducing on collections, leading to more efficient and readable code.
Date and Time API	An improved API for working with dates, times, and time zones.	The new Date and Time API introduced classes like LocalDate, LocalTime, and ZonedDateTime, which are more robust, immutable, and easier to work with compared to the older Date and Calendar classes.
Default Methods	Allow interfaces to have method implementations.	Default methods enable backward compatibility by allowing the addition of new methods to interfaces without breaking existing implementations.
Static Methods	Allow interfaces to have method implementations.	Static methods, also known as class methods, are methods that belong to a class rather than an instance of the class.
Optional	A container object to represent the presence or absence of a value.	The Optional class promotes more robust code by explicitly handling the cases where a value may be present or absent, thereby reducing the occurrence of NullPointerExceptions.
Parallel Streams	Enable parallel processing of collections using multiple threads.	Parallel Streams allow for concurrent execution of operations on large collections, leveraging the power of multi-core processors and improving performance for certain use cases.
CompletableFuture	A flexible and powerful framework for asynchronous programming and handling future results.	CompletableFuture allows developers to write non-blocking, asynchronous code with support for composition, chaining, and exceptional handling.
Base64 Encoding and Decoding	Built-in support for encoding and decoding data in Base64 format.	The Base64 API provides convenient methods for encoding and decoding data in Base64, eliminating the need for external libraries or custom implementations.
IO Enhancements	enhancements to the I/O (Input/Output) APIs, making it easier and more efficient to work with input and output operations in Java applications.	The I/O enhancements in Java 8 provide significant improvements to the Java I/O APIs, making it easier and more efficient to work with input and output operations.
Concurrency Enhancements	enhancements to the concurrency utilities, making it easier and more efficient to write concurrent and parallel code in Java applications. These enhancements improve performance, simplify development, and provide additional flexibility in handling concurrent operations	The concurrency enhancements in Java 8 make it easier and more efficient to write concurrent and parallel code. The CompletableFuture class, parallel streams, Spliterator interface, and specialized classes like LongAdder and LongAccumulator provide developers with powerful tools for handling asynchronous computations, parallel processing, and shared counters in a concurrent environment.
JDBC Enhancements	...	...
JavaFX	A rich set of UI controls and graphics libraries for building modern user interfaces.	JavaFX offers a powerful platform for developing visually appealing and interactive desktop and mobile applications.