/Java-8-Stream-API

Primary LanguageJava

Java 8 Features Overview

This repository contains examples and explanations for the major features introduced in Java 8, organized into separate modules for better understanding.

Folder Structure and Features

L01_Lambda_Expression

This module introduces lambda expressions, enabling concise syntax for representing functional interfaces and anonymous methods. Lambda expressions simplify the development of functional programming constructs in Java.

L02_Functional_Interface

Focuses on functional interfaces, which are interfaces with a single abstract method. Includes the @FunctionalInterface annotation and explains their critical role in enabling lambda expressions.

L03_Method_References

Covers method references, which are a shorthand notation for lambdas to refer to methods or constructors. Includes examples of:

  • Static method references (ClassName::staticMethod)
  • Instance method references (instance::instanceMethod)
  • Constructor references (ClassName::new)

L04_Optional_Class

Explains the Optional class, a container object used to handle potential null values gracefully. Demonstrates methods like orElse, isPresent, and ifPresent to avoid NullPointerException.

L05_Default_and_Static_method_in_Interface

Details how Java 8 allows interfaces to include:

  • Default methods: Methods with a default implementation.
  • Static methods: Utility methods that can be called without an instance of the interface.

L06_Java8_Stream_APIs

Explores the powerful Stream API for processing collections and sequences of data in a functional style. Includes examples of:

  • Intermediate operations like filter, map, and sorted.
  • Terminal operations like collect, forEach, and reduce.

L07_BiFunction_BiConsumer_BiPredicate

Explores the utility of BiFunction, BiConsumer, and BiPredicate functional interfaces for handling operations involving two inputs. Includes examples of:

  • BiFunction: For applying a function to two arguments and producing a result.
  • BiConsumer: For performing an operation that accepts two arguments but returns no result.
  • BiPredicate: For evaluating a condition with two arguments and returning a boolean.

How to Use This Repository

Each folder contains:

  • Code Examples: Demonstrates how to implement and use the feature in real-world scenarios.
  • Documentation: Provides detailed explanations of the concepts and their applications.

Explore these features to harness the full potential of Java 8 for writing modern, concise, and efficient code.