Modern Java: Mastering Features from Java 8 to Java 21

Description


[ Major Update : Complete Course updated on December 2024 ]

Learn the new Java 8, Java ll, Java 17, Java 21 Features by coding it,This is a pure coding course and you will get a complete understanding of all the Java 8, Java ll, Java 17, Java 21 features by coding it

Why Should I take this course ?

  • This course will help the Java developers to build their knowledge on the new Java 8 features

  • All the new features such as Lambdas, Streams , Optionals, Functional Interfaces and Parallel Programming will be explained via code

  • This course will give you the confidence on implementing new Java 8 features in real Java projects

  • By the end of this course you will have a complete understanding of new Java 8 functional features

Course Overview :

Section 1 - Getting Started:

  • This section explains about what will be covered in this course

Section 2 - Why Java-8 ?:

  • This section covers Why Java 8 is important?

  • This section explains about difference between Imperative Programming and Declarative Programming

Section 3 - WorkSpace Setup - Mac/Windows:

  • This section covers the installation of Java and IntelliJ in Mac and Windows

Section 4: Introduction to Lambda

  • This section covers the Why Lambda is needed , Lambdas Syntax and How to implement Lambdas ?

  • Implement the Runnable interface using Lambdas

  • Implement the Comparator interface using Lambdas

Section 5: Lambdas and Functional Interfaces

  • This section covers the new Functional Interfaces that got introduced as part of Java 8

    • Consumer Functional Interface

    • Predicate Functional Interface

    • Function Functional Interface

    • Supplier Functional Interface

Section 6 : Constructor and Method References

  • This section covers the new Method Reference and the Constructor Reference

    • How Method Reference simplifies the code

    • How to use Method reference along with Lambdas

    • How to use Constructor Reference to create new objects

Section 7 : Lambdas and Local variables ( Effectively Final )

  • This section covers the local variable and how it should used in Lambdas

  • Definition of Effectively Final scope of a variable

Section 8 : Streams API

  • This section covers the Streams API which is one of the important feature that got introduced as part of Java8

  • How the Stream API Works Internally ?

  • How Collections are different from Streams ?

  • How to debug a Stream ?

Section 9 : Streams API Operations

  • This section covers different Streams API operations that can be used in Streams to achieve an objective

  • Streams Operations such as :

    • map()

    • flatMap()

    • distinct()

    • count()

    • filter()

    • reducer()

    • Map, Filter and Reduce pattern

    • max()

    • min()

    • limit()

    • skip()

    • allMatch(), anyMatch() and noneMatch()

    • findAny() and findFirst()

  • Explanation of Stream operations that are Short Circuit operations

Section 10 : Streams API - Factory Methods

  • This section covers different Streams API factory method that can be used to create Streams

Section 11: Numeric Streams

  • This section covers the Introduction to Numeric Streams which can be used to perform some numeric related operations

Section 12: Terminal Operations Streams

  • This section covers different way to collect the data from the Streams Pipeline

  • Terminal Operations such as :

    • joining()

    • counting()

    • mapping()

    • max(), min()

    • sum()

    • average()

    • groupingBy()

    • partitioningBy()

Section 13: Streams API - Parallel Processing

  • This section covers how to perform the Parallel processing using Streams

  • How Parallel Programming makes use of the processors in your machine to perform concurrency operations?

  • How Parallel Programming works internally ?

  • How to check the performance between the sequential and parallel programming ?

  • Scenarios when not to use parallel programming

Section 14: Optional

  • This section covers What is Optional and the benefits of Optional

  • How Optional can help you avoid Null Pointer exception

  • Exploring the different operations that are part of Optional such as :

    • empty()

    • ofNullable()

    • of()

    • orElse()

    • orElseGet()

    • orElseThrow()

    • isPresent()

    • ifPresent()

    • map()

    • flatMap()

    • filter()

Section 12: Streams API - Parallel Processing

  • This section covers how to perform the Parallel processing using Streams

  • How Parallel Programming makes use of the processors in your machine to perform concurrency operations?

  • How Parallel Programming works internally ?

  • How to check the performance between the sequential and parallel programming ?

  • Scenarios when not to use parallel programming

Section 13: Optional

  • This section covers What is Optional and the benefits of Optional

  • How Optional can help you avoid Null Pointer exception

  • Exploring the different operations that are part of Optional such as :

    • empty()

    • ofNullable()

    • of()

    • orElse()

    • orElseGet()

    • orElseThrow()

    • isPresent()

    • ifPresent()

    • map()

    • flatMap()

    • filter()

Section 14: New Date/Time Libraries

  • This section covers new Date/Time Libraries such as LocalDate, LocalTime, LocalDateTime

  • How to find the difference between the LocalDate, LocalTime and LocalDateTime using Period, Duration

  • How to represent the time in the Machine Readable Format using Instant

  • How to use the TimeZone using the ZonedDateTime

  • How to Format the Date using the DateTimeFormatter


Section 15: Local Variable Type Inference (LVTI) using var

  • In this section, we will code and learn about the LVTI feauture to simply local variable declaration using type inference.

Section 16: Text Blocks

  • In this section, we will code and learn about the TextBlocks which enhances the power of String in Java.

Section 17: Enhanced Switch

  • In this section, we will code and learn about the new Switch which is an expression.

    • Switch - as an Expression

    • Multiline switch expression using "yield"

    • Enhanced Switch are exhaustive

Section 18 : Records

  • In this section, we will code and explore the record classes concept in Modern Java.

    • Records Classes

    • Custom Constructors and Validations in Record Classes

    • Object Equality in Record Clases

Section 19  : Pattern Matching

  • In this section, we will code and learn about pattern matching.

    • Introduction to Pattern Matching

    • Record Patterns - Pattern Matching on Records

    • Guarded Patterns

Section 20 : ChekoutService Application [ Real Time Usecase]

  • In this section, we will implement a realtime application using all the modern java concepts that we have learned so far.

Section 21 : Simple Web Server

  • In this section, I will give you a demonstration of jwebserver and how it serves the files and folders as resources.

Section 22 : New Http Client

  • In this section, we will code and explore the new HTTP Client that has support for HTTP2/Websockets.

    • New HttpClient - GET Request to retrieve movie by ID

    • JUnit test for the HTTP Client

    • Build HTTPClient in Asynchronous mode

    • Build HTTP Client - GET Request to Retrieve AllMovies

Section 23 : Java Platform Module System (JPMS)

  • In this section, we will code and learn about how to build java application using JPMS or modules.

    • Introduction to JPMSBuild a Java app using JPMS

    • Working with Multiple Modules

    • Working with Multiple Modules - Transitively

    • Unnamed Modules and Automatic Modules


By the end of this course you will have a complete understanding of all the Java 8, Java ll, Java 17, Java 21  features and implement it in real Java projects


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