Modern Java - Learn Java 8 features by coding it - Udemy

Learn the new Java 8 Features by coding it. This is a pure coding course and you will get a complete understanding of all the Java 8 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 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 12: 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: New Date/Time Libraries

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

• How to create/edit the LocalDate,LocalTime and LocalDateTime instances using different approaches.

• 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.

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