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Nelson Jamal

Java 8 brought a lot great new features to the table. A lot people say, the community was late in bringing these features, but what often people dont realise is that brought these new features late but what they did exceptionally well was to implement them better than anyone and give us developers a wonder API to use, and one of the them was the Stream API.

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Java 8 brought a lot great new features to the table. A lot people say, the community was late in bringing these features, but what often people dont realise is that brought these new features late but what they did exceptionally well was to implement them better than anyone and give us developers a wonder API to use, and one of the them was the Stream API.

Before Java we wrote a lot code for simple logic and yet we could get it wrong very easily. Well this is not the case with Java 8 in particulate with Streams. With Streams we focus on coding and deliver what we indent rather than thinking of how we are going to code the logic to do what we intend. Streams focuses on the ALL instead of the PARTS. Streams not only focuses on the ALL but it also allows us to write functional style programming, and this is what makes Streams and the Java programming language very attractive to developers.

This course is packed with awesome sections that will take you the journey from from zero to hero. You will learn and understand what I call the

concrete > abstraction > concrete phase

and once you grasp this concept we will dive into the abstraction phase and learn awesome features such as

  • Map
  • Filter
  • Flatmap
  • Reduce
  • Average
  • Sum
  • Min
  • Difference between intermediate & terminal operations
  • And much more

Finally at the end of this course I will teach how streams work internally, their order of execution and the performance benefits they have to offer.

The best way to learn any concept is to learn and practice as you go along. So, I packed this course with plenty of exercise for you to challenge your to ensure you learn and start using functional programming with stream moving forward in you career as a Java software engineer.

I cant wait to see you inside.

Thaks

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What's inside

Learning objectives

  • Functional programming
  • Know how to use java streams api
  • Understand the benefits streams have to offer
  • Know how to use concrete > abstraction > concrete pattern
  • Gather stats from datasets
  • Deliver more features instead of focusing how to make code that works right.
  • Use streams to perform transformations using stream().map(...)
  • Learn awesome idea features

Syllabus

Introduction

In this lecture you will get to know me.

In this section you will learn how to download, install and configure Java Development Kit and Intellij IDEA.
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In this lecture you will install Java Development Kit.

In this lecture you will download Intellij IDEA. You will also install and configure google style code for better code formatting.

In this lecture you will configure Intellij and JDK 1.8. You will also run all test cases which will output to the console all the material to be covered in this course.

In this lecture you will learn the code base and how to switch between branches that have the completed and the staring point source code.

Lets get started

In this lecture you will learn what streams are and what problem they solve.

Imperative Approach Exercise

In this lecture you will learn how to solve problems using the imperative approach.

In this lecture you will learn how to solve problems using the declarative / functional style approach.

In this lecture you will learn how streams pipeline work and what I call the Concrete > Abstraction > Pattern.

In this section you will learn about IntStreams and how iterate over lists.
Iterating with IntStream (range and rangeClosed)
Exercise
Iterating through lists with IntStream (Exercise Solution)
IntStream.iterate
In this section you will learn how to use Streams to find min, max numbers using Comparators.
Finding min number
Finding max (Exercise Solution)
In this section you will learn various ways to remove duplicate numbers with Streams.
Removing duplicates in a List
Removing duplicates in a List with Collectors.
In this section you will learn to perform filtering using predicates and how to use the powerful stream operation that allows us to perform data transformations.
Filtering
Transformations with stream.map
stream.mapToDouble (exercise solution)
In this section you will learn the key differences between find any and find first.
stream.findAny
stream.findFirst
Understanding core difference between stream.findAny and stream.findFirst
In this section you will learn how to pull out various statistics from any dataset.
Counting
Min & Max without comparators
Calculating Averages
Summing up numbers (Exercise Solution)
Gathering Statistics with Streams
In this section you will learn how to group any dataset.
Grouping data
Grouping & Counting data
In this section you will learn how to use the famous reduce operation and how to flatten data out.
Reduce
Flatmap
In this section you will learn how to properly concat/join strings.
Joining Strings (PART) (Exercise Solution)
Joining Strings (PART 2)
In this section you will learn important concepts of Streams such Terminal and Intermediate operations, order of executions and lazy evaluations.
Understanding .collect(...)
Collectors and Multithreading
Intermediate & terminal operators and lazy valuation
The Order of how streams process data
Lets wrap up
Thank you

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Develops proficiency in functional programming and provides hands-on experience with Java Streams API
Led by instructors with extensive experience in the field of software development
Introduces the concrete > abstraction > concrete pattern, a valuable approach for understanding and implementing Java Streams
Provides comprehensive coverage of essential Java Streams operations, including map, filter, flatmap, and reduce
Emphasizes practical application, with exercises and challenges to reinforce learning

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Reviews summary

Streams api developer guide

This course has received overwhelmingly positive reviews. It does a great job of teaching Java Streams API step-by-step and is a great guide to getting started with functional programming. Students appreciate the exercises as well as the emphasis on concrete > abstraction > code pattern.

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Java Streams API Developer Guide with these activities:
Attend Java Meetups
This will help you to connect with other Java developers and learn about new technologies.
Browse courses on Java
Show steps
  • Find a Java Meetup in your area.
  • Attend the Meetup.
  • Talk to other Java developers.
Stream API Practice
Get a headstart and refresh your knowledge of Streams prior to starting the course
Browse courses on Java Streams
Show steps
  • Review the Java Stream API documentation
  • Practice using Streams with simple examples
  • Solve simple coding challenges using Streams
Review Java Syntax
This will help you to refresh your knowledge of Java syntax and prepare for the course.
Browse courses on Java
Show steps
  • Read through a Java syntax tutorial.
  • Take a Java syntax quiz.
  • Write a simple Java program.
12 other activities
Expand to see all activities and additional details
Show all 15 activities
Follow Java-related YouTube Tutorials
This will help you to learn from experts and stay up-to-date on the latest Java technologies.
Browse courses on Java
Show steps
  • Search for Java tutorials on YouTube.
  • Find a tutorial that interests you.
  • Watch the tutorial and follow along.
  • Practice what you've learned.
Explore Stream API Tutorials
Gain a deeper understanding of Streams by exploring online tutorials and articles
Browse courses on Java Streams
Show steps
  • Identify reputable sources for tutorials on Stream API
  • Follow along with tutorials and practice the examples
  • Experiment with different Stream operations and techniques
Review Head First Java
Reading this book will help you to understand and remember the key concepts of Java.
Show steps
  • Read the first three chapters.
  • Do the exercises at the end of each chapter.
  • Create a simple Java program.
Stream API Study Group
Enhance your learning by collaborating with peers in a study group focused on Stream API
Browse courses on Java Streams
Show steps
  • Form a study group with other students taking the course
  • Meet regularly to discuss course material, solve problems, and share knowledge
  • Provide support and encouragement to fellow group members
Stream API Coding Challenges
Sharpen your Stream API skills by solving coding challenges
Browse courses on Java Streams
Show steps
  • Find online coding platforms that offer Stream API challenges
  • Attempt to solve challenges of varying difficulty levels
  • Review solutions and learn from your mistakes
Practice Java Coding Challenges
This will help you to improve your Java coding skills and learn how to solve common programming problems.
Browse courses on Java
Show steps
  • Sign up for a coding challenge website.
  • Start with the easy challenges and work your way up to the more difficult ones.
  • Don't be afraid to ask for help or look at the solutions if you get stuck.
Stream API Project
Apply your understanding of Streams by creating a project that uses Streams to solve a real-world problem
Browse courses on Java Streams
Show steps
  • Identify a problem that can be solved using Streams
  • Design and implement a solution using Streams
  • Test and evaluate your solution
Contribute to a Java Open Source Project
This will help you to learn about open source development and how to contribute to the Java community.
Browse courses on Java
Show steps
  • Find a Java open source project that you are interested in.
  • Read the project's documentation.
  • Find a bug or feature that you can work on.
  • Create a pull request.
Stream API Coding Competition
Challenge yourself and test your Stream API skills in a coding competition
Browse courses on Java Streams
Show steps
  • Identify coding competitions that focus on Stream API
  • Prepare for the competition by practicing and studying
  • Participate in the competition and strive for success
Mentor Junior Developers in Stream API
Solidify your understanding of Stream API by mentoring junior developers
Browse courses on Java Streams
Show steps
  • Identify opportunities to mentor junior developers in Stream API
  • Provide guidance, support, and feedback to mentees
  • Share your knowledge and experience to help mentees grow
Write a Java Tutorial
This will help you to solidify your understanding of Java and improve your communication skills.
Browse courses on Java
Show steps
  • Choose a topic that you are familiar with.
  • Create an outline.
  • Write the tutorial.
  • Proofread your tutorial.
  • Publish your tutorial.
Create a Java Project
This will help you to apply your Java skills to a real-world problem.
Browse courses on Java
Show steps
  • Define the problem that you want to solve.
  • Research possible solutions.
  • Design and implement your solution.
  • Test your solution.
  • Deploy your solution.

Career center

Learners who complete Java Streams API Developer Guide will develop knowledge and skills that may be useful to these careers:
Software Developer
Software Developers work on the writing, debugging and maintenance of software. The Java Streams API Developer Guide is an excellent resource for those seeking to advance in a career as a Software Developer. This course covers topics such as functional programming, the concrete to abstraction to concrete pattern, differences between terminal and intermediate operations, and lazy valuation, all of which are valuable knowledge for a Software Developer to have.
Data Engineer
Data Engineers design, construct, manage, and maintain the infrastructure used in the storage and processing of data. The Java Streams API Developer Guide teaches skills that are foundational for any Data Engineer to have. The course includes sections on topics such as intermediate and terminal operations, flatmaps, and lazy valuation, all of which are critical knowledge for a Data Engineer to have.
Software Architect
Software Architects analyze the overall architecture of software systems, and may design and implement new solutions. The Java Streams API Developer Guide can serve as a helpful resource for individuals in this role, with sections on topics such as the concrete to abstraction to concrete pattern, defining and using intermediate and terminal operations, and working with IntStreams to iterate through lists.
Business Intelligence Analyst
Business Intelligence Analysts analyze data to provide organizations with insights. The Java Streams API Developer Guide can help build a foundation for Business Intelligence Analysts. The course includes sections on topics such as filtering, transformations, performing calculations, and grouping data, all of which are valuable skills for a Business Intelligence Analyst to have.
Principal Software Engineer
As senior-level software engineers, Principal Software Engineers lead teams in the design and development of software systems. The Java Streams API Developer Guide can be helpful for those in this role. This course includes sections on topics such as functional programming, identifying and using intermediate and terminal operations, and working with IntStreams to iterate through lists.
Quantitative Analyst
Quantitative Analysts apply complex mathematical and statistical techniques to data to evaluate risk, develop models, and optimize portfolios. People in this role need to have a strong understanding of data structures and algorithms, which are taught in the Java Streams API Developer Guide.
Solutions Architect
Solutions Architects design and implement technical solutions for organizations. The Java Streams API Developer Guide offers helpful knowledge for those working as Solutions Architects. This course teaches how to use streams to perform transformations, calculate statistics, and apply various mathematical operations to data, all of which can be helpful for a Solutions Architect to know.
Data Scientist
Data Scientists analyze and interpret very large and complex datasets to extract meaningful insights. Knowledge of how to work with Java streams is helpful for a Data Scientist to have. The Java Streams API Developer Guide covers topics such as statistical analysis, min and max operations, and gathering various statistics from datasets.
Data Architect
Data Architects design and implement data management solutions, with a focus on the organization of data. The Java Streams API Developer Guide may be useful for those in this role. This course covers topics such as working with list data structures, performing filtering and transformations, and gathering statistics, all of which can be helpful for a Data Architect to know.
Chief Technology Officer
Chief Technology Officers oversee the technology strategy and vision for an organization, as well as making technology decisions. The Java Streams API Developer Guide can be a useful resource for CTOs. This course covers topics such as defining and using intermediate and terminal operations, working with IntStreams to iterate through lists, and gathering statistics from datasets, all of which can be helpful for a CTO to have knowledge of.
Data Analyst
The Java Streams API Developer Guide teaches the concepts and techniques used to work with data in Java using streams, which can greatly help Data Analysts. This course includes sections on gathering statistics from datasets, which is an important skill for Data Analysts to have.
Database Administrator
Database Administrators are responsible for the maintenance and administration of an organization's database systems. Familiarity with Java streams can be helpful for a DBA to have, and the Java Streams API Developer Guide can serve as an excellent foundation. It includes sections on topics such as working with list data structures, concatenating strings, and lazy valuation, all of which are relevant for DBAs.
Statistician
Statisticians apply mathematical and statistical techniques to data to solve real-world problems. The Java Streams API Developer guide may be a useful resource for those interested in this career path. Sections on topics such as min and max calculations, as well as performing averages and sums, can help Statisticians get started in working with Java streams in their daily work.
Computer Systems Analyst
Computer Systems Analysts research, analyze, design and implement computer systems. The Java Streams API Developer Guide can be helpful for those pursuing this career. This course includes sections on working with datasets, performing filtering and transformations, and gathering statistics, all of which are helpful knowledge for a Computer Systems Analyst to have.
Machine Learning Engineer
Machine Learning Engineers need to build and manage machine learning models, and the Java Streams API Developer Guide may be helpful to those in this role. This course can help ML engineers learn to use Java streams in their daily work.

Reading list

We've selected 18 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Java Streams API Developer Guide.
A classic text on Java programming, covering a wide range of topics from basic syntax to advanced concepts.
A practical guide to Java streams, covering a wide range of topics from basic concepts to advanced techniques.
Provides best practices in Java. Although not a focus in the course concepts, you will find it helpful for your Java development.
Dieses Buch bietet Best Practices für Java und ist eine wertvolle Referenz für Entwickler, die ihren Java-Code verbessern möchten.
A step-by-step guide to lambda expressions in Java 8 and how best to leverage them for functional programming.
Introduces Java programming concepts (including Streams). It good book for both beginners and experienced developers.
Dieses Buch eignet sich hervorragend, um das Programmieren in Java zu erlernen. Es deckt die Grundlagen der Programmierung ab, einschließlich der Verwendung von Streams.
Will help you strengthen your understanding of Java. It is more of a supplemental reference to support the depth and breadth of Java.
Good reference to learn more about Functional Programming in Java. Specifically, it's helpful for learning about how to use Streams for concurrency and parallelism.
Dieses Buch richtet sich an erfahrene Java-Entwickler und bietet Einblicke in fortgeschrittene Themen wie Streams und funktionale Programmierung.
Good way to learn functional programming in Java. Although not a focus of the course, it will give you a good background and a conceptual understanding of the approach.
A comprehensive introduction to Java programming, suitable for beginners and experienced programmers alike.
Provides a deep dive into the Java Collections Framework. It is helpful for learning the options available for data manipulation, transformation and storage.

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