Java Streams API Developer Guide from Udemy

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

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

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.

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

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

Show steps

This will help you to connect with other Java developers and learn about new technologies.

Browse courses on Java

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Find a Java Meetup in your area.
Attend the Meetup.
Talk to other Java developers.

Stream API Practice

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Get a headstart and refresh your knowledge of Streams prior to starting the course

Browse courses on Java Streams

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Review the Java Stream API documentation
Practice using Streams with simple examples
Solve simple coding challenges using Streams

Review Java Syntax

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This will help you to refresh your knowledge of Java syntax and prepare for the course.

Browse courses on Java

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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

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This will help you to learn from experts and stay up-to-date on the latest Java technologies.

Browse courses on Java

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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

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Gain a deeper understanding of Streams by exploring online tutorials and articles

Browse courses on Java Streams

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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

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Reading this book will help you to understand and remember the key concepts of Java.

View Head First Java: A Brain-Friendly Guide on Amazon

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Read the first three chapters.
Do the exercises at the end of each chapter.
Create a simple Java program.

Stream API Study Group

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Enhance your learning by collaborating with peers in a study group focused on Stream API

Browse courses on Java Streams

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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

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Sharpen your Stream API skills by solving coding challenges

Browse courses on Java Streams

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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

Show steps

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

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Apply your understanding of Streams by creating a project that uses Streams to solve a real-world problem

Browse courses on Java Streams

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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

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This will help you to learn about open source development and how to contribute to the Java community.

Browse courses on Java

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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

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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

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Solidify your understanding of Stream API by mentoring junior developers

Browse courses on Java Streams

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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

Show steps

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

Show steps

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.

See salaries and explore the career path for Software Developer

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.

See salaries and explore the career path for Data Engineer

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.

See salaries and explore the career path for Software Architect

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.

See salaries and explore the career path for Business Intelligence Analyst

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.

See salaries and explore the career path for Principal Software Engineer

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.

See salaries and explore the career path for Quantitative Analyst

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.

See salaries and explore the career path for Solutions Architect

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.

See salaries and explore the career path for Data Scientist

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.

See salaries and explore the career path for Data Architect

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.

See salaries and explore the career path for Chief Technology Officer

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.

See salaries and explore the career path for Data Analyst

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.

See salaries and explore the career path for Database Administrator

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.

See salaries and explore the career path for Statistician

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.

See salaries and explore the career path for Computer Systems Analyst

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.

See salaries and explore the career path for Machine Learning Engineer