Core Java Streams: Master Map and Reduce Operations โ€” WalkSelf
โฑ 2h 54m ๐Ÿ“š 29 lessons ๐ŸŽง Audio version

Core Java Streams: Master Map and Reduce Operations

Learn to efficiently transform and aggregate data using Java's powerful Stream API, empowering new developers to write concise and expressive code.

  • ๐Ÿ’ฌ AI instructor
    Ask about any lesson and get a clear answer instantly, anytime.
  • ๐Ÿ• Start anytime
    No schedules or deadlines โ€” learn at your own pace, whenever suits you.
  • ๐ŸŒ In English
    Lessons, tasks and certificate โ€” all fully in your language.

About this course

Java's Stream API offers a powerful way to process collections, but `map` and `reduce` can seem daunting at first. This course demystifies these essential operations, making functional data manipulation accessible. By mastering `map` and `reduce`, you will confidently transform, filter, and aggregate data, writing cleaner, more efficient, and expressive Java code. What you'll learn: * Understand the fundamental principles and benefits of Java's Stream API. * Apply `map` and `flatMap` operations to transform data within streams. * Master various `reduce` operations for powerful data aggregation. * Utilize functional interfaces and method references for concise stream expressions. * Practice building efficient and readable stream pipelines for common tasks. * Identify and resolve common issues when working with stream operations. The course starts with the core concepts of the Stream API and the functional programming paradigm, then delves into detailed explanations of `map`, `flatMap`, and `reduce`, supported by numerous practical code examples and exercises. This course is ideal for beginner Java developers who want to learn how to process collections effectively using modern functional programming patterns and the Stream API, with no prior experience with streams required. Begin your path to writing more elegant and powerful Java code today.

What you'll get

  • ๐Ÿ“œ Certificate of completion
    Add it to your LinkedIn profile
  • ๐Ÿ’ฌ Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • ๐ŸŽง Audio version included
    Learn on the go โ€” no screen needed
  • โ™พ๏ธ Lifetime access
    Come back anytime, no expiry
  • ๐Ÿ“ฑ Phone or computer
    Works anywhere, any device
  • ๐Ÿ’ธ 14-day refund
    No questions asked
  • โšก Short & focused
    2h 54m of practical content

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We donโ€™t store card details โ€” Stripe handles them securely.

Can I get a refund? +

Yes โ€” full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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