Software Engineering

836 learners

Projection, Filtering, and Aggregation of Data Streams

Focusing on data manipulation operations, this course teaches how to perform data projection, filtering, and aggregation using Java without needing advanced external libraries. You will learn how to use both procedural and functional programming techniques when applying filtering and aggregation on the data stream.

Java

See path

5 lessons

23 practices

3 hours

Computer Science Fundamentals

Course details

Understanding Data Streams in Java

Preview

Retrieve First Flight Record from Data Stream

Observing Behavior of the getLast Method in Java DataStream

Handling First and Last Elements in Data Streams

Implement SliceToString Method in DataStream Class

Returning the Middle Element of a Slice in a Java List

Previous Course Next Course: Practicing Intermediate Implementation and Data Streams

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I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

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It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Projection, Filtering, and Aggregation of Data Streams

Course details

Unit 15 practices38 min

Unit 25 practices38 min

Unit 35 practices38 min

Unit 44 practices32 min

Unit 54 practices32 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community