Software Engineering

689 learners

Mastering Functional Interfaces

This course will introduce you to the powerful concept of functional interfaces in Java. You'll learn how to use these interfaces effectively, leveraging lambda expressions to create clean and efficient code.

Java

See path

4 lessons

20 practices

3 hours

Computer Science Fundamentals

Course details

Introduction to Functional Interfaces

Preview

Functional Interfaces in Action

Switching to BiFunction

Fixing Function Chain

Complete Salary Calculator

Student Grade Calculator using Functions

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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

Mastering Functional Interfaces

Course details

Unit 15 practices38 min

Unit 25 practices38 min

Unit 35 practices38 min

Unit 45 practices38 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community