Transform your Java applications by connecting them to the world! This learning path equips you with essential skills for API integration—from crafting HTTP requests to implementing secure authentication and building robust test suites.

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Course 1

Basics of HTTP Requests with Java

5 lessons

19 practices

In this course, you will learn how to interact with APIs using Java. By the end of this course, you’ll understand how to make GET, POST, PUT, PATCH, and DELETE requests to an API, interpret API responses, and perform basic operations like creating, reading, updating, and deleting resources.

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Course 2

Efficient API Interactions with Java

4 lessons

Course 3

API Authentication Methods with Java

4 lessons

Course 4

Automating API Tests with Java

4 lessons

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

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

In this course, you will learn how to handle common scenarios when working with APIs in Java. You’ll explore how to manage errors effectively, work with file uploads and downloads, handle paginated API responses, and use headers effectively. By the end of this course, you’ll have a deeper understanding of practical API techniques.

In this course, you will learn how to work with various API authentication methods using Java. You’ll explore the basics of API Key authentication, manage sessions using cookies, and interact with APIs using JSON Web Tokens (JWTs). By the end of this course, you’ll be able to access and interact with protected APIs securely.

Build reliable API test suites using JUnit in Java. By the end of this course, you'll be able to set up test cases, make API requests within tests, assert expected outcomes, handle different testing scenarios including CRUD operations and authentication mechanisms. This will help you ensure the reliability and functionality of APIs effectively.