How To Call a REST API In Java - Simple Tutorial

Full tutorial on how to call REST APIs in Java!

Calling REST APIs can be intimidating to a Java beginner. This tutorial will walk through all of the aspects of a REST call in detail, then walk through step by step how to code your RESTful calls in Java!

If you're confused by RESTful calls, either in general or how to code them in Java, you're in the right place!

Learn or improve your Java by watching it being coded live!

Hi, I'm John! I'm a Lead Java Software Engineer and I've been in the programming industry for more than a decade. I love sharing what I've learned over the years in a way that's understandable for all levels of Java learners.

Let me know what else you'd like to see!

Links to any stuff in this description are affiliate links, so if you buy a product through those links I may earn a small commission.

📕 THE best book to learn Java, Effective Java by Joshua Bloch

📕 One of my favorite programming books, Clean Code by Robert Martin

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Phone I use for recording:

Microphone I use (classy, I know):

Complete Java course:

[pesterenan]

I'm impressed. You just taught the basics of REST API concepts, and then showed how to basically build the app from the ground up, while also mentioning several "complicated" topics, but in a simple and understandable way. I loved it! Already subbed!

[hackersmethod]

@John.... Why don't you make video's on Spring boot?It would be really helpful for us

[faizalimuhammadzoda]

I've learned a lot from this video. I have learned a lot from this channel ever since I subscribed to it. Thanks, John, for delivering such a good content for free. It really makes an impact on lives of so many people. This is the definition of equality of education. And thanks Youtube for being a platform which makes these things happen.

[FreeedCT]

You have such an amazing Talent to break complicated stuff down in an easy understandable way. I showed some of your Videos my co workers and we all agreed that for example your Lambda Video was More understandable than everything we heard until that video. Same goes for this amazing api Tutorial. Thank you so much !!!

[shahidanwar]

How you make everything so simple, you are brilliant.👏

[ShubhamKumar-idsm]

Finally. Can you please make more tutorials on API?

[michaelmihov]

John, you sound like a professor to me. Clean and concise, exactly what I needed. Thanks a lot buddy!

[Versole]

What a concise, direct, easy to underestand without self-promoting video? This should be the standard for coding tutorials.

[vasilapostolov]

Now this a video that you can easy understand the REST API !!! The examples are pretty easy to understand and right on the point. I watch all of yours video keep the good work. We need a university teachers like you !!!

[rubsrubs]

The best programming tutorials on YouTube! Thanks!

[yolandasandoval]

Finally I found someone who explain java topics simply but thoroughly. I beg you to explain Dependency Injection the way you do, Im sure I'll be more clarify than I am right now with you tutorials and exposition method. Thank you very much ... My best regards from Chile

[kalahaker]

Hayyyy...don't dislike it man...if you are mature enough to understand what he is delivering us then i am 100% sure that you are not going to dislike it. Thank you @John for providing us this kind of great guidance.

[matthewsalas]

This may be the most helpful video I have ever watched on youtube. Hats off.

[kybkap]

Sir your way of teaching is legendary. Unfortunatley most of your videos are about core java.
I hope you make more practical developing courses with different tools like this one.
Thnx!

[wannabeprogrammer]

Crystal clear explanation of the concepts. This exactly align with what we do in our day to day office work. Thank you John and keep making these kind of videos. 👏🏼👏🏼👏🏼

[micleh]

This would make a fascinating project for my computer science courses (students aged 16-18). I wished the government provided such APIs (like the ones you present here by AssemblyAI) for us to tinker with.

[DigitalAstronautOG]

I am not exaggerating when I say I started looking into REST just two days ago! It’s almost like you’re reading my mind 😳 Fantastic tutorial and timing!!!

[JordiMartinez-twhl]

Hello John, first of all wanted to thank you. I love your videos, it is the best I found on Youtube to learn Java.

Could you make a video on how to actually code the REST API? I think it is really useful and a lot of people will be interested.

Other topics which I would love to learn about are:
-Docker
-Database Connection
-CLI apps

Thank you!

[anlerylmaz]

You really are a great teacher besides being a developer. I am grateful to you, and considering myself lucky to watch your videos freely.

[x]

Excellent. Took me a few hours of wrestling with Maven to get Gson working, but eventually I wore it out, and everything works great now. Thanks for a clear and simple explanation of all the concepts. New fan.