How To Debug Java Code The Right Way - Eclipse Debugger Full Tutorial
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- เผยแพร่เมื่อ 3 ก.พ. 2025
- How To Debug Java Code The Right Way With The Eclipse Debugger
Full tutorial on using the Eclipse Debugger!
Do you still just use print statements everywhere to debug your Java code?
Many beginners don't know there's a MUCH better way to debug their Java programs, and it's built into Eclipse and every other modern IDE.
The Eclipse debug tools make debugging your Java programs incredibly simple and (dare I say it) even fun.
In this beginner's Java tutorial video, we'll do a full walkthrough of using the Eclipse Debugging tools.
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.
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It's a shame that debugging isn't usually explained or taught in most courses even though it's one if not the best tool a developer has. It's a good thing that people like you make videos about this to let learners know about it. I want to share a little tip with everyone: you can use a conditional breakpoint to execute whatever piece of code you like, for example automatically edit a variable's value instead of doing it yourself everytime or log something with a print without even touching the code
its a shame. JS HASSSS NO DEBUGGGERRRR
@@tibettenballs4962 it kinda does, any browser should have the dev tools, you have to find your js file in the sources tab and do the debugging thing there. Otherwise for IDEs you can attach the process which is kinda like the first option but you do all the debugging from the ide window
@@ylananderson6291 still sucks, no matter how you package it
I hope someday I can do this, right now as a beginner I couldn't... :(
I’m in my second year of computer science classes and they’re just now showing us how to use a debugger. They really should show us this stuff earlier. It would have been sooo helpful.
I am coding in Java for 2 years and I always used print Statements to Debug. You just changed my entire life with that Video.
Thank you very much. I had been programming for over 7 years without using the debug mode. Even after all tge experience, I always learn something new from your videos.
Hi John, I've recently start studding coding, computers were my passions since ever, and now I've made the jump and pretend to quit from my job and do this for full time, also recently I've discovered your channel, is a huge pool of knowledge and inspiration for me, some topics are still out of my reach as a new student, but i can appreciate the value of this videos, soon some of them would become gold for me.
So congratulations for your efforts, it,s something big, and just want to cheer you up!! i will keep having and eye on your videos even if still cant follow every topic. Thanks!!
I honestly learnt a lot from this video John.
I’ve spent nearly an hour and a half trying things with you and experimenting.
PS I was one of the ones that throw print statements everywhere and it kinda gets messy most of the time hahah so thank you!
Hey John, thanks a ton for your videos! I am currently an online student pursuing a bachelors in software development and your videos are better than the etexts they use at school. They really make learning Java much easier! I especially love this one and your videos on sorting, but I haven't made it through this series yet and can't wait too. Thanks again and please keep them coming!
I agree with you, watching his video made more sense than the live lecture 😅
I have more than 6 years of experience in java, but every time I watch your video, I learn new things :)
That’s so funny because I did put print statements throughout my code to figure it out 🤣🤣🤣
You're not the only one!
Same here, and I thought I was being so clever. 😑
We all did
The fastest way to debug for me still
I do the same even after watching this video 😂
Thanks for the tutorial. I knew most of it except for the conditional breakpoint. I used to help myself by creating dummy if-clauses to check for the condition. Very helpful, especially for beginners!
At the moment as far as I looked at TH-cam, this is the only one Chanel where you can fully understand what he is talking about. Even if you are new to programing.
Thank you verry much for the amazing content and your clean way to explain this amazing things to us! 😇😇😇
Its been a week since I have been one of your videos on my lunch break. Learning something new everyday.
Thank you John. This is the first video i am watching to learn how to debug java code and i think i dont have any other video. It is that clear.
John,
You are a great communicator. Clear, concise and succinct. This was very helpful. Have a great day!
I wish I'd learned the art of debugging much earlier. But now I understand how limited print statements are. Better late than never. Thank you for this amazing video ❤.
Juniors learning from seniors and seniors sharing their experience with juniors- this is how we progress...
Man, i was using prints all this time
I learned a lot from this video, thank you very much
You genuinely changed my life. I will save so much time, this feature is so rich, and the fact you can manipulate state and re-express and track those expressions... game changer... thank you
Someone give this man a medal. Thank you so much for this.
A new thing I learned from here is the conditional break point. Awesome video. Thanks to John.
One of the most informative, specific and thoughtful video on debugging in Eclipse, thanks a ton John. Keep up the great work.
Thank you so much.
I have been working as a Java developer for 8 years but I learnt a lot in this tutorial.
Hi John, I am a beginner in java and I want to thank you for those videos, they are so helpful. I did learn a lot so from you. cheers.
Awesome, I'm glad the videos help! Thanks for watching!
Awesome! Really compact video for understanding the basics. I am working with intelliJ and always got confused with tutorials on debug mode. Thanks!
A tutorial like this on refactoring would be nice, too 🙂
It is the best video on this topic on TH-cam. Thanks for your efforts!!
Thanks!
It looks like you also used to make tutorials here on TH-cam (that got TONS of views by the way!) but haven't for a few years. I'm curious, is there a reason you stopped?
@@CodingWithJohn Thanks for reply. Yes, I made videos on 4G. But now changed my domain to full stack developer so learning few basics 😀
Perfect! Now I can save so much time debugging my programs. Thank you!
How did i not know that this thing exists.... this makes my life sooo much easier, thank you
Hi John, as usual, well-explained and fun to watch. Thanks for taking the time to prepare and present the videos.
Could you perhaps do one on streams... ? Thank you
For a while i've been guilty of using the sysout method because i found the debug tool a bit confusing, but this has upped my game. thanks!
The fact that I watch your videos just for entertainment and to learn even though I'm not working on a specific task, makes you no less than a great content creator! please keep it up!
Bro. You are doing awesome job bro.. thank you so much.. if all the tutors are really concise and give the proper content in minimum time means it will good. I am sure there are some people who will take one hour but they will not give the content which given by you in 5 mins..
That's why you are awesome by saving our time and giving a knowledge
Great explanation on how to debug. I've needed this for quite a while. Many thanks.
This is remarkably well explained, and truly enjoyable. The best among all technical videos I've watched.
Great! This really help me today to find an annoying bug in my little program! Thanks sir! You earned a new subscriber! cheers!
This channel is a gold to me, John Rocks!
Quite excellent. While watching I had some "Yeah, but" or "but what about?" moments and I can say that by the end of the video you quite literally covered all of them.
Many larger places with more legacy code might have painted themselves into a corner with Eclipse dependencies. I am going to very soon find out for my next/current work environment, but I've worked at least two places where you pretty much were forced to use Eclipse for various reasons, grumbling about how your favorite IDE was better and more productive was optional.
Yep, the comment I've received the most here was, "Why not IntelliJ?" Although I mainly use IntelliJ, I had assumed most newer learners tended to use Eclipse, but that may not be the case anymore. So I'm planning to do a subscriber poll soon to try and get an idea of the most used IDE, and might end up making a switch for future videos.
@@CodingWithJohn ..from the first year in university we were told to use intellij because it's more commonly used in the industry nowadays. But here in TH-cam most of the guys I have seen use eclipse so I don't really know how true is that..
Tbh it really doesn't matter cause they have mostly the same functionality imo..
Best Debugging Video available on TH-cam. I love the way you covered every scenario which can come in real life.
Keep bringing the good content. ❤️
I am new to Java, but quite good at a few other programming languages. I've been so lazy to learn the conditional breakpoint that I've modified my source codes instead to create the condition. Now that you showed it in such a quick step, I feel quite dumb :-). Thanks for the helpful video!
Thank god I found this video, this is extremely helpful. Thank you so much John, I love all of your videos :)
debugging by eye and prints can break a new inexperienced programmer, or at least hinder. this kind of debugging tool is so much help.
John, your videos are probably the most helpful ones I came across. Thank you!
Really great job with this video!! I can't explain how life changing some of this information is. I was wondering John, at some point in the future would you be willing to do code reviews occasionally? It could help with content, and personally I find myself at a standstill currently in my coding life. My friends and co-workers say my code is good, but I'd really appreciate an unbiased opinion. But, regardless, amazing job, thank you so much!
That's a very interesting idea! I can't guarantee anything, but if you would be willing to potentially have your code shared in a video, you can either leave your code here in the chat or email it to me (john@codingwithjohn.com), and I'll see if a code review for it might make a good format for a video that would be informative to others.
I made an incredibly large text based game a year ago, and I gave up on it because I got an error that I didn't understand. Stack Overflow didn't help me much either. Now I will go back and debug it with the tips you have given me here.
If you get an error you can't figure out again, post the code as a comment and see if I or someone here can help out!
These tips are very useful!! I didn't know about the conditional breakpoints.
Nice video!
Thank you! I needed this very clear explanations I've read the explanations from the internet, but this is better. Subscribed.
Thank you so much, John!
You're incredible!
I've never had such experience back in my school and University days. You make learning easy and fun ^^
P.S. We're missing the bloopers in the end, please bring them back! :3
I got so many things thanks to your video, I'm so grateful 🙏
This man has taught me more java than my school has in 3 semesters
Thanks, John! You're a fantastic teacher my friend.
Nice video, I was already aware about it except the conditional breakpoint, it will be going to help me a lot. Thanks John ☺️
Very lovely & useful tutorial ! It covers all the functionalities we need even when debugging very large projects with thousand of dependencies. Thanks a lot !
Best explanation ever as usual. Please make a Java Data Structure videos as well. I really need it
I just want to say thank you because your videos really helped me alot and i always enjoy watching them, and wish you all the best and great success you achieve this year and ahead. ❤️🙏🙏
Thank you so much, such an extremely helpful explanation of the Eclipse debugger!
Your explanation is clear and neat ! THANKS 🙏
Very clear to me. Thank you so much 👍. Please keep up your good work.
That was one hell of a video.Awesome man
You have explained in depth and I really enjoyed your video. Very well presented and informative.
I'm waiting for the next video, great job buddy, you explain very well and it's very easy to understand
You sir have your self a new sub! Thanks for the awesome tutorial. To the point, clear, easy to follow. 10/5 stars
Literally just opened up a whole new world for me.
Great tips to code like a pro. Debugging make it way easy. Like everyone said: Thanks a ton
Conditional Breakpoint was new for me .Thanks
You are a godsent, perfect timing.
Incredible video thanks a lot ! I wish my profs in university were half as clear and helpful as you are ! I learned a lot 🙏🏽
Really helpful explanation for the debugging process. Thanks John!
This is also good for looking at Java's built-in classes and methods.
Pure gold info, thank you John
Thanks a ton John!!.
this tutorial is amazing!
Thanks John, for another amazing video tutorial. Kudos to you for being such a great teacher. You do one of the best java explanations.
John, thanks for this awesome video. The best explanation of debugging. Really helpful 👍
Wow.... I came here to learn some simple breakdown of debugging. Now, I feel capable of debugging. 😎
Hey John ! Thank you very much for making a video on such an underrated topic.
Just a request, can you make detailed videos on java file system and multithreading.
thx for high quality video lecture john!
Hey John your videos about Java are the best. I have learned from you in these videos more than my teacher 😂. The only thing i havent yet understood is static vs nonstatic 😅. Can you do a video about it please. Either way thank you for your work.
Thanks! Static vs nonstatic was a big point of confusion when I was learning as well. I do have a video about it in the course, but might eventually have one on TH-cam as well. We'll see!
best video ever on whole internet MAN :)
Thank you great sir, your teaching has been the best for the quickest learning
I never eclipse IDE has these features , thank you for the clear and crisp explanation , can you do a video on how to setup eclipse IDE (best practices), TIA
Thanks John for sharing this type of information. very usefull.
Thanks a lot, great explaining as usual!
Thank you very much John, you're always the solutions to my problems
Hi John , Thanks for such a Tutorial .. It really helps in our day to day coding life ..
Looking forward to get session of Time and space complexity ..
Please take this up in your upcoming video
Nice Explanation, Thanks John , Keep it up.
Every video is just a briliant, Mr John can you shoot video about Java memory management? how objects are created and located in stack(references) and in heap, that will be very useful to fully understand how java works. thanks again for great videos
Great tutorial, thanks a lot!
Short and sweet. Weldone
Man, you are incredible 10/10
Thank you for this crash course
Your videos are really cool and understandable! 😃😃
Please make a video on What is annotation , Why we use Annotation? and
how can we make our own annotation? and
what is the purpose of using annotation!
Thanks alot. Finally i understand it much better
Thank you! You are the best! Helped me a lot
Brilliant Tutorial John, by the way I have similar glasses :))
Thanks a lot for the clear explanation :)
One more thing to add is the option to view static variables in the variables tab. By default it's not enabled so you have to enable it. Otherwise you'll wonder where your static variables are!
hi Mr John
P.S.: kuss
I come from Vietnam. Your video is very interesting
thanks! so helpful. wish my college class went over debugging lmao.
I appreciate the explanation. Thank you very much
thank you so much! you make learning very easy
Very cool and useful tool, and excellent video explaining it!
Great video, John!
My professor at UAlbany Michael Phipps made this video required viewing. You sir are now homework.