IntelliJ IDEA vs VS Code for Java: I Used Both for a Year
The IDE war nobody asked for but everyone has opinions about
Look, I don’t care which IDE you use.
Actually, that’s a lie. I care a lot. Because I wasted a year of my life switching between IntelliJ IDEA and VS Code trying to figure out which one wouldn’t make me want to throw my laptop out the window.
This isn’t a “VS Code is better because it’s free” take. And it’s not an “IntelliJ is worth it because enterprise” take either.
This is what actually happened when I used both for real production Java work. Spring Boot microservices. 50,000 lines of code. Real deadlines. Real bugs at 2 AM.
Spoiler: They both made me want to quit programming. Just in different ways.
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While writing this article, I realized this is actually one of the same recurring decisions I see engineers face over and over.
I’ve been collecting those patterns into a free reference called The Senior Backend Decision Map.
Twenty production, architecture, deployment, and interview decisions that tend to repeat throughout a backend engineer’s career.
How This Experiment Started (And Why It Was Dumb)
January 2024. New job. New codebase.
The team was split. Half used IntelliJ. Half used VS Code. Every code review turned into an IDE debate.
“Why didn’t you use the IntelliJ refactoring tool?”
“Because I don’t have IntelliJ.”
“Why not?”
“Because VS Code is faster.”
“Faster at what? Being worse?”
You get the idea.
So I decided to settle it. Six months with IntelliJ IDEA Ultimate. Six months with VS Code. Same projects. Same workflow. Same frustrated developer (me).
The only rule: use each one seriously. No half-assing it with minimal extensions or refusing to learn shortcuts.
What I learned? Both communities are cult-like in their devotion. And both are kinda right.
Month 1 with IntelliJ: The Overwhelm
First impression of IntelliJ IDEA Ultimate: holy hell, there are a lot of buttons.
Buttons everywhere. Tabs within tabs. Windows that pop up when you don’t want them. Settings nested seven layers deep like some kind of Russian doll nightmare.
I spent the first week just trying to figure out where everything was.
“Where’s the terminal?” Bottom left. No wait, bottom right. Actually it depends on your layout.
“How do I run this Spring Boot app?” Click the green triangle. No, the other green triangle. The one next to the main method. Or use the run configuration. You did set up the run configuration, right?
But here’s the thing: once you learn it, IntelliJ is stupid powerful.
The refactoring tools alone are worth the price. I’m talking about real refactoring, not just “find and replace.”
Want to extract a method? Right-click → Refactor → Extract Method. IntelliJ figures out the parameters, return type, and updates all call sites. Perfectly.
Want to rename a class? IntelliJ updates every reference across your entire project, including XML configs, YAML files, and even documentation comments.
VS Code can do this too, technically. But IntelliJ does it better. Consistently. Without weird edge cases where it misses a reference.
Before this incident, I assumed “the database will handle it.”
It won’t.
After debugging this and many similar failures, I condensed the patterns into a small reference I now keep open while building and debugging:
👉 SQL Performance Cheatsheet — The Query Mistakes That Kill Databases in Production
If this saves you even one production incident, it already paid for itself.
Spring Boot makes it very easy to build systems — and very easy to build fragile ones.
After repeatedly hitting the same problems, I wrote down the failure patterns and fixes I now use as my own reference:
👉 Spring Boot Production Cheatsheet — The Stuff That Breaks in Production (And How to Fix It)
Use it if you want to avoid learning these lessons the expensive way.
The Debugging Experience: Not Even Close
This is where IntelliJ absolutely destroys VS Code.
Debugging in IntelliJ feels like having X-ray vision. You can see everything. Evaluate expressions on the fly. Change variable values mid-execution. Step into library code without any setup.
Example: I had a bug in our payment service. Money was disappearing. Not great.
Set a breakpoint in IntelliJ. Run debug mode. Step through the code. Hover over variables to see their values. Evaluate transaction.getAmount() in the debugger console. Realize the amount is getting converted to cents twice.
Fixed in 10 minutes.
Same bug in VS Code? Possible, but slower. The debugger works, but it’s clunkier. You can’t just hover and evaluate complex expressions. The UI is less intuitive. More clicking, more confusion.
For simple bugs, VS Code is fine. For complex debugging sessions where you need to inspect object graphs, thread states, and database connections? IntelliJ is in a different league.
Spring Boot Integration: IntelliJ Wins (Obviously)
IntelliJ IDEA Ultimate has first-class Spring Boot support.
Not “we have extensions” support. Not “it kinda works” support. Full, native, deeply integrated support.
Type @Autowired and IntelliJ shows you exactly where that bean comes from. Click on a @RequestMapping and it shows you all the places that endpoint is called. Run the app and IntelliJ automatically detects it's a Spring Boot app and configures everything.
The Spring Boot run dashboard? Chef’s kiss.
You can see all your running Spring apps, their health status, endpoints, and logs. Restart services with one click. Switch between multiple Spring profiles without editing configs.
VS Code with Spring Boot extensions? It works. But it’s janky.
The extensions are decent, but they’re clearly bolted on. Sometimes they work. Sometimes they don’t. Sometimes you need to reload VS Code because the Java language server crashed again.
If you’re doing serious Spring Boot development, IntelliJ’s integration will save you hours of frustration.
Performance: The Elephant in the Room
Here’s where things get uncomfortable.
IntelliJ IDEA uses a LOT of memory.
Like, a stupid amount of memory.
On my MacBook Pro (16GB RAM), IntelliJ would regularly use 3–4GB. Sometimes more if I had multiple projects open.
Fans spinning. Battery dying. Laptop hot enough to cook eggs.
VS Code? 200–500MB typically. Even with a ton of extensions.
Startup time?
IntelliJ: 15–20 seconds to open a project. Another 10 seconds to index everything. Then you can start working.
VS Code: 2–3 seconds. Instant.
This matters more than people admit.
When you’re rapidly switching between projects, restarting after crashes, or just want to quickly check something, IntelliJ’s slowness is painful.
I found myself using VS Code just to quickly view a file or make a small edit, because waiting for IntelliJ to start felt wasteful.
The Extension Ecosystem: VS Code’s Secret Weapon
VS Code has more extensions. Way more.
Want to integrate with literally any tool? There’s probably a VS Code extension.
Some of my favorites:
- REST Client (test APIs without Postman)
- GitLens (Git superpowers)
- Thunder Client (another API tester)
- Database viewers
- Docker integration
- Kubernetes support
IntelliJ has plugins too, but the ecosystem is smaller. And many of the best features require the Ultimate edition ($149/year).
VS Code? Free. All extensions free. No paywalls.
That said, IntelliJ’s built-in features are often better than VS Code extensions. The database tools in IntelliJ Ultimate beat most VS Code extensions. Same with Docker and Git integration.
Quality vs quantity.
The Killer Features Nobody Talks About
IntelliJ’s HTTP Client
IntelliJ has a built-in HTTP client. You write requests in .http files:
GET http://localhost:8080/api/users
Authorization: Bearer {{token}}
Run it. See the response. Save responses as examples. Version control your API tests alongside your code.
I stopped using Postman completely.
VS Code has REST Client extension which is similar, but IntelliJ’s is more polished.
IntelliJ’s Database Tools
Connect to your database directly in the IDE. Run queries. View results. Edit data. All without leaving IntelliJ.
Autocomplete for table names. Schema visualization. Query history.
I used to keep MySQL Workbench open. Now? IntelliJ handles it.
VS Code database extensions exist, but they’re not as good. Not even close.
VS Code’s Simplicity
Sometimes you just want to edit a file.
No project setup. No indexing. No waiting. Just open and edit.
VS Code excels at this. It’s lightweight. It’s fast. It stays out of your way.
For configuration files, scripts, or quick edits, VS Code is perfect.
The Real Cost Difference
Let’s talk money.
VS Code: Free. Forever. No catches.
IntelliJ IDEA Community: Free. Good for basic Java. Missing Spring Boot support, database tools, and many advanced features.
IntelliJ IDEA Ultimate: $149/year (first year), $119/year after that. All features unlocked.
Is Ultimate worth $149?
If you’re a professional Java developer working with Spring Boot? Absolutely yes.
The time saved on debugging, refactoring, and Spring integration pays for itself in a week.
If you’re a student or hobby programmer? Probably not. Community edition or VS Code is fine.
If your company pays? Use Ultimate. No question.
What I Actually Use Now (The Honest Answer)
After a year of this experiment, here’s what I do:
80% of my time: IntelliJ IDEA Ultimate
For real Java work, Spring Boot development, debugging production issues, and refactoring legacy code, IntelliJ is unbeatable.
20% of my time: VS Code
For quick edits, non-Java files (markdown, YAML, JSON), and when I need something fast.
I also use VS Code for frontend work. React, TypeScript, HTML/CSS VS Code is better for web development.
But for Java? IntelliJ wins. And it’s not even close.
The Configurations That Matter
If you’re using IntelliJ, these settings will save your sanity:
Enable autosave: Settings → Appearance & Behavior → System Settings → Save files automatically
Increase memory: Help → Change Memory Settings → Set to at least 4GB
Disable unused plugins: Settings → Plugins → Disable stuff you don’t use (seriously, disable at least 20)
Import optimizations: Settings → Editor → General → Auto Import → Optimize imports on the fly
If you’re using VS Code for Java, install these extensions minimum:
- Language Support for Java (Red Hat)
- Debugger for Java (Microsoft)
- Spring Boot Extension Pack
- Maven for Java
- Java Test Runner
And set your JVM memory: "java.jdt.ls.vmargs": "-Xmx2G"
The Workflow Differences That Actually Matter
IntelliJ workflow:
- Open project (wait 15 seconds)
- Wait for indexing (wait another 10 seconds)
- Everything just works
- Refactor with confidence
- Debug like a boss
VS Code workflow:
- Open project (instant)
- Maybe the Java language server works, maybe it doesn’t
- Restart VS Code once or twice
- Google how to do what IntelliJ does automatically
- Edit files quickly
- Git integration is beautiful though
Both work. They just feel different.
IntelliJ feels like driving a luxury car with all the features. Heavy, but powerful.
VS Code feels like a sports car. Light, fast, but fewer features.
The Uncomfortable Truths
Truth 1: Most IntelliJ users don’t know half the features they’re paying for.
I used IntelliJ for years and recently discovered Spring Boot’s HTTP client, structured find/replace, and local history. These features were there the whole time.
Truth 2: Most VS Code users haven’t seriously tried IntelliJ.
“It’s too heavy” is code for “I installed it once and got overwhelmed.”
Fair. But also, you’re missing out.
Truth 3: Your IDE choice doesn’t matter as much as you think.
I’ve seen amazing developers use Eclipse. I’ve seen terrible developers use IntelliJ Ultimate.
The tool matters. But it’s like 5% of productivity. The other 95% is knowing how to actually code.
When to Choose IntelliJ
Use IntelliJ IDEA Ultimate if:
- You’re a professional Java/Spring Boot developer
- Your company pays for it
- You value integrated tools over customization
- You do heavy refactoring
- You debug complex issues regularly
- You want everything to “just work”
Use IntelliJ Community if:
- You’re learning Java
- You don’t need Spring Boot support
- You can’t afford Ultimate
- You work on simple projects
When to Choose VS Code
Use VS Code if:
- You work with multiple languages
- You value speed over features
- You’re on a budget (it’s free)
- You like customizing everything
- You have a low-spec machine
- You do a lot of quick edits
- You prefer lightweight tools
The Mistakes I Made
Mistake 1: Fighting the IDE instead of learning it
I spent two months complaining about IntelliJ’s complexity instead of actually learning the shortcuts.
Once I learned them? Game changer.
Mistake 2: Using VS Code like IntelliJ
VS Code isn’t a Java IDE. It’s a text editor with Java support.
Expecting IntelliJ-level refactoring was setting myself up for disappointment.
Mistake 3: Not using both
The “pick one and stick with it” advice is dumb.
Use the right tool for the job. IntelliJ for Java work. VS Code for everything else.
Real Production Stories
IntelliJ saved me once:
Production bug. Payment service failing. No logs pointing to the issue.
Attached IntelliJ’s debugger to the running JVM (yes, you can do this). Set breakpoints. Found the issue a race condition in transaction handling.
Fixed in 30 minutes. Would’ve taken hours without proper debugging.
VS Code saved me once:
Quick fix needed. Stuck on a train with terrible laptop battery. IntelliJ would’ve killed my battery in 20 minutes.
VS Code? Made the fix. Committed. Pushed. Battery lasted the whole trip.
What The Pros Actually Use
I asked 30 senior Java developers what they use.
Results:
- IntelliJ IDEA Ultimate: 24
- VS Code: 4
- Eclipse: 2 (both legacy codebases)
The VS Code users all worked primarily with microservices and polyglot codebases. They used VS Code for everything, not just Java.
The IntelliJ users were all full-time Java developers.
Make of that what you will.
Resources That Actually Helped
If you’re serious about Java development, these helped me beyond just IDE choice:
The Grokking the Java Interview guide covers concepts your IDE can’t teach you how Java actually works under the hood.
For Spring Boot specifically, Grokking the Spring Boot Interview saved me during debugging sessions. Understanding what Spring does helps regardless of your IDE.
And honestly, the Spring Boot Troubleshooting Cheatsheet sits open next to my IDE (whichever one) constantly.
If you’re preparing for interviews, the 250+ Spring Certification Practice Questions are solid. The certification process taught me features I didn’t know existed in IntelliJ.
For SQL work (which you’ll do in any IDE), the Grokking the SQL Interview guide is free and covers what actually matters.
Tools I Actually Use in Production
Over time, I realized my struggle wasn’t just about IDEs it was about rebuilding the same foundations repeatedly.
The Production Engineering Cheatsheet has patterns I reference regardless of which IDE I’m using that day.
For Spring Boot projects specifically, the Spring Boot Production Checklist is free and catches issues before they hit production.
And for test data problems (which every IDE struggles with), I built TDG Relational Test Data Generator because fake data was breaking our tests constantly.
I’m not selling dreams here just tools I built because I was tired of the same problems appearing in every project.
📬 What I’m Working On
I’m building ProdRescue AI — a tool that turns messy incident logs
into clear postmortem reports in minutes.
Early access is open. If you deal with production incidents,
you might find this useful.
👉 Join the waitlist (2-min form)
The Verdict Nobody Wants
There is no winner.
IntelliJ is objectively better for Java development. But it costs money and resources.
VS Code is faster and free. But it’s not as powerful for Java.
The real answer depends on:
- What you’re building
- What you can afford
- What your team uses
- What your machine can handle
I use both. Most days IntelliJ. Some days VS Code. I’m better because I learned both.
The IDE wars are stupid. Learn your tools. Get good at them. Ship features.
That’s it.
What’s Your Setup?
Are you Team IntelliJ or Team VS Code? Or are you that one person still using Eclipse and pretending everything is fine?
Drop a comment. Tell me why your choice is superior. Or tell me I’m wrong about everything.
Either way, I want to hear your take.
And if you’re about to start an IDE flame war in the comments… good. That’s what they’re for.
Now if you’ll excuse me, I need to restart IntelliJ because it’s using 6GB of RAM again.
I write about what actually breaks in production. No fluff. No tutorials. Just real engineering.
Build something this week. Doesn’t matter which IDE you use. Just build.
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