Forgile is a place to practice. Short exercises, your code compiled and run in a real environment, automatic grading with tests, and every error explained in plain words, right next to the compiler’s original message.
No card needed. The whole programming logic path (Lógica de programação) is free.
Lessons and exercises are in Portuguese for now. The app is already available in English, and English lessons are on the way.
Test passed
Ember burning for 6 days
Forgy, the blacksmith robot who keeps you company at the forge.
Learn, practice, run, understand the error, improve. Here is the whole cycle in a real exercise from the Java do zero path, Primeiros passos module.
One idea at a time, in short lessons with examples you run right there. Then straight to practice.
Java do zero · Primeiros passos
Business card
Print exactly these three lines:
Name: Forgy
Job: Code blacksmith
City: The ForgeYou write the code in the browser, on a computer or on your phone. Nothing to install.
1void main() {
2 IO.println("Name: Forgy");
3 IO.println("Job: Code blacksmith")
4 IO.println("City: The Forge");
5}Your code is compiled and really runs, in an isolated environment. Tests decide whether it passes, not a guess.
Run and check
Compiler message
Main.java:3: error: ';' expected
IO.println("Job: Code blacksmith")
^
1 errorEvery error comes with a plain explanation, no blame and a next step. The original message stays in view: learning to read it is part of the job.
Compilation error, line 3
Line 3 is missing a semicolon
In Java, every statement ends with a semicolon. Add a ; at the end of the statement and run it again.
Fixed it, ran it again, passed. The XP counts toward your daily goal and your ember keeps burning.
Test passed
Your program gave the right answer
The output was exactly what we expected. Nice work.
+30 XP
Start with logic, without worrying about commas and braces, then move on to Java, SQL and back-end. That’s 25 modules, 88 short lessons and 2,261 exercises, each one checked on the code runner before going live.
For beginners
3 modules 12 lessons 271 exercises
Entirely free
Learn to think like a programmer: break problems into steps, make decisions and repeat tasks. All in pseudocode, written in Portuguese for now.
For beginners
13 modules 43 lessons 1,169 exercises
First 2 modules free
Code from the very first lesson, run in the browser. You learn to read errors as clues, from variables to inheritance, records and recursion.
For beginners
4 modules 13 lessons 362 exercises
First 2 modules free
Talk to databases: search, filter, summarize and combine information. You write queries from the first lesson and see the result right away, in tables.
After Java
5 modules 20 lessons 459 exercises
First 2 modules free
From HTTP to the layers of a back-end: methods, status codes, JSON, controller, service and repository. You build a server in plain Java and, by the end, recognize all of it in Spring Boot.
Modules included in the free plan
The free plan never expires and needs no card. Prices are in Brazilian reais (R$), and you’re charged in BRL.
R$ 0
Learn the essentials and build the habit.
R$ 24.90 per month
or R$ 199 per year, about R$ 16.58 a month. The annual plan can also be paid with Pix.
Coming soon to PRO
For now, lessons and exercises are in Brazilian Portuguese. The app itself (menus, buttons and screens) is already available in English, and we are preparing English versions of the lessons. Code reads the same in any language: Java and SQL keywords don’t change.
No. The Lógica de programação path starts from zero, and Java do zero and SQL do zero also start at the very beginning. If you already know a bit, the placement check shows you where to pick up.
No. Everything happens in the browser. Your code is compiled and run on our servers, in an isolated environment, and the result comes back in seconds.
Yes. Lessons and quick exercises were designed for the phone, in sessions of a few minutes. Coding exercises work too, but they’re more comfortable on a computer.
Java 25, the current LTS (long-term support) release. SQL runs on SQLite.
When your code doesn’t pass, you can ask for a hint. It explains what happened and suggests the next step, without handing you the solution. You get 5 hints a day on the free plan and 50 on PRO.
Payments are handled by Stripe, by credit card; the annual plan also accepts Pix, Brazil’s instant payment system. On a card, the subscription renews automatically at the end of each period. You can cancel anytime, with no fee, and PRO stays unlocked until the end of the paid period. Within 7 days of subscribing, you can change your mind and get a full refund. Prices are charged in Brazilian reais (BRL).
Create your account, pick a path and solve your first exercise today.