Design
Plan the structure of a REST API: endpoints, data models, and flow.
Design is a free Java Academy lesson on CoddyKit. This is lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Java Academy learning path, and your progress syncs across the web and the CoddyKit app. The Java Academy course includes 4 lessons in total.
Intro
Goal: design a small REST API for managing tasks. We define endpoints, data models, and flow.
Endpoints
GET /tasks: list all tasksPOST /tasks: create taskGET /tasks/{id}: get one taskPUT /tasks/{id}: update taskDELETE /tasks/{id}: delete task
Code: Task model
The Task model has id, title, and done fields.
public class Task {
private Long id;
private String title;
private boolean done;
// getters/setters omitted
}
Flow
Flow: controller handles HTTP → service does business logic → repository saves data.
Code: Controller outline
Controller outlines endpoints; later we connect service/repository.
import org.springframework.web.bind.annotation.*;@RestController
@RequestMapping("/tasks")
public class TaskController {
@GetMapping
public String all() { return "list tasks"; }
@PostMapping
public String create() { return "create task"; }
}
Good practices
Good practices: use nouns in URIs, proper HTTP verbs, and return JSON bodies.
HTTP verb check
Quick check: Which HTTP verb is typically used to create a new resource?
Recap
Recap: Designed task API: endpoints, model, flow, and good practices.
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Frequently Asked Questions
Is the “Design” lesson free?
Yes — the full text of “Design” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Java Academy course, upgrade to CoddyKit PRO. The Java Academy course includes 4 lessons in total.
What will I learn in “Design”?
Plan the structure of a REST API: endpoints, data models, and flow. You practise Java Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Java Academy?
No prior experience is required. Java Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 1 of 4.
How long does the “Design” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Java Academy lesson?
Yes. Every Java Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.