🎓 Java Spring Boot Learning Plan

Hour 1: Introduction to Java (60 min)

Session 1 (30 min): What is Java?

• Platform-independent language: "Write Once, Run Anywhere"
• Strongly typed vs PHP dynamic typing
• JDK, JRE, JVM concepts
• Maven/Gradle (like Composer)

Session 2 (30 min): Environment Setup

1. Install JDK → Verify: java -version
2. Configure Windsurf for Java development
3. Set JAVA_HOME environment variable
4. Install Java Extension Pack in Windsurf (if needed)
5. Create & run HelloWorld.java in Windsurf

Hour 2: Java Syntax & OOP (60 min)

Session 1 (30 min): Java Syntax

• Data types: int, double, String, boolean
• Arrays: int[] numbers = {1,2,3};
• Methods: public int add(int a, int b) { return a + b; }
• Control structures: if-else, for, while

Session 2 (30 min): Object-Oriented Programming

• Classes and Objects
• Constructors
• Getters and Setters
• Access modifiers: public, private, protected
• Static vs Instance methods

Practice: Create Product, Customer, and Order classes in Windsurf

💡 Windsurf Tip: Use Cascade AI to help you write and debug Java code!

Hour 1: Spring Boot Introduction (60 min)

Session 1 (30 min): Understanding Spring Boot

• Spring Framework = Enterprise Java framework (like Laravel)
• Spring Boot = Spring + Auto-config + Embedded Server
• No XML configuration needed
• Production-ready features

Laravel vs Spring Boot

Session 2 (30 min): Create Project

1. Go to start.spring.io
2. Maven, Java 17/21, Spring Boot 3.2.0
3. Group: com.mobikul, Artifact: api
4. Add: Spring Web, JPA, MySQL, Lombok, DevTools
5. Generate → Extract → Open folder in Windsurf
6. Windsurf will auto-detect Maven project and download dependencies

Hour 2: Architecture & First API (60 min)

Session 1 (30 min): Three-Layer Architecture

💡 Windsurf Advantage: Use Cascade to generate Controller, Service, and Repository classes automatically!

• Controller: Handles HTTP requests (@RestController)
• Service: Business logic (@Service)
• Repository: Database access (@Repository)

Key Annotations

Session 2 (30 min): Create Hello API

Create controller/HelloController.java with GET and POST endpoints

💡 Windsurf Tip: Ask Cascade to create REST endpoints for you!

Run Spring Boot app: Right-click on main class → Run

Test with browser and Postman

Hour 1: MySQL Integration (60 min)

Session 1 (20 min): Configure Database

1. Create database: CREATE DATABASE mobikul_db;
2. Edit application.properties:

   spring.datasource.url=jdbc:mysql://localhost:3306/mobikul_db
   spring.datasource.username=root
   spring.datasource.password=
   spring.jpa.hibernate.ddl-auto=update
   spring.jpa.show-sql=true

Session 2 (40 min): Create Entity & Repository

Entity: @Entity class with @Id, @Column

Repository: Interface extending JpaRepository<Product, Long>

Auto-provides: findAll(), findById(), save(), delete()

Hour 2: Complete CRUD API (60 min)

Create ProductService with methods:

• getAllProducts()
• getProductById(Long id)
• createProduct(Product product)
• updateProduct(Long id, Product details)
• deleteProduct(Long id)

Create ProductController with endpoints:

• GET /api/products - Get all
• GET /api/products/{id} - Get by ID
• POST /api/products - Create
• PUT /api/products/{id} - Update
• DELETE /api/products/{id} - Delete

Test all endpoints with Postman

💡 Windsurf Pro Tip: Use Cascade to debug errors and optimize your code!