Technical / ITSoftware & web▶ Live code
Java backend development
Core Java, OOP, collections, SQL and Spring Boot REST APIs — the most-hired backend stack in Kerala IT parks.
Who it’s for: Graduates aiming for Java developer roles in IT services and product companies.
Roadmap
What you’ll learn
Follow the modules in order. Finish a small project at the end of each one.
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01
Core Java & OOP
5 weeks- Syntax, types and control flow
- Classes, inheritance, interfaces
- Exceptions and collections
- Streams and lambdas
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02
Databases
3 weeks- SQL joins and aggregates
- Normalisation and indexes
- JDBC basics
- JPA/Hibernate overview
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03
Spring Boot
6 weeks- REST controllers and DTOs
- Dependency injection
- Spring Data JPA
- Validation and error handling
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04
Production skills
3 weeks- Unit testing with JUnit
- Maven/Gradle
- Logging and configuration
- Docker basics
Tools
Tools & skills to learn
- Java 17+
- Spring Boot
- MySQL/PostgreSQL
- IntelliJ IDEA
- Maven
- Postman
- Git
Certifications
Useful certifications
- Oracle Certified Professional: Java SE DeveloperPaid; recognised by employers
- Spring Certified ProfessionalPaid; for experienced developers
Certificates support your profile — interviewers still ask what you built. Check current fees and rules on the official site.
Practice
Projects to build
Put these on your resume — they give you real stories for interviews.
- 1Student management REST API with CRUD and validation
- 2Job-portal backend with search and pagination
- 3Expense tracker API with authentication
Live code
Practise right here
Run examples and try the 🏆 challenges — your answers are checked automatically.
Preview
Console
Sample tables: employees(id, name, dept_id, salary, joined) · departments(id, name) · users(id, email)
Result
Press Run to see the result.
Output
Code runs only in your browser. Press Ctrl/⌘ + Enter to run. Pick a 🏆 Challenge from the Example list to get your answer checked automatically.
Next steps
Interview & jobs
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