Java Developer Bootcamp

Java Developer

6 weeks · Beginner+ to Intermediate · live + recorded

A hands-on Java curriculum covering modern Java (21 LTS), OOP, collections, streams, Spring Boot, JPA/Hibernate, REST APIs, microservices, testing with JUnit, build tools (Maven/Gradle), and production deployment — delivered by senior US enterprise Java engineers.

10Core Modules

35+Practical Skills

5+Project Tracks

1:1Career Support

The production stack you'll master

Each tool taught with the workflows and failure modes practitioners actually meet on the job.

01Java 21 LTSModern Java

02Spring Boot 3Application framework

03JPA/HibernateORM

04MavenBuild & dependencies

05GradleModern build

06JUnit 5Testing

07MockitoMocking

08PostgreSQLRelational DB

09DockerContainerization

10IntelliJIDE

Foundation modules

First half of the curriculum — core fundamentals and the most common day-to-day skills.

Core Java

JVM basics, variables, types, control flow, methods, packages, exception handling, modern Java syntax (var, switch expressions).

OOP in Java

Classes, inheritance, polymorphism, interfaces, abstract classes, generics, records, sealed classes.

Collections & Streams

List, Set, Map, Queue, Deque, Stream API, lambdas, method references, Optional, parallel streams.

Build Tools

Maven lifecycle, pom.xml, dependencies, plugins, multi-module projects, Gradle basics for greenfield work.

Testing with JUnit 5

Assertions, lifecycle, parameterized tests, Mockito mocking, integration tests with TestContainers.

FreshersLand your first Java dev role with a strong Spring Boot portfolio.

Enterprise DevsModernise from older Java (8, 11) to 21 LTS with Spring Boot 3.

Career SwitchersMove into enterprise Java — high demand in US banks, healthcare, insurance.

PolyglotsAdd production Java to your existing toolkit.

Advanced modules

Second half — production patterns, real-world operations, and the senior-level depth.

Spring Boot Fundamentals

Auto-configuration, starters, application.yml, profiles, beans, dependency injection, component scanning.

Spring Data JPA

Entities, repositories, query methods, JPQL, native queries, transactions, N+1 problem, lazy vs. eager.

REST APIs with Spring

Controllers, request mapping, validation, error handling, OpenAPI/Swagger, content negotiation.

Microservices Patterns

Service decomposition, REST vs. messaging, service discovery (Eureka), circuit breakers (Resilience4j), API gateway.

Deployment & Observability

Spring Boot Actuator, Micrometer + Prometheus, Docker images, deploying to Kubernetes / AWS ECS.

Hands-on project outcomes

Build and deploy a Spring Boot REST API with JPA persistence.
Decompose a monolith into 3+ microservices with proper boundaries.
Write 80%+ tested Java code with JUnit 5 and Mockito.
Diagnose and fix N+1 queries in Hibernate.
Containerize and deploy a Spring Boot app to Kubernetes.
Add Prometheus metrics and Grafana dashboards to a Java service.
Build a multi-module Maven project end to end.
Implement OAuth2 security in Spring Security.

Course learnings

Modern Java (21 LTS) language features.
Spring Boot 3 ecosystem from soup to nuts.
JPA and Hibernate at production depth.
Microservices patterns the enterprise way.
Build tools — Maven primary, Gradle alongside.
Production observability for JVM applications.

Career readiness, built in.

techventive.io turns this curriculum into job-ready positioning — project explanation, résumé and LinkedIn rewrites, GitHub portfolio polish, technical interview preparation, and placement-focused guidance through to the offer letter.

Java Developer
Spring Boot Engineer
Backend Engineer
Enterprise Java Developer
Microservices Engineer
Senior Java Engineer

Who can apply

Freshers, working professionals, managers, career switchers, and aspirants who want a practical, job-focused path.

Freshers

Enterprise Devs

Career Switchers

Polyglots