Java Roadmap - Advanced

Follow this step-by-step roadmap to master java at Advanced level

1

Multithreading & Concurrency

3 weeks

▹Processes vs Threads
▹Creating Threads (Thread Class & Runnable Interface)
▹Thread Lifecycle
▹Synchronization (synchronized keyword, locks)
▹Inter-thread Communication (wait, notify, notifyAll)
▹`volatile` keyword and Memory Visibility
▹Executor Framework & Thread Pools
▹Callable & Future Interfaces
▹Atomic Variables
▹Concurrency Utilities (CountDownLatch, Semaphore, CyclicBarrier)

2

Functional Programming & Streams API

3 weeks

▹Lambda Expressions
▹Functional Interfaces (@FunctionalInterface)
▹Method References
▹Introduction to Streams API
▹Intermediate Operations (filter, map, sorted, distinct)
▹Terminal Operations (forEach, collect, reduce, count)
▹Optional Class for handling nulls
▹Collectors (toList, toSet, toMap, groupingBy)
▹Parallel Streams

3

Database Connectivity (JDBC)

2-3 weeks

▹Introduction to JDBC
▹JDBC Architecture and Drivers
▹Connecting to a Database (MySQL/PostgreSQL)
▹Statements, PreparedStatements, and CallableStatements
▹Executing CRUD Operations
▹ResultSet and processing results
▹Transaction Management (commit, rollback)
▹Connection Pooling
▹Mini-Project: Banking System with JDBC

4

Build Tools & Testing

3 weeks

▹Introduction to Build Tools
▹Maven (pom.xml, dependencies, lifecycle)
▹Gradle (build.gradle, tasks)
▹Logging Frameworks (SLF4J, Logback/Log4j)
▹Unit Testing with JUnit 5
▹Assertions and Annotations in JUnit
▹Mocking with Mockito
▹Integration Testing

5

Introduction to Java Frameworks (Spring & Hibernate)

4-5 weeks

▹What is a Framework? (Inversion of Control)
▹Spring Core (ApplicationContext, Beans)
▹Dependency Injection & Annotations (@Component, @Autowired)
▹Introduction to Spring Boot
▹Building a Simple REST API with Spring MVC
▹Introduction to ORM & Hibernate
▹JPA (Java Persistence API) Basics
▹Spring Data JPA
▹Mini-Project: RESTful API with Spring Boot & Spring Data JPA

6

Deployment & DevOps Basics

2 weeks

▹Packaging Applications (JAR vs WAR)
▹Introduction to Web Servers (Tomcat)
▹Introduction to Docker & Containers
▹Dockerizing a Java Application
▹Basic CI/CD Concepts
▹Building with GitHub Actions or Jenkins

7

Expert & Emerging Topics

6-8 weeks

▹Design Patterns (Singleton, Factory, Observer, etc.)
▹Microservices Architecture Concepts
▹Spring Cloud for Microservices
▹Reactive Programming (Project Reactor/RxJava)
▹Message Queues (RabbitMQ/Kafka)
▹Java Memory Model & Garbage Collection Tuning
▹Virtual Threads (Project Loom)
▹Kotlin & Java Interoperability

GeekDost - Roadmaps & Snippets for Developers