Java Developer Roadmap

Java Basics

Basic syntax, lifecycle of program, variables, data types, type casting.

Control Flow

Conditionals, loops, arrays, strings, math operations.

Checkpoint — Core Java

OOP Fundamentals

Classes, objects, attributes, methods, access specifiers.

Advanced OOP

Inheritance, abstraction, encapsulation, interfaces, polymorphism.

Checkpoint — Object Oriented Design

Advanced Java

Enums, records, annotations, modules, optionals.

Exception Handling

Checked & unchecked exceptions, best practices.

Checkpoint — Language Mastery

Collections Framework

List, Set, Map, Queue, Stack, iterators, generics.

Functional Programming

Lambdas, functional interfaces, Stream API.

Checkpoint — Data Handling

Concurrency

Threads, virtual threads, volatile keyword, Java memory model.

I/O & Networking

File operations, I/O streams, networking basics.

Checkpoint — System Level Java

Backend Development

Build Tools

Maven, Gradle, Bazel.

Web Frameworks

Spring Boot (recommended), Quarkus, Play, Javalin.

Checkpoint — Backend Foundations

Database Access

JDBC, Hibernate, Spring Data JPA, EBean.

Logging Frameworks

Logback, Log4j2, SLF4J, TinyLog.

Checkpoint — Production Ready

Testing

JUnit, TestNG, REST Assured, Mockito, Cucumber, JMeter.

Industry Ready Java Developer