java Mastery Roadmap
Select a category to start learning.
Module 01
Phase 1: Foundations
~ 11.6 hr
Comments
25 min read
Console Input & Output
30 min read
Variables and Constants
35 min read
Data Types
45 min read
Strings
70 min read
Numbers
50 min read
Operators
45 min read
Conditionals
70 min read
Loops
55 min read
Functions (Methods)
90 min read
Arrays and Lists
90 min read
Date & Time
45 min read
JSON
45 min read
Module 02
Phase 2: Intermediate
~ 5.6 hr
Module 03
Phase 3: Advanced
~ 13.8 hr
Generics
65 min read
Streams API
80 min read
Optional
55 min read
Lambdas & Functional Interfaces
65 min read
Structured Concurrency
50 min read
Virtual Threads (Project Loom)
50 min read
Paths and Utils
60 min read
File & Folder Handling
65 min read
Web Client (HttpClient)
70 min read
OOPs
90 min read
Memory Management & Garbage Collection
45 min read
Reflection API
40 min read
Annotations
45 min read
3rd Party Packages
50 min read
Module 04
Phase 4: Enterprise Backend
~ 17.9 hr
Backend Fundamentals
5 min read
Internet & Networking Basics
5 min read
cURL & HTTP Terms
20 min read
Common HTTP Status Codes
10 min read
Building HTTP Servers with Java
20 min read
API Design Fundamentals using Spring Boot
25 min read
More Spring Boot Concepts
25 min read
Environment Variables
20 min read
Data Validation
15 min read
Cookies
15 min read
Sessions
10 min read
Authentication & Authorization
15 min read
Hashing Fundamentals
15 min read
Encryption and Decryption
15 min read
OAuth 2.0 & Social Login
30 min read
Authentication Systems – Real-World Auth Flows
55 min read
Security Headers
30 min read
Rate Limiting
10 min read
Files & Media Handling
20 min read
File Downloading & Large File Transfers
25 min read
Cloud File Storage using Cloudflare R2
75 min read
Database Fundamentals
10 min read
SQL Databases
45 min read
NoSQL Databases – MongoDB
45 min read
Graph Databases – Neo4j
35 min read
In-Memory Databases – Redis
35 min read
Webhooks
10 min read
Web Sockets & Real Time Communications
25 min read
SSE
10 min read
Sending Emails
25 min read
Sending SMS
20 min read
Firebase Push Notifications
30 min read
Cron Jobs
15 min read
Job Schedulers
35 min read
Cloud Cron Jobs
30 min read
Heavy Tasks & Virtual Threads
20 min read
Logging & Monitoring
15 min read
Unit Testing
40 min read
Scaling Techniques
10 min read
Queues & Message Brokers
45 min read
gRPC
50 min read
GraphQL
65 min read