Once you know Java, you need to understand how it communicates with the internet.
Modern alternatives optimized for cloud-native and serverless environments (faster startup times and lower memory usage). Learn Java for Web Development
Essential for managing data. Master List (ArrayList), Set (HashSet), and Map (HashMap). Once you know Java, you need to understand
Frameworks handle the "boilerplate" code, allowing you to focus on business logic. Once you know Java
Java syntax, variables, and primitive vs. reference types.
The dominant framework in 2026 for microservices and enterprise backends. It provides built-in security, data access, and cloud-ready tools.