JAVA Roadmap

 The Java Roadmap You Must Know

1. Linux 2. Git 3. IDE   - IntelliJ   - Eclipse   - VSCode 4. Core   - Classes/Objects - OOP   - Arrays   - Classes   - Packages   - Polymorphism   - Variables   - Strings   - Loops   - Inheritances   - Interfaces   - Files   - I/O Streams 5. Collections   - Arrays   - Lists   - Maps   - Stacks   - Queues   - Optionals 6. Advanced   - Dependency Injection   - Design Patterns   - How JVM Works   - Multi-Threading   - Generics 7. Exception Handling   - Checked Exceptions   - Unchecked Exceptions 8. Streams & Functional Programming 9. Testing   - Unit Testing   - Integration Testing   - Debugging Skills   - Contract Testing   - Mocking   - Assertion Libraries 10. Databases   - Database Design   - Queries   - Indexes   - Joins   - Functions   - Schema Migration Tool (Flyway, Liquibase)   - Relational Database   - JDBC   - NoSQL 11. Clean Code   - SOLID Principles   - N-Tier Architecture   - Immutability 12. Logging 13. Multi-Threading 14. Build Tools   - Maven   - Gradle   - Bazel 15. HTTP   - Rest API   - GraphSQL   - How HTTP Works   - API Design 16. Frameworks   - Spring Boot   - Play   - Quarkus