JAVA - 
1. OOPS
2. Collections
3. Exception Handling
4. Java 8
5. Thread
6. String
7. Design Patterns
8. Memory Management
9. Constructors & other fundamentals
10. Coding (Java 8, Array, String, Linked List)

SPRING BOOT - 
1. Basics & Annotations
2. Project Structure
3. Exception Handling
4. Spring Boot Properties
5. Testing

MICROSERVICES
1. Basics & Key Differences
2. Communication Between Services
3. Load Balancing
4. API Gateway
5. Design Patterns

OTHER TOPICS
1. SQL (Theory & Coding)
2. Spring MVC, Spring Security
3. Hibernate
4. Git, Bitbucket, Maven, Jenkins, Docker
5. Project Specific