OOP
DB
Design
Queries
Indexing
Transactions locking - ACID
Java
Classes - Interfaces -packages - modifiers, access specifiers
Data types, variables, arrays, Strings
Wrapper classes, Autoboxing, and inner classes
Generics, lambda, method references
Collections
Stream API
Annotations
Reflection //
Threads
JDBC
Git
https://missing.csail.mit.edu/2020/version-control/
ORM
https://www.youtube.com/watch?
v=t6n1NwMM8a8&list=PLEocw3gLFc8UYNv0uRG399GSggi8icTL6
JPA
Hibernate
Servlets and jsp //
Async
Ajax
Web sockets
SSE
Spring framework
https://www.youtube.com/watch?v=m-L-r862JE&list=PLOk4ziGG9MBdlyxIDw5wYvj6QZTQ22wvK
https://docs.spring.io/spring-framework/reference/core/beans.html
spring core
spring data access //
spring data
Spring boot
REST
Docker
Spring cloud - Kafka
Angular JS
SOLID
https://www.youtube.com/watch?v=hbWDYRSjqk&list=PLnqAlQ9hFYdflFSS4NigVB7aSoYPNwHTL
https://refactoring.guru/design-patterns