homeWork1 - Java fundamentals.

homeWork3 - OOP: Incapsulation, Inheritance, Composition.

homeWork4 - OOP: Polymorphism, Abstraction, static, final, Interface, SOLID.

homeWork5 - String + Log4j.

homeWork6 - Exceptions and errors.

homeWork7 - Collections: Enum, Arrays, Lists.

homeWork8 - Collections: Iterator/Comparator, Set, Queue.

homeWork9 - Collections: Map.

homeWork10 - Generics.

homeWork11 - IO, Serialization/Deserialization.

homeWork13 - Reflection.

homeWork14 - Java 8 features and BP (Lambda/Stream API).

homeWork16 - JDBC.

homeWork19 - Design patterns.