•Data types, variables, arrays, and operators
•Control statements
•Classes, objects, and methods
•Method overloading and overriding
•Inheritance
•Local variable type inference
•Interfaces and packages
•Exception handling
•Multithreaded programming
•Enumerations, autoboxing, and annotations
•The I/O classes
•Generics
•Lambda expressions
•Modules
•String handling
•The Collections Framework
•Networking
•Event handling
•AWT
•Swing
•The Concurrent API
•The Stream API
•Regular expressions
•JavaBeans
•Servlets

피레미라 그런데 백앤드웹개발 쪽 가려는데
다 겅부해야 할까요? 양이 많던데..