Arrays-ArrayLists
An overview of Arrays and ArrayLists, focusing on their differences, usage, and when each is most appropriate in Java programming.
File-IO
Introduction to file input and output in Java, including handling files, reading, and writing data with PrintWriter and FileReader classes.
Exceptions
Explores the Exception hierarchy in Java, how to handle runtime errors gracefully, and best practices for error handling.
Interfaces
Covers the basics of interfaces in Java, including how they support polymorphism and multiple inheritance, by fulfilling contracts between classes.
Inheritance
A look at inheritance in Java, illustrating how classes can inherit properties and methods, promoting code reuse and structure.
Concurrency
Introduction to concurrency in Java, discussing threads, synchronization, and common pitfalls of concurrent programming.