Computer Science and Databases made engaging and supportive

The Student and Tutor reviewed the implementation of custom exceptions in Java, focusing on credit card and crypto payment scenarios. They then moved on to a JavaFX exercise involving updating a line number display within a text editor based on user interactions. The Student will continue working on this feature, applying guidance on event handling and data retrieval, with a follow-up planned for the next session.

The student and tutor explored the concept of semantics in distributed systems, with a primary focus on RPC call semantics. They discussed various types of call semantics, including "at least once" and "exactly once," and their implications for reliability and consistency. The session concluded with the student practicing identifying these semantics through example questions.

The student and tutor worked on implementing custom exceptions in Java and managing them with try-catch blocks. The discussion covered the syntax for throwing exceptions and the correct placement and structure of try-catch blocks to ensure robust error handling. The student plans to complete similar exception handling for other parts of their code.

The tutor guided the student in developing two core functions for a programming library project: a dice rolling simulator and a string manipulation function that capitalizes vowels and lowercases consonants. They worked on refining the dice rolling logic and integrating the new string function, ensuring all project requirements for the library were met.

The student and tutor reviewed synchronization problems, including the Readers-Writers problem, the Dining Philosophers problem illustrating deadlock, and barrier synchronization. They discussed the challenges and solutions for concurrent access to shared resources and planned for the student to practice with practical questions.

The student and tutor focused on distributed systems, beginning with an overview of inter-computer communication challenges and layered network architectures. They then delved into network sockets as an OS interface for communication, followed by an introduction to Remote Procedure Calls (RPC) as a higher-level abstraction to simplify network programming and address socket limitations. The next session will involve reviewing questions prepared by the tutor on these topics and potentially other related lecture slides.