Java

Embark on an enlightening journey through the heart of Java, focusing exclusively on the world of bytecode—Java Virtual Machine’s (JVM) language. This session is designed for those curious about the pivotal role bytecode plays in bridging the gap between high-level Java source code and machine-level execution. We’ll delve into the essence of bytecode, demystifying how the X.java file is ingeniously converted into the X.class bytecode file, and uncover the intrinsic link between your source code and its bytecode representation. Beginning with an overview of the Java specification, we set the stage for understanding the fundamentals that govern source code structure. We then progress to uncovering how Java source text is transformed into a structured intermediary “tree,” setting the foundation for bytecode generation. We provide a comprehensive view of the pipeline that transfigures Java Source Code into the bytecode that runs on the JVM. This session promises a deep dive into the byte-level intricacies of Java, offering attendees a unique perspective on the compilation process and a deeper appreciation for the efficiency and portability bytecode brings to Java applications.

Ready to embark on a journey through the intricate world of Java debugging? This hands-on session is your roadmap through the maze of effective problem-solving, where logic meets strategy in an epic showdown. Through case studies and real-world examples, uncover the secrets to diagnosing and resolving software anomalies, from unexpected behaviors to performance bottlenecks. Transform your debugging approach with our expert insights, learning to tackle both abstract problems and concrete challenges with confidence.

Command Query Responsibility Segregation (CQRS) is a proven design pattern that enables the clear separation of data changes (commands) and data queries (queries). This separation allows these responsibilities to be scaled and optimized independently. The application code is also structured more understandably, which improves maintainability.

In this talk, the understanding of the practical implementation of the CQRS principles will be deepened and implemented using modern Java language features such as records, switch expressions, and pattern matching.

An example application is used to demonstrate how the theoretical foundations of CQRS can be applied in practice and how this affects application design while increasing data access efficiency.