In my previous Java-related blog post called Level-up your Java Debugging Skills with on-demand Debugging, I showed you how to use the onthrow option of the JDWP agent to start the debugging session on the first throw of a specific exception. This gave us a mysterious error in JDB: And I asked if somebody had any ideas. No one had, …

Two Approaches There’s little doubt that modern software architectures lean towards asynchronous models for communication between distributed components (where “distributed” means components that are not part of the same process, be they on the same or on different physical machines). Synchronous models such as Remote Procedure Call (RPC) are now largely discredited [Waldo, Vinoski]; even asynchronous variants of these are …

Java 21, released on September 19th, 2023, brings many new features, 8 which are fully integrated and 7 which are incubator or preview. In this article, I want to highlight one of those preview features: Java Enhancement Proposal (JEP) 445: “Unnamed Classes and Instance Main Methods”. It’s a preview feature, meaning you need extra flags to use it. The goal …