A new preview of ja and its composable command-line tools aims to modernize Java development. These tools leverage the Java Module System to simplify module creation and consumption. The module descriptor is enhanced to fully describe a project, including dependency versions and metadata. Tools like jig handle module resolution, compilation, and assembly, acting as a bridge to Maven repositories. jfmt enforces code formatting conventions for cleaner Java code. jist offers source-aware symbol searching for easier code navigation. jdocserver provides local API documentation browsing. These tools integrate with the JDK's tool discovery and execution capabilities. They provide a seamless transition to standard JDK tools like jdeps and jlink. The system addresses challenges with existing Maven artifacts by inferring module coordinates and establishing canonical coordinates. Integrity by default is enforced by allowing explicit declaration and authorization of runtime access requirements, preventing unauthorized mutations. This ensures greater security and control over module interactions.