UUID Generator for Java

This tool generates UUIDs for Java applications using RFC 4122 standards. It supports three UUID versions: v4 (random-based), v3 (name-based with MD5), and v5 (name-based with SHA-1). By default, it produces v4 IDs, suitable for general-purpose unique identifiers in code, databases, and testing data.
Conceptually, inputs are fed into a deterministic algorithm pipeline: v4 uses a cryptographically strong RNG to fill the 128-bit value; v3 and v5 derive the value from a namespace UUID combined with a name, then apply the appropriate hash and set version bits.
The tool is valuable for Java developers, QA engineers, backend teams, and data engineers who require reproducible IDs across environments or seed data with deterministic results. It helps ensure consistency in distributed systems, microservices, and test environments.
Core differentiators include explicit RFC 4122 compliance, straightforward namespace handling, support for single or multiple UUIDs in one operation, and flexible output formatting. Use cases include generating primary keys for test records, seeding databases, and generating deterministic identifiers for integration tests.