Inside Java is a resource for Java developers, offering insights, tutorials, and updates on the Java programming language, platform, and ecosystem. With contributions from Java experts and members of the Java community, Inside Java covers a wide range of topics, including language features, performance optimizations, and upcoming releases. Developers can stay informed about the latest developments in the Java ecosystem, learn about new APIs and frameworks, and explore best practices for building robust and scalable Java applications.

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Heterogeneous Accelerator Toolkit (HAT) is a new parallel programming framework for Java that enables GPU acceleration of data-parallel workloads. Built on top of OpenJDK's Babylon code-reflection APIs, HAT can transform Java code into CUDA or OpenCL, and includes a runtime system for automatic code management, data handling, and migration. A JavaOne 2026 talk covers the core HAT API components and demonstrates how developers can offload workloads to GPUs for significant performance gains.

Under the HAT: Empowering GPU Acceleration for Java