Épisodes

  • WebAssembly / Wasm and Java

    WebAssembly / Wasm and Java
    Jul 20 2025
    An airhacks.fm conversation with Fabio Niephaus (@fniephaus) about: GraalVM polyglot capabilities now available as Maven dependencies without requiring GraalVM JDK, running WebAssembly modules in Java applications using GraalWasm, separation of polyglot runtime from GraalVM distribution, embedding use cases for extending Java applications with python JavaScript and WebAssembly, performance benefits when running on GraalVM vs openJDK through automatic JIT optimization, WebAssembly as portable compilation target for multiple languages including rust C++ Go, WASI (WebAssembly System Interface) enabling file and network operations, advantages over JNI/Panama FFI for native extensions due to portability and sandboxing, multi-threading support with context pools for high throughput, using JavaScript bindings as intermediary for high-level Java-WASM interactions, future component model with WIT (WebAssembly Interface Types) for language-agnostic interfaces, security benefits of sandboxed execution for untrusted code, WebImage preview feature compiling Java bytecode to WebAssembly modules, javac demo running Java compiler in browser, command-line tools converted to web applications using WebImage, Edge Computing use cases for user-defined functions, native image compatibility with GraalWasm, Pyodide integration possibilities for secure Python native extensions, Spring Shell successfully compiled to WASM demonstrating framework compatibility, ongoing work on threading networking and WASI support for full server-side capabilities, collaboration with WebAssembly community and Bytecode Alliance, WASM GC proposal for efficient garbage collection, bringing dynamic class loading to native image, GraalWasm demos and guides, javac on Wasm live demo, javac on Wasm demo code, Web Image talk at Wasm.io 2025, GraalVM Web Image sources, GDK Launcher, GraalPy, GraalPy demos and guides

    Fabio Niephaus on twitter: @fniephaus
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    55 min
  • There Can Be Only One

    There Can Be Only One
    Jul 15 2025
    An airhacks.fm conversation with Maurice Naftalin (@mauricenaftalin) about: experiences with Visual Age for Java and its visual programming approach with arrows connecting components, working on British Department of Health and Social Security project using Visual Age for Java for benefits system navigation, comparison of various Java IDEs including Visual J++, Sun Java Workshop, JBuilder, Eclipse, NetBeans, IntelliJ IDEA, and Visual Studio Code, advantages of VS Code for polyglot programming and its growing ecosystem, visual programming experiences with state charts for reactive systems, IBM Rational tools and UML integration, successful visual programming with NetBeans Matisse GUI builder and AWS Step Functions, Model Driven Architecture and code generation from UML diagrams, writing Java Generics and Collections book with Philip Wadler for Java 5 and updating it for a second edition, changes in Java idioms over 15 years including deprecation of wrapper class constructors, sequence collections as major addition to Java collections framework, PECS (Producer Extends Consumer Super) principle for generics, underappreciated Java collections like NavigableMap, preference for method references and keeping lambdas concise in streams, using Class::method notation instead of Class.method, Scottish countryside and Edinburgh living experiences, early internet challenges with 300 baud acoustic couplers influencing views on network distribution versus CD-ROMs, transition from safety-critical systems to Java training and consulting, importance of understanding bounded wildcards in generics, future impact of Project Valhalla on generics and collections

    Maurice Naftalin on twitter: @mauricenaftalin
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    1 h et 4 min
  • TornadoVM: The Need for GPU Speed

    TornadoVM: The Need for GPU Speed
    Jul 6 2025
    An airhacks.fm conversation with Michalis Papadimitriou (@mikepapadim) about: starting with Java 8, first computer experiences with Pentium 2, doom 2 and Microsoft Paint, university introduction to Object-oriented programming using Objects First and bluej IDE, Monte Carlo simulations for financial portfolio optimization in Java, porting Java applications to OpenCL for GPU acceleration achieving 20x speedup, working at Huawei on GPU hardware, writing unit tests as introduction to TornadoVM, working on FPGA integration and Graal compiler optimizations, experience at OctoAI startup doing AI compiler optimizations for TensorFlow and PyTorch models, understanding model formats evolution from ONNX to GGUF, standardization of LLM inference through Llama models, implementing GPU-accelerated Llama 3 inference in pure Java using TornadoVM, achieving 3-6x speedup over CPU implementations, supporting multiple models including Mistral and working on qwen 3 and deepseek, differences between models mainly in normalization layers, GGUF becoming quasi-standard for LLM model distribution, TornadoVM's Consume and Persist API for optimizing GPU data transfers, challenges with OpenCL deprecation on macOS and plans for Metal backend, importance of developer experience and avoiding python dependencies for Java projects, runtime and compiler optimizations for GPU inference, kernel fusion techniques, upcoming integration with langchain4j, potential of Java ecosystem with Graal VM and Project Panama FFM for high-performance inference, advantages of Java's multi-threading capabilities for inference workloads

    Michalis Papadimitriou on twitter: @mikepapadim
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    1 h
  • Building AI-Native Code Platform With Java for Java

    Building AI-Native Code Platform With Java for Java
    Jul 3 2025
    An airhacks.fm conversation with Jonathan Ellis (@spyced) about: brokk AI tool for code generation named after Norse god of the forge, AI as complement to experienced programmers' skillsets, age and productivity in programming, transition from JVector to working on Cassandra codebase, challenges with AI in large codebases with extensive context, building tools for historical Java codebases, comparison of productivity between younger and older programmers, brute force coding vs experienced approach, reading code quickly as a senior skill, AI generating nested if-else statements vs better structures, context sculpting in Brokk, open source nature of Brokk, no black boxes philosophy, surfacing AI context to users, automatic context pulling with manual override options, importing dependencies and decompiling JARs for context, syntax tree based summarization, Maven and Gradle dependency handling, unique Java-specific features, multiple AI model support simultaneously, Claude vs Gemini Pro performance differences, Git history as context source, capturing commits and diffs for regression analysis, migration analysis between commits, AI code review and technical debt cleanup, style for code style guidelines, using modern Java features like var and Streams, Error Prone and NullAway integration for code quality, comparison with Cursor's primitive features, branching conversation history, 80% time in Brokk vs 20% in IntelliJ workflow, sketching package structures for AI guidance, data structures guiding algorithms, Git browser by file and commit, unified diff as context, reflection moving away from due to tooling opacity, Jackson serialization refactoring with DTOs, enterprise features like session sync and sharing, unified API key management, rate limit advantages, parallel file processing with upgrade agent, LiteLLM integration for custom models, pricing model based on credits not requests, $20/month subscription with credits, free tier models like Grok 3 Mini and DeepSeek V3, architect mode for autonomous code generation, code button for smaller problems with compile-test loop, ask button for planning complex implementations, senior vs junior programmer AI effectiveness, self-editing capability achieved early in development, no vector search usage despite JVector background

    Jonathan Ellis on twitter: @spyced
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    1 h et 2 min
  • Not Your Java Package Handler

    Not Your Java Package Handler
    Jun 21 2025
    An airhacks.fm conversation with Billy Korando (@BillyKorando) about: Apple IIe and Packard Bell in the late 80s/early 90s, playing games like Three Stooges and Wolfenstein 3D, taking a year off after high school to work at FedEx as a package handler which motivated him to pursue higher education, his first professional job working on insurance regulation software using Java 1.4 with Apache Struts and custom frameworks, transitioning to Spring 2.5 and experiencing the XML configuration challenges, experience with the microservices hype around 2015 and learning that organizations that couldn't build good monoliths wouldn't succeed with microservices either, automated testing and JUnit 5, meeting Pratik Patel at DevNexus which led to his first devrel position at IBM, traveling extensively for conferences including J-Fall in the Netherlands, being laid off from IBM in 2021 and joining Oracle's Java team, focusing on JDK technologies like JFR, garbage collection, and project leyden, helping organize the Kansas City Developers Conference, involvement in reviving JavaOne as a standalone conference, the importance of automated testing with tools like Test Containers versus older approaches with H2 databases, the challenges of maintaining code coverage as a metric, the evolution of Java, focus on Java observability tools and performance optimization

    Billy Korando on twitter: @BillyKorando
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    1 h et 12 min
  • From Punch Cards (and Tapes) to Java

    From Punch Cards (and Tapes) to Java
    Jun 17 2025
    An airhacks.fm conversation with Maurice Naftalin (@mauricenaftalin) about: Shelton Signet CP/M machine costing £3000 in the 1980s, discussion about the CP/M operating system which started in 1972, Maurice's early career teaching programming at Wolverhampton Polytechnic (now University), teaching Pascal programming language, creating a membership system for a political campaign using his first computer, Maurice's background as a chemist studying nuclear magnetic resonance (which later became MRI), learning fortran to process data using Fast Fourier Transforms, discussion about the NAG Library and challenges with array indices between C and Fortran, programming in the early days using punch cards and waiting hours for compilation results, the evolution from punch cards to paper tape which was more fragile, the role of punch operators who would type programs onto cards, Maurice's experience programming in assembler after learning Fortran, working at British Steel on an eccentric project to create a new programming language, moving to ICL (International Computers Limited) to work on the VMEB operating system with 15-16 protection rings, using traffic lights mounted on walls to indicate system status (red for down, amber for booting, green for operational), Maurice's interest in formal methods and the Vienna Development Method (VDM), working at Sterling University on formal specification and stepwise refinement, programming in HyperTalk for HyperCard in the 1990s, the Post Office Horizon scandal where a flawed computer system led to false fraud accusations against hundreds of sub-postmasters, Maurice's early Java programming creating a local information service distributed on CDs in the mid-1990s, discussion about offline-first principles and caching data that are still relevant today, Maurice being a "singleton" as the only Maurice Naftalin on the internet

    Maurice Naftalin on twitter: @mauricenaftalin
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    1 h et 6 min
  • Injection Without Reflection

    Injection Without Reflection
    Jun 7 2025
    An airhacks.fm conversation with David Kral (@VerdentDK) about: Helidon Declarative as a new feature set for Helidon SE, build-time dependency injection with zero reflection capability, code generation approach that creates actual Java source files instead of bytecode manipulation, Service Registry as an enhanced Java service loader with ordering capabilities, compatibility with GraalVM for native image compilation, JPMS (Java Platform Module System) compatibility, the Maven plugin that eliminates reflection completely, HTTP module for declarative REST endpoints, REST client generation, metrics and fault tolerance support, interceptors for modifying service creation behavior, annotation mapping to support standard JSR-330 annotations like @Inject, comparison of performance between Helidon SE and MP flavors, use cases for serverless and CLI applications, the incubating status of Helidon Declarative with full release planned for Helidon 5, the ability to see and modify generated code for better debugging and transparency, the possibility to copy generated code to take ownership and remove dependencies, the value of using standard annotations for better portability between frameworks

    David Kral on twitter: @VerdentDK
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    57 min
  • About Amazon Corretto

    About Amazon Corretto
    Jun 1 2025
    An airhacks.fm conversation with Volker Simonis (@volker_simonis) about: explanation of corretto as an openJDK distribution with support for multiple platforms and Java versions, insights into the build and certification process for Corretto releases including TCK testing, discussion of the security vulnerability group and embargo process for Java security fixes, explanation of how Amazon contributes features back to OpenJDK, detailed overview of Amazon's contributions including async logging for improved performance, Project Lilliput for compact object headers reducing memory usage by 10-50%, Generational Shenandoah garbage collector achieving sub-millisecond pause times, comparison between ZGC and Shenandoah garbage collectors, discussion about the Graal compiler and Project Galahad to reintroduce it into OpenJDK, mention of Amazon being the second largest contributor to OpenJDK after Oracle, information about the Amazon Corretto Crypto Provider for improved encryption performance, introduction of arctic GUI testing tool for Java, insights into the collaborative nature of the OpenJDK ecosystem despite competition between vendors

    Volker Simonis on twitter: @volker_simonis
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    1 h et 6 min