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Java Articles by Foojay.io

September, 2025

  • 9 September

    Building REST APIs in Java with Spring Boot

    Author: Tim Kelly Original post on Foojay: Read More Table of Contents How can Spring help? Prerequisites Creating our appConnecting our database Our Book model Book repository Our REST controller CreateReadUpdateDeleteAdding DTOs and validation BookRequest BookResponse Updating the controller Testing the API Run the API Create Read Update Delete Conclusion REST has become the default choice for building web services, …

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  • 8 September

    Spec-Driven Development with AI: A New Approach and a Journey into the Past

    Author: Simon Martinelli Original post on Foojay: Read More Table of Contents The Problem with Code-Centric DevelopmentRequirements as the Single Source of Truth The Complete Workflow Everything is Code, Everything is Versioned AI as the Consistency Engine The Structure: Independent EpicsA Real Example: System Use Case SpecificationThe ResultsWhy This Works for Business ApplicationsGetting StartedThe Future of Business Application Development The …

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  • 4 September

    MongoDB Aggregations: Organizing Recipes by Meal Type with $group

    Author: Justin Jenkins Original post on Foojay: Read More Table of Contents Why Use $group for Organizing Recipes?Setting Up the DataUsing $group to Organize Recipes by Type Step 1: Grouping Recipes by Type Step 2: Including Recipe Details in Each Group Grouping Recipes by Tags Step 1: Using $unwind to Break Down Tags Advanced Tip: Using $match for Specific FiltersConclusion …

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  • 3 September

    KCDC 2025

    Author: Nicolas Frankel Original post on Foojay: Read More Table of Contents The talks Home Lab – Private Cloud on a budget Loom is more than virtual threads: Structured Concurrency and Scoped Values 15 Productivity tips to accelerate your Apache Maven builds Take the Polar Plunge: A Fearless Introduction to Apache Iceberg® Epic App Performance Starts with the Database The …

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  • 2 September

    JC-AI Newsletter #4

    Author: Miro Wengner Original post on Foojay: Read More Table of Contents Previous: 14 days have passed and it’s time for a new batch of readings that could shape developments in the field of artificial intelligence. The current newsletter vol. 4 offers us a closer look at several different areas of artificial intelligence. We start with the topic of energy …

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  • 2 September

    Queryable Encryption With Spring Data MongoDB: How to Query Encrypted Fields

    Author: Ricardo Mello Original post on Foojay: Read More Table of Contents Why Queryable Encryption?A quick look at Spring Data MongoDBUse case: HR system with encrypted fieldsSetting up the projectConfiguring dependencies and properties Adding mongodb-crypt Application.yml configuration Accessing properties in the code Building the application layers The domain model The repository The service The controller Setting up encryptionConfiguring the MongoDB …

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  • 1 September

    AI4Devs Schedule Published

    Author: Jonathan Vila Original post on Foojay: Read More Table of Contents Event Details A Program for Every Developer Meet the Speakers & Sessions Why This Year is Special Join Us 🚀 The AI4Devs Amsterdam 2025 Schedule is Live! The wait is over—AI4Devs Amsterdam has just published its official schedule, and it’s packed with talks that every developer working with …

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August, 2025

  • 31 August

    JavaFX Links of August 2025

    Author: Frank Delporte Original post on Foojay: Read More Table of Contents CoreApplicationsGamesComponents, Libraries, ToolsPodcasts, Videos, BooksTutorialsMiscellaneousJFX Central Here are the links shared on jfx-central.com in the August summary. Did we miss anything? Is there anything you want to have included in one of the next overviews? Let us know via links@jfx-central.com. Core Announced by Johan Vos: “JavaFX now has …

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  • 29 August

    Boosting Kafka Latency Performance by 3x with Zing JVM and AutoMQ

    Author: John Ceccarelli Original post on Foojay: Read More Table of Contents Why is Latency so Important to Kafka?Introduction of AutoMQIntroducing Azul Zing Builds of OpenJDKPerformance Test & Explanation Test Environment Configuration Latency: Taming the Tail CPU Utilization: Do More with Less Future Outlook Why is Latency so Important to Kafka? The importance of low latency in Kafka stems from …

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  • 29 August

    Taking Java Arrays to Another Dimension

    Author: Simon Ritter Original post on Foojay: Read More Table of Contents What is a multidimensional array in Java?Declaring a multidimensional arrayMixing Bracket PositionsCreating a multidimensional arrayDefault values in arraysUnderstanding jagged arraysUnderstanding JVM bytecodes for array creationBytecode for arrays of primitivesBytecode for arrays of objectsBytecode for multidimensional arraysPerformance considerations with multidimensional arraysBenchmarking performance differencesConcluding thoughts Explore the intricacies of Java’s …

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