Dev Tools — Blog
Decompiling Java JAR Files: A Step-by-Step Guide for Inspection and Recovery
Learn how to inspect and decompile Java JAR files step by step, from extracting classes to comparing decompilers and reading bytecode when needed.
Read more →How to Filter Arrays with JSONPath: Practical Examples for Real JSON Data
Learn how to filter JSON arrays with JSONPath using equality, numeric comparisons, nested fields, existence checks, and real API examples.
Read more →Using JSONPath in JavaScript, Python, and Java: Libraries, Syntax, and Pitfalls
Compare JSONPath libraries in JavaScript, Python, and Java, including syntax differences, return modes, filters, and portability pitfalls.
Read more →JSONPath vs JMESPath vs SQL/JSON: Choosing the Right JSON Query Language
Compare JSONPath, JMESPath, and SQL/JSON by syntax, filters, portability, and real-world use cases in APIs, cloud tooling, and databases.
Read more →Decompiling Java Class Files: A Practical Workflow for Real-World Investigations
Learn a practical workflow to decompile Java class files with browser tools, IntelliJ, CFR, and bytecode checks so you can debug, audit, and verify behavior faster.
Read more →Java Bytecode Structure Explained: Constant Pool, Descriptors, and Stack Frames
Understand Java bytecode structure, constant pool entries, descriptors, stack frames, and invokedynamic so you can inspect class files with confidence.
Read more →How Java Class File Decompilation Works: Bytecode, invokedynamic, and StringConcatFactory
Learn how to decompile class files, how Java 9 StringConcatFactory uses invokedynamic, and how decompilers reconstruct readable Java from bytecode.
Read more →Comparing JSON Objects: Techniques for API Debugging and Config Management
Learn how to compare JSON objects effectively for API debugging, config management, and CI/CD pipelines. Covers deep diff, JSON Patch, and best practices.
Read more →Converting Between JSON, YAML, CSV, and XML: A Practical Guide to Data Format Conversion
Learn how to convert data between JSON, YAML, CSV, and XML formats. Understand conversion challenges, data loss risks, and best practices for each format.
Read more →JSON Patch RFC 6902 Guide: Add, Replace, Paths, and Target Rules
Understand JSON Patch RFC 6902 fast: add inserts before array indexes, replace requires the target path to exist, and paths use JSON Pointer RFC 6901.
Read more →Real-World JSON Schema Examples: Practical Patterns for APIs, Configs, and Catalogs
Explore practical JSON Schema examples for user registration APIs, product catalogs, app configs, and CI/CD pipelines with reusable patterns.
Read more →JSON Schema Validation: A Complete Guide to Validating JSON Data
Learn JSON Schema Draft 7 validation including types, required fields, patterns, and composition keywords. With practical examples for API contracts.
Read more →JSONPath Query Syntax Guide: Expressions, Filters, and Practical Examples
Learn JSONPath syntax for querying JSON data: root, child, recursive, wildcard, filters, slicing, and real-world examples compared with XPath and jq.
Read more →YAML vs JSON: When to Use Which Format for Configuration, APIs, and Infrastructure
Compare YAML and JSON across syntax, readability, security, and tooling. Learn when each format excels for APIs, Kubernetes, CI/CD, and configuration files.
Read more →Base64 in Web Development: Data URIs, JWTs, and API Authentication
Practical guide to Base64 in web development covering data URIs, JWT tokens, HTTP Basic Auth, browser APIs, file encoding for APIs, and common pitfalls.
Read more →JSON Best Practices for API Development: Responses, Errors, and Performance
Practical JSON API best practices: response envelopes, naming conventions, error formats, pagination, versioning, security, and performance for REST APIs.
Read more →Understanding Base64 Encoding: How It Works and When to Use It
Learn how Base64 encoding works, why it exists, its variants like URL-safe and MIME, common use cases, size overhead, and security misconceptions in this complete guide.
Read more →Understanding JSON: Structure, Syntax, and Common Errors Explained
Complete guide to JSON syntax, data types, common parsing errors, and how JSON compares to YAML, XML, and other formats. With code examples.
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