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This tutorial demonstrates how to use JXLS 2.11.0 for complex Excel exports in Java, covering Maven setup, template creation with xlsx format, and key expressions like jx:area, jx:each, jx:mergeCells, and dynamic columns with code examples.
This article explains the progression from Prompt Engineering to Context Engineering to Harness Engineering, using analogies and concrete examples to show how each layer addresses a different challenge: task clarity, information access, and controllable execution in production workflows, with practical frameworks for each stage.
This analysis examines IntelliJ IDEA's position in the 2026 AI coding landscape, detailing JetBrains' three major releases integrating AI Agent Junie, comparing traditional IDE strengths in complex engineering against AI-native editors like Cursor, and revealing how developer workflows are diverging rather than abandoning IDEA entirely.
JetBrains' 2026 survey of 15,000+ developers shows 90% use AI coding agents weekly, with Claude Code adoption surging to 39% globally and 47% in the US, while Cursor adoption declines despite high awareness; the article argues code generation speed doesn't equal delivery speed, and developers' core value shifts to verifying, understanding, and taking responsibility for AI-generated code.
This comprehensive guide demonstrates why Server-Sent Events (SSE) is the superior choice over WebSocket for unidirectional server push scenarios like AI token streaming, covering Spring Boot integration patterns, production hardening (async thread pools, Nginx buffering, heartbeats, reconnection), and cluster deployment with Redis Pub/Sub.
Java 27 introduces JFR in-process data redaction (JEP 536) that automatically masks sensitive environment variables, system properties, and JVM arguments matching default glob patterns like *password*, *secret*, *token*, and *api*key*, with support for custom patterns via FlightRecorderOptions, though custom JFR events and child processes remain unprotected.
This article explains why SQL NULL represents an unknown state rather than a value, how three-valued logic (TRUE, FALSE, UNKNOWN) breaks equality comparisons, and demonstrates practical pitfalls with WHERE clauses, NOT IN subqueries, aggregate functions, and MySQL's NULL-safe operator.
Spring Boot 4.1 introduces InetAddressFilter to block internal network access at the HTTP client level, replacing scattered string checks with a centralized allowlist approach. The article demonstrates configuring RestClient.Builder for external-only access, adding URI validation, disabling auto-redirects, setting timeouts, limiting response size, and enforcing secure patterns via tests and code reviews.
The article analyzes Jev, a new 'System One' AI model from TypeSafe AI, its viral launch, criticism from Redis creator antirez over hype vs. technical substance, a 2-hour open-source reproduction (kev) that matches Jev on training data but fails on out-of-domain generalization, revealing that Jev's true moat lies in calibration engineering rather than model architecture.
This article explains why regularly restarting your router clears temporary system states, resolves Wi-Fi channel interference, improves security by terminating suspicious connections, and distinguishes restart from factory reset, recommending a monthly restart as a simple maintenance habit.
