1,031 words
AI 에이전트에게 API 키를 노출하지 않고 안전하게 사용하는 방법
핵심 요약: AI 에이전트가 API 키를 직접 보지 않고도 사용하게 만들려면, 에이전트의 컨텍스트에는 키의 이름만 전달하고 실제 값은 모델 바깥에서 확인(resolve)하도록 구성해야 합니다. 대표적인 방법은 세 가지입니다. 에이전트가 참조만 하고 절대 출력하지 않는 환경 변수, 시크릿 관리자(Secret…
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213 words
getCurrentPosition() Has No Default Timeout. That's the Trap.
The ticket read: "location button sometimes just spins forever." Not a crash, not an error toast — just a spinner that never stopped. QA couldn't reproduce it. It worked every time on the office Wi-Fi, every time on a laptop, every…
491 words
Location permission denied: what your Android app does next is the real design
Someone opens a café app and taps "Find cafés near me." Android asks for location access. They choose "Don't allow." Sometimes the answer is: nothing. A dead-end screen, a "location is required" message, maybe a button that fires the same…
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Ports and Adapters (Hexagonal Architecture)
Have you ever wondered how you could isolate your application from external concerns, like which database to use? Or isolating it who is consuming your application? Domain-centric architectures, like the Ports and Adapters, allow you to achieve just that. The…
604 words
More of the Java API, and an Experiment With Unity Games
This post is about code you already have: Java code you want to reuse, and, as an experiment, Unity games. What is Codename One? Codename One is an open-source framework for building native iOS, Android, desktop, and web apps from…
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Whitelabel pages are a bad Jackson inventory
A Spring Boot error page can reveal that an application is running, but it cannot identify the JSON parser version behind that application. This distinction matters after a cluster of jackson-databind vulnerabilities with current fixes for 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1, plus later fixes…
1,770 words
Kotlin Multiplatform vs Flutter vs RN: 3 Stacks [2026]
If you only care about the two UI-first options, our earlier React Native vs Flutter breakdown covers that duel directly. This piece asks a different question: should a team share logic only, share logic and UI, or share nothing but…
722 words
Advanced Java - Books Outside the Core
Java has a strong claim to being the most widespread programming language. Given its popularity, it's not surprising that our reviewers have scrutinized over 50 books relating to it, both new and classic. This is the pick of recommended titles for…
823 words
Java Books For Going Further
Java is one of, if not the most, widespread programming language. Given its popularity, it's not surprising that our reviewers have scrutinized over 50 books relating to it, both new and classic. This is the pick of recommended titles for programmers…
262 words
Java in a Nutshell, 9th Ed (O'Reilly)
Programming book reviews, programming tutorials,programming news, C#, Ruby, Python,C, C++, PHP, Visual Basic, Computer book reviews, computer history, programming history, joomla, theory, spreadsheets and more. This book explains Java through to Java 25, and provides a learning path for…
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JVM releases, Spring ecosystem, build tooling, and performance.
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