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netproxy4d ago · 5 min read

Why PDF Annotations Break: The Coordinate System Nobody Warns You About

You draw a highlight on a PDF, save it, and open the file in another reader. The highlight is floating two centimeters away from the text it was supposed to mark. Nothing is corrupted. The file is val

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Manikandan SSep 8 · 5 min read

Wrapper Classes and Java Annotations in Java

Introduction Java provides Wrapper Classes to represent primitive data types as objects. Java also provides Annotations to add metadata to classes, methods, variables, and other program elements. In t

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MOR SoftwareAug 14 · 10 min read

A Practical Guide to Data Annotation in 2026

Anyone weighing whether to get into data annotation, whether through platforms or as part of an in-house team, usually starts with the same question: what does this work actually involve day to day? T

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kramgyorgyMay 13 · 8 min read

MCP annotations are a UX layer, not a security layer

Published May 5, 2026 by gyorgy When the Model Context Protocol added tool annotations like readOnlyHint, destructiveHint, and idempotentHint, a lot of MCP server authors and host implementers read th

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Nandini KarnakotaApr 28 · 3 min read

Spring Boot Annotations Explained Simply: From Basics to REST APIs

When I first started learning Spring Boot, annotations felt like magic. Instead of writing long XML configurations, everything was simplified into clean, readable code. But behind that simplicity lies

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devMar 29 · 4 min read

Behavioral Annotations: Why readonly and destructive guide LLM Planning

In a previous post, we discussed how Schemas act as the "Postman" of the apcore ecosystem—ensuring that data is delivered in the correct format. But knowing how to deliver a message isn't enough for a

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Abheeshta PFeb 12 · 3 min read

Java Series #17: Spring Boot Essentials- Annotations, Validation & Transactions

Spring Boot looks simple on the surface — just add a dependency, write a controller, and run. But behind that simplicity is a powerful architecture built on IoC, auto-configuration, validation, and transaction management. 1️⃣ @SpringBootApplication –...

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José DíazDec 24, 2025 · 4 min read

Jakarta Annotations en Quarkus: Gestión del Ciclo de Vida y Anotaciones Personalizadas

Introducción Jakarta Annotations proporciona anotaciones estándar para gestionar el ciclo de vida de componentes y crear anotaciones personalizadas. En Quarkus, estas anotaciones están completamente soportadas y funcionan de forma integrada con CDI. ...

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Aquib JavedDec 20, 2025 · 4 min read

Mastering Custom Validation Annotations in Spring Boot 3: Beyond @NotNull

Standard Jakarta Bean Validation annotations often fail to capture complex, multi-field business rules. This guide explains how to implement the ConstraintValidator interface to create reusable, class-level custom annotations in Spring Boot.Anyone wh...

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Ashifur RahamanDec 19, 2025 · 5 min read

EF Core: Mapping & Constraints via Data Annotations

Data Annotations are attribute-based configurations applied directly to entity classes and properties. They serve two purposes: defining the database schema (DDL) and providing runtime validation for ASP.NET Core. Namespaces Required: using System.Co...

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