Why Lombok’s @Builder Drops Default Values and How to Fix It

This article walks through a real‑world NPE caused by Lombok’s @Builder ignoring field initializers, explains the underlying double‑initialisation bug, shows how @Builder.Default restores the defaults, and outlines Lombok’s compile‑time annotation processing mechanism.

Builder PatternCompile-time AnnotationDefault Values

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Why Lombok’s @Builder Drops Default Values and How to Fix It

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Jul 21, 2021 · Mobile Development

Understanding and Implementing Compile-Time Annotations in Android Development

The article explains how compile‑time annotation processors in Android replace costly runtime reflection by generating binding classes during build time, showing step‑by‑step code examples, JavaPoet/KotlinPoet usage, and the performance benefits for cleaner, faster, maintainable apps.

AndroidAnnotation ProcessingCompile-time Annotation

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Understanding and Implementing Compile-Time Annotations in Android Development