May 14, 2025 · Fundamentals

How to Instantiate Java Objects Without Constructors Using Objenesis

This tutorial explains how Objenesis enables Java objects to be instantiated without invoking constructors, covering traditional object creation, the library’s internal mechanisms, Maven setup, usage examples with ObjenesisStd, ObjenesisSerializer, and ObjenesisHelper, advanced scenarios, best practices, and considerations for safe adoption.

JavaObject InstantiationObjenesis

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How to Instantiate Java Objects Without Constructors Using Objenesis

Spring Full-Stack Practical Cases

Dec 9, 2024 · Backend Development

SpringBoot CGLIB Proxy Returns Null for Initialized Fields – Causes and Fixes

This article explains why a SpringBoot service field initialized with a value becomes null when accessed through a CGLIB proxy, analyzes the role of final methods and Objenesis in the proxy creation process, and provides three practical solutions to prevent the null value.

ObjenesisProxySpringBoot

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SpringBoot CGLIB Proxy Returns Null for Initialized Fields – Causes and Fixes