Spring Container Core Implementation Principles
Container Architecture Fundamentals
public class CustomApplicationContext {
private Class configurationClass;
private Map<String, BeanDefinition> definitionRegistry = new ConcurrentHashMap<>();
private Map<String, Object> singletonCache = new ConcurrentHashMap<>();
public CustomApplicationContext(Class ...
Posted on Sat, 07 Nov 2026 16:36:12 +0000 by stubarny
Lombok Builder Annotation Pitfall: Why Default Field Values Disappear
A stable public service interface, previously maintained and later handed over, started throwing NullPointerException errors when a new consumer system integrated with it. The error occurred within a conditional block:
if (req.getFlag()
&& req.getName() != null
&& req.getType() != null) {
// execute business logic
...
Posted on Thu, 07 May 2026 07:18:21 +0000 by pnoeric