7 BeanFactory And ApplicationContext скачать в хорошем качестве

7 BeanFactory And ApplicationContext

Oh this is a classic Spring interview comparison. If you answer this cleanly, interviewers are happy. Let’s keep it sharp and memorable. 😄 ________________________________________ 🔹 BeanFactory vs ApplicationContext (Short Idea) Both are Spring containers, but ApplicationContext is more powerful and commonly used than BeanFactory. ________________________________________ 🔹 Main Differences (Interview Table) Feature BeanFactory ApplicationContext Type Basic container Advanced container Initialization Lazy (beans created when requested) Eager (beans created at startup by default) Performance Lightweight, less memory Slightly heavier, more features Dependency Injection Yes Yes AOP Support ❌ No built-in support ✅ Yes Event Handling ❌ No ✅ Yes Internationalization (i18n) ❌ No ✅ Yes BeanPostProcessor, etc. Limited support Full support Usage in real projects Rare Most commonly used ________________________________________ 🔹 Simple One-Line Difference (Interview Ready) BeanFactory is a basic Spring container with lazy loading, while ApplicationContext is an advanced container that supports eager loading, AOP, events, and internationalization. ________________________________________ 🔹 2-Line Strong Answer BeanFactory provides basic IoC and lazy initialization, whereas ApplicationContext is an enterprise-level container that supports eager initialization, AOP, event handling, and other advanced features. In real applications, ApplicationContext is preferred. ________________________________________ 🔹 Code-Level Difference (Optional to Mention) // BeanFactory (old style) BeanFactory factory = new XmlBeanFactory(new FileSystemResource("beans.xml")); // ApplicationContext (commonly used) ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml"); ________________________________________ 🔹 Very Common Follow-up Questions Q: Which one should we use in real projects? 👉 Answer: ApplicationContext Q: Which one loads beans lazily? 👉 Answer: BeanFactory Q: Which one supports AOP and events? 👉 Answer: ApplicationContext ________________________________________ 🔹 One Smart Line to Impress Interviewer 😎 ApplicationContext is a superset of BeanFactory and is the preferred container for enterprise Spring applications. ________________________________________ If you want, I can also give you: • Tricky question: Is ApplicationContext really always eager? • Bean lifecycle in both containers • Real-world scenario-based interview questions