BAEL-3832: Difference between BeanFactory and ApplicationContext completed

spring-core-3/src/main/java/com/baeldung/ioccontainer/bean/CustomBeanFactoryPostProcessor.java

@@ -0,0 +1,16 @@
+package com.baeldung.ioccontainer.bean;
+
+import org.apache.log4j.LogManager;
+import org.apache.log4j.Logger;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+
+public class CustomBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
+    static final Logger LOGGER = LogManager.getLogger(CustomBeanPostProcessor.class.getName());
+
+    @Override
+    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
+        LOGGER.info("BeanFactoryPostProcessor is Registered");
+    }
+}

spring-core-3/src/main/java/com/baeldung/ioccontainer/bean/CustomBeanPostProcessor.java

@@ -0,0 +1,17 @@
+package com.baeldung.ioccontainer.bean;
+
+import org.apache.log4j.LogManager;
+import org.apache.log4j.Logger;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+
+public class CustomBeanPostProcessor implements BeanPostProcessor {
+
+    static final Logger LOGGER = LogManager.getLogger(CustomBeanPostProcessor.class.getName());
+
+    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
+        LOGGER.info("BeanPostProcessor is Registered Before Initialization");
+        return bean;
+    }
+
+}

spring-core-3/src/main/java/com/baeldung/ioccontainer/bean/Student.java

@@ -0,0 +1,12 @@
+package com.baeldung.ioccontainer.bean;
+
+import org.apache.log4j.LogManager;
+import org.apache.log4j.Logger;
+
+public class Student {
+    static final Logger LOGGER = LogManager.getLogger(Student.class.getName());
+
+    public void postConstruct() {
+        LOGGER.info("Student Bean is initialized");
+    }
+}