File: context.xml 
 
<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" 
    "http://www.springframework.org/dtd/spring-beans.dtd"> 
 
<beans> 
 
  <bean id="w" class="java.lang.String"> 
  </bean> 
 
  
  <bean id="allBeansLister" class="AllBeansLister"/> 
 
</beans> 
 
 
File: Main.java 
 
import org.springframework.beans.BeansException; 
import org.springframework.beans.factory.config.BeanFactoryPostProcessor; 
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; 
import org.springframework.beans.factory.xml.XmlBeanFactory; 
import org.springframework.core.io.ClassPathResource; 
 
class Main { 
  public static void main(String args[]) throws Exception { 
    XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource("context.xml")); 
    factory.getBean("w"); 
    AllBeansLister lister = new AllBeansLister(); 
    lister.postProcessBeanFactory(factory); 
  } 
} 
class AllBeansLister implements BeanFactoryPostProcessor { 
 
  public void postProcessBeanFactory(ConfigurableListableBeanFactory factory) 
      throws BeansException { 
     
    System.out.println("The factory contains the followig beans:"); 
    String[] beanNames = factory.getBeanDefinitionNames(); 
    for (int i = 0; i < beanNames.length; ++i) 
      System.out.println(beanNames[i]); 
  } 
} 
 
 
 
 
            
       
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