public class TestBean { 
    private String name; 
    public TestBean() { 
       System.out.println("constructor of TestBean is invoked"); 
    } 
    public void setName(String name) { 
       this.name = name; 
    } 
    public String getName() { 
       return name; 
    } 
} 
public class BeanFactoryExample { 
    public static void main(String[] args) { 
        Resource resource = new ClassPathResource("spring-config.xml"); 
        BeanFactory factory = new XmlBeanFactory(resource); 
        TestBean testBean = (TestBean) factory.getBean("testBean"); 
        System.out.println("The name is : " + testBean.getName()); 
    } 
} 

public class ResourceLoaderExample { 
     public static void main(String[] args) throws IOException { 
         ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
         ResourceLoader loader = context; 
         Resource resource = loader.getResource("classpath:test.txt"); 
         InputStream inputStream = resource.getInputStream(); 
         BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); 
         String line; 
         while ((line = reader.readLine()) != null) { 
            System.out.println(line); 
         } 
         reader.close(); 
    } 
} 

<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource"> 
    <property name="basename" value="messages" />
</bean> 

public class MessageSourceExample { 
    public static void main(String[] args) { 
       ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
       MessageSource messageSource = (MessageSource) context.getBean("messageSource");
       String message = messageSource.getMessage("test", null, Locale.getDefault());
       System.out.println("The message is : " + message); 
    } 
} 

public class MyApplicationEvent extends ApplicationEvent { 
     public MyApplicationEvent(Object source) { 
         super(source); 
     } 
} 
public class PublishEventExample { 
     public static void main(String[] args) { 
         ConfigurableApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
         context.addApplicationListener(new ApplicationListener<MyApplicationEvent>() {
             @Override 
             public void onApplicationEvent(MyApplicationEvent event) {
                 System.out.println("MyApplicationEvent received!"); 
             } 
         }); 
         context.publishEvent(new MyApplicationEvent("Hello World!")); 
         context.close(); 
   } 
} 

public class EnvironmentExample { 
    public static void main(String[] args) { 
         ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
         Environment environment = context.getEnvironment(); 
         System.out.println("The environment is : " + environment.getProperty("os.name")); 
    } 
} 

public class ListableBeanFactoryExample { 
    public static void main(String[] args) { 
       ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
       ListableBeanFactory beanFactory = context.getBeanFactory(); 
       String[] beanNames = beanFactory.getBeanDefinitionNames(); 
       for (String beanName : beanNames) { 
           System.out.println(beanName); 
       } 
   } 
} 

public class AutowireCapableBeanFactoryExample { 
    public static void main(String[] args) { 
        ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
        AutowireCapableBeanFactory beanFactory = context.getAutowireCapableBeanFactory();
        TestBean testBean = new TestBean(); 
        beanFactory.autowireBean(testBean); 
        System.out.println("The name is : " + testBean.getName()); 
    } 
} 

public class BeanDefinitionRegistryExample { 
    public static void main(String[] args) { 
        XmlBeanFactory beanFactory = new XmlBeanFactory(new ClassPathResource("spring-config.xml")); 
        BeanDefinitionRegistry registry = (BeanDefinitionRegistry) beanFactory;
        BeanDefinition beanDefinition = new RootBeanDefinition(TestBean.class); 
        registry.registerBeanDefinition("testBean", beanDefinition); 
        TestBean testBean = (TestBean) beanFactory.getBean("testBean");
        System.out.println("The name is : " + testBean.getName()); 
    } 
} 

public class ConfigurableApplicationContextExample { 
    public static void main(String[] args) { 
       ConfigurableApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml"); 
       ConfigurableEnvironment environment = context.getEnvironment(); 
       environment.setActiveProfiles("dev"); 
       context.refresh(); 
       TestBean testBean = (TestBean) context.getBean("testBean"); 
       System.out.println("The name is : " + testBean.getName()); 
   } 
}