What are different implementations of ApplicationContext ?

The 3 commonly used implementation of ApplicationContext are :

1. ClassPathXmlApplicationContext

It Loads  context definition from an XML file located in the classpath, treating context definitions as classpath resources.

The application context is loaded from the application's classpath by using the code :

Example

ApplicationContext context = 

            new ClassPathXmlApplicationContext("bean.xml");

ApplicationContext context = 

            new ClassPathXmlApplicationContext(

                  new String[] {"services.xml", "dao.xml"});

2. FileSystemXmlApplicationContext

It loads context definition from an XML file in the filesystem.

The application context is loaded from the file system by using the code.

Example

ApplicationContext context = 

            new FileSystemXmlApplicationContext("bean.xml");

3. XmlWebApplicationContext

It loads context definition from an XML file contained within a web application.