ApplicationContext appCon = new ClassPathXmlApplicationContext

("applicationContext.xml");

This line of code creates a new instance of the ApplicationContext interface and initializes it with the configuration information from the "applicationContext.xml" file located on the classpath. The ApplicationContext is a central interface in the Spring framework that provides access to the Spring container and its beans. By using the ClassPathXmlApplicationContext implementation of the ApplicationContext interface, we can load the XML configuration files from the classpath and create a new Spring container to manage our beans.