# Spring MVC #### What is a bean ? Spring IoC container uses a **configuration metadata** (which is provided in the form of an xml file or using annotations) to instantiate **objects**, which are used by our java application. These objects are called bean. **configuration metadata** contains following properties and their value: * class : which java class to use to instantiate object * name: unique id/name that will be used to request this bean * scope, constructor-arg, properties, autowiring mode, lazy-initialization mode, initialization method, destruction method etc. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://blog.gomchik.com/tech/java/spring-mvc.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.