Name some of the design patterns used in Spring Framework.

Below are some of the design pattern used in spring framework.

• Dependency injection Center to the whole BeanFactory / ApplicationContext concepts.
• Factory pattern BeanFactory for creating instance of an object.
• Singleton beans defined in spring config files are singletons by default.
• Template method used extensively to deal with boilerplate repeated code. For example RestTemplate, JmsTemplate, JpaTemplate.
• Front Controller Spring provides DispatcherServlet to ensure an incoming request gets dispatched to your controllers.
• View Helper Spring has a number of custom JSP tags, and velocity macros, to assist in separating code from presentation in views.
• Proxy used in AOP and remoting.

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