what are ioc containers in spring?
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Spring - IoC Containers. The Spring container is at the core of the Spring Framework. The container will create the objects, wire them together, configure them, and manage their complete life cycle from creation till destruction. The Spring container uses DI to manage the components that make up an application.
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['Spring Boot Starters.', 'Spring Boot AutoConfigurator.', 'Spring Boot CLI.', 'Spring Boot Actuator.']
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DispatcherServlet as the Heart of Spring MVC mapping an HTTP request to a certain processing method. parsing of HTTP request data and headers into data transfer objects (DTOs) or domain objects. model-view-controller interaction. generation of responses from DTOs, domain objects, etc.
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Input/output completion port (IOCP) is an API for performing multiple simultaneous asynchronous input/output operations in Windows NT versions 3.5 and later, AIX and on Solaris 10 and later. An input/output completion port object is created and associated with a number of sockets or file handles.
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Working with Spring Data Repositories. The goal of Spring Data repository abstraction is to significantly reduce the amount of boilerplate code required to implement data access layers for various persistence stores. ... It uses the configuration and code samples for the Java Persistence API (JPA) module.
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The DI idea is that, instead of your object creating an object it needs (say by using new to instantiate it), this needed object - a dependency - is handed to your object, typically using the constructor or a setter method. If you autowire, you're injecting a dependancy.
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This is typically where you would configure application-wide stuff, such as the $routeProvider. Stuff that needs to be configured before the services are created. Run blocks (registered with module. run() ) get executed after the injector has all the providers.
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['Encapsulation – Encapsulation is capturing data and keeping it safely and securely from outside interfaces.', 'Inheritance- This is the process by which a class can be derived from a base class with all features of base class and some of its own. ... ', 'Polymorphism- This is the ability to exist in various forms.']
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Spring is an open-source, light-weight and cross-platform application framework for easy application development as it takes care of infrastructure and developers need to concentrate on business logic whereas Hibernate is an entirely different framework for ORM (object-relational mapping) between Java classes and ...
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Spring AOP is proxy-based. Spring uses either JDK proxies (preferred wheneven the proxied target implements at least one interface) or CGLIB proxies (if the target object does not implement any interfaces) to create the proxy for a given target bean.
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Container Registry is enabled on GitLab.com; it's completely free, and you can start using it right now!
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The Spring IoC container The IoC container receives metadata from either an XML file, Java annotations, or Java code. The container gets its instructions on what objects to instantiate, configure, and assemble from simple Plain Old Java Objects (POJO) by reading the configuration metadata provided.
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@Component is a generic stereotype for any Spring-managed component or bean. @Repository is a stereotype for the persistence layer. @Service is a stereotype for the service layer. @Controller is a stereotype for the presentation layer (spring-MVC).
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['@Controller.', '@RequestMapping.', '@PathVariable.', '@RequestParam.', '@ModelAttribute.', '@RequestBody and @ResponseBody.', '@RequestHeader and @ResponseHeader.']
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An IoC container is a component that lets us register our Concrete class dependencies with our contracts i.e. interfaces so that for any given interface, the registered concrete class will be instantiated. ... It is just a simple exercise to understand and take a sneak peek the inner workings of IoC containers.
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It is the heart of the Spring Framework. The IoC container receives metadata from either an XML file, Java annotations, or Java code. The container gets its instructions on what objects to instantiate, configure, and assemble from simple Plain Old Java Objects (POJO) by reading the configuration metadata provided.
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['Language Fundamentals.', 'OOPs Concepts.', 'Interface and Abstract class.', 'Exception Handling.', 'Collection Framework.', 'Multithreading.', 'Packages.', 'Swings.']