A bean scope refers to the lifecycle of a bean. How long the bean lives. How many instances need to be created.
Default scope is singleton.
Spring container creates one instance of bean shared across.
code example
Singleton
Prototype
Bean Lifecycle:
Spring Container starts beans are instantiated -> dependency Injected -> Internal spring processing -> custom init method -> Bean ready to use -> Application Shut down (custom method to close bean is executed before application shutdown).
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