How to initialize and destroy beans in Spring?

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When creating an instance of a bean you might need to do some initialization to the bean. Likewise, when the bean is no longer needed and removed from the Spring container you might want to do some cleanup routine or destroy the bean.
To do this initialization and destroy routine you can use the init-method and destroy-method attribute when declaring a bean in spring configuration using the <bean> element.
By defining the init-method and destroy-method it will allow the Spring Container to call the initialization method right after the bean created. And just before the bean removed and discarded from the container, the defined destroy method will be called. Let's see some code snippet as an example.  more...