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Explain lazy-init attribute of bean tag in Spring.

lazy-init attribute of <bean> tag is used to specify whether a spring bean is to be lazily initialized or not.

BeanFactory initializes all the spring beans lazily while ApplicationContext initializes all singleton spring beans eagerly. To make ApplicationContext to initialize the all the spring bean lazily, lazy-init attribute need to be set to true.

Following are the allowed values for lazy-init attribute.

true - lazy, IOC container creates the bean when it is first requested.

false - eager, IOC container creates the bean at startup.

default - refers to the default-lazy-init attribute specified for the <beans>

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