21⟩ What is a nested bean?
Scopes the bean within the bean that uses it. One less bean id in the set of bean names.
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“JMX Interview Questions and Answers will guide us now that Java Management Extensions (JMX) is a Java technology that supplies tools for managing and monitoring applications, system objects, devices such as printers and service oriented networks. Those resources are represented by objects called MBeans, so learn more about JMX by this JMX Interview Questions with Answers guide”
30 JMX Questions And Answers
22⟩ List 2 examples of anonymous bean?
Two examples:
☛ Nested or inner beans
☛ Configuration beans
23⟩ What are the 5 scopes defined in Spring?
5 scopes defined in Spring:
☛ Singleton
☛ Prototype
☛ Session - only valid in a Web application context
☛ Request - ditto
☛ Custom
24⟩ How does a Spring Factory Bean work?
It is created by Spring automatically, any setters are called on the factory then its getObject() method is called to allocate the actual bean.
25⟩ What is the advantage of constructor dependency injection?
Here are a few advantages:
☛Constructor
☛Mandatory
☛Mutable
☛Natural Java approach.
26⟩ How is dependency injection performed in the bean-file XML?
There are nested elements within each bean definition.
27⟩ How is setter dependency injection specified a configuration file?
<constructor-arg… and <property…
28⟩ What is dependency injection?
A pattern (design) whereby collaborators are passed into an object from the outside - the object does not allocate them for itself.
29⟩ Why is dependency injection useful?
Different collaborators for different environments can be injected - test, production, test-database, real database. This allows classes to be tested independent of its collaborators (makes it easy to pass in stub or mock objects).
30⟩ How to run JMX Java application in uDeploy process?
Copy {WLHOME}/wlserver_**/server/lib/wlfullclient.jar file into {agent home}/opt/groovy-1.8.8/lib Then the Groovy script (that migrated from my JMX Java application) works.
