Examice

Exam 2v0-7222 All QuestionsBrowse all questions from this exam

Go to Exam

Question 61

Refer to the exhibit.

How can a Spring Bean be created from this LegacySingleton class?

Call LegacySingleton.getInstance() from within a @Bean method and return the instance.

Return an instance of LegacySingleton using the new keyword from a @Bean method.

It is not possible without modifying the LegacySingleton class, the constructor must be public.

Modify the LegacySingleton class by adding the @Autowired annotation to the instance variable.

Correct Answer: A

The LegacySingleton class uses the Singleton Design Pattern to ensure that only one instance of the class is created. The way to achieve this in a Spring Bean is by calling the LegacySingleton.getInstance() method from within a @Bean method and returning the instance. This allows Spring to manage the singleton instance as a bean without modifying the original class.

Discussion

saJAvaOption: A

correct