Null Pointer exception while initializing Object using "new" keyword in springboot based microservcies

Question

What happens when I build an object using new keyword in service using springboot framework?

Does the Object created using "new" keyword is built out of the container?

Possible duplicate of [What is a NullPointerException, and how do I fix it?](https://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-i-fix-it) — Jens, May 14 '18 at 07:53

score 1 · Answer 1 · answered May 15 '18 at 05:41

No, the object created out of a "new" keyword doesn't come out of the container. There are two disadvantages to this approach. The first being that it renders the Spring framework a bit useless. Secondly, if there are @Autowired or Spring managed beans inside your "new" bean, they won't get injected. Once you do a "new", spring leaves all the subsequent hierarchical dependency injection to you.

score 0 · Answer 2 · answered May 14 '18 at 07:58

0

in Spring, objects that are created using new keyword, created outside of the container. So you wouldn't get benefits like life cycle management, Security etc

answered May 14 '18 at 07:58

PrasadW

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7

score 0 · Answer 3 · answered May 14 '18 at 07:59

You should always use Spring dependency injection to create Beans (using the @Autowired annotation is the recommended way to do this) otherwise you're losing the benefits of using the Spring framework. I would suggest reading this documentation on Beans and Dependency Injection if you haven't already

Null Pointer exception while initializing Object using "new" keyword in springboot based microservcies

3 Answers3