Jingdong's backstage experience

April 13th 16:00 40 minutes

Self introduction

What do you believe in the programming language class? (Economics, Management)

Have you studied IT project management? Let’s talk about it (?? Top ten knowledge areas??)

Encapsulation inheritance polymorphism is introduced in detail, giving an example of polymorphism.

Does an abstract method have to be an abstract class? Does an abstract class have to have abstract methods?

The difference between list and set.

Is there an ordered set? (Yes, LinkedHashSet)

The difference between HashMap and HashTable.

Why is HashTable thread safe? (synchronized is locked) (then don't ask me synchronized)

Is there a Map that is both thread-safe and efficient? (ConcurrentHashMap)

Have you seen BlockQueue? (queuing strategy of thread pool)

Trial conditions and specific contents of the queuing strategy and rejection strategy of the thread pool.

Introduce IOC and AOP in spring.

What are the words of IOC?

How does spring generate a Bean? How to generate after the configuration file is written?

AOP application scenarios, specific introduction, what needs to be written in the configuration file? What specific annotations need to be written?

Say a few annotations of springMVC, what are they doing?

What does @PathVariable do?

Talk about filter, servlet, listener.

Does Redis know? What about cache? What is the cache for? What does it do?

What book have you read. (jvm & large website technical architecture, I read more blogs, and I feel that blogs are more targeted)

Introduce the project.

Do the problems in the project. Technical problems, how to communicate & solve? (After using ajax, I can't find or understand the front-end label)

The little brother is very nice, and he told me not to be so formal, so let's just chat. However, the landlord has been focusing on thread safety & high concurrency recently, ignoring the framework. Here, I wish my little brother more handsome, good love, and a smooth career. I also hope that my little brother can raise your hand. : )

 

Author: Jiangshan Sheji

This article comes from Niuke.com

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Niuke.com (www.nowcoder.com)

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