Preface
In this era of rapid network development, I would like to ask why you choose to be a programmer? Some people say that it is not sociable, others say that the hottest industry Internet, the best professional programmers. Indeed, in this prosperous industry, as long as you don’t disembark yourself and have poor skills, you can live without worry, work hard and maybe even get a raise and become a leader in the eyes of others. There are not many industries that have high starting salaries as programmers. There are not many industries that raise wages as fast as programmers. There are not many industries that gather high-intellectual people everywhere like programmers, and they are surrounded by people who are fast-changing their minds at work. The workplace does not talk about politics and only talks about plans, which is indeed an easy way for some people who are not sociable.
Doing things for others, that a stable salary is not difficult for many people to accept. I am afraid that when you reach middle age, you find yourself tied to this industry and tied to the company. Professional skills are not used at all when they are out of the company, and even the vegetable, rice, oil and salt in life have nothing to do with this. A long time ago, the popular saying "The world is so big, I want to see" This is a willful person Many people admire the teacher’s resignation letter when he resigned. It was because of the freedom of choice. As soon as we leave the circle of programmers, you will find that many people who originally chose this industry because of bad words People have become giant babies in life because of time. They are not good at dealing with people. Others blame us for being too low in EQ and being unable to do things? Are these the sorrows of programmers, or the subtle influence of market circles? I once met a person who originally chose this industry because of his bad words. Later, because of the influence of the atmosphere of the circle, he returned home and was even more uncomfortable to communicate with his lover, which finally led to the misfortune of the marriage. It's really regrettable!
Below, I will write down this experience for your reference, I hope it will be helpful to you.
Interview questions
- Self introduction
- .Project experience
- Three object-oriented features
- Introduce String, StringBuffer and StringBuilder
- Why is the hashmap expansion doubled?
- How hashmap resolves conflicts
- What optimizations have been made in hashmap
- The relationship between threads and processes
- How to realize synchronization of threads in Java
- What is the difference between Sychronized and ReentrantLock
- Four major components of Android
- Activity life cycle and startup mode
- The relationship between process and activity stack
- The relationship between Window and Activity
- The difference between ListView and RecyclerView
- Android message processing mechanism (Looper, MessageQueue, Handler)
- Common layout
- The merge tag in the layout
- What do you want to ask
Rhetorical link
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The job business in Chengdu The
interviewer replied: mainly overseas e-commerce business -
Jingdong’s current application of Kotlin and Flutter
Interviewer replied: Both Java and Kotlin are used, and Flutter is also used
(PS: In the previous interview with Baidu Meituan, the interviewer replied that Kotlin seems to be used less, but the big front-ends are all used. It is true that the technology that can save costs is what the company needs...)
- The next step in learning and development
Information sharing
- The latest interview topics
This question bank has a lot of content, except for some popular and popular technical interview questions, such as Kotlin, database, Java virtual machine interview questions, array, Framework, hybrid cross-platform development, etc.
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