In order to save time and improve learning efficiency, some outdated knowledge points and topics with very low probability of being written are no longer included and analyzed.
How to answer the question: Start with a positive statement about some of the basic core knowledge, then describe something special, and finally add something to the cake. Pay attention to some things that are not icing on the cake, but gilding the lily, do not write casually. Write the answers like you write a book. I want to answer a question about a new technology. The general idea and steps are: what do we want to do, how to do, what problems encountered in the process of doing, and how to solve them now. In fact, this is also the idea of our lecture.
For example, when we talk about Ajax, we don’t want to change the entire page, but only parts of the page, such as username validation, cascading drop-down lists, and drop-down tree menus. In the traditional way, the browser sends the request directly to the server, and when the server returns a new page, it overwrites the old one, so it doesn’t flow smoothly.
Are you confident about the questions in this interview book? I had confidence, but after listening to you, I lost it! I quite understand. Because he thought I was too deep, he wanted to remember something about me, but he couldn’t, so he lost confidence. I ask again: understand? He said he understood. All you have to do now is to express your understanding as clearly and coherently as possible.
The main purpose of this set of interview questions is to help those who do not have practical work experience in Java software development, but are trying to find a Java software development job in the written test of friends to better win the written test and interview. Due to the scope of this interview question is very extensive, is very wide, very miscellaneous, everyone could not have a day two days after watching and learned the bible of the interview, even if you already learned about the technology, so also need at least a month’s time to digest and to master the bible of the interview, so you need to be prepared early, get this interview from the bible, as of the date of It is necessary to insist on learning a few of the topics in spare time every day, accumulate over a long period of time, and when you go out for an interview, everything will come naturally, and you will be able to do it naturally.
When answering the questions, first answer what it is, then answer what it does and what to pay attention to (this part is the most important, show your experience).
It is very important to have separate paragraphs, clear layers and clear order in the answer. These superficial things can also reveal a person’s habits, style and organization.
Write down the thought process that you went through to get the answer, or the idea that you remembered the answer. Think of it as a debating contest. The answer is to reason with others and present facts. The answer is not limited to what format and form, is to show their knowledge!
Don’t be afraid to answer because someone else’s question is ambiguous. You should be bold to point out that the other subject is very vague and your point of view, do not think of the interviewer how high, in fact, he and you are about the same, you think, if he recruited you, you will be colleagues, is not about the same?
About employment salary, if you are this year’s students, it can not be high wages, like the story of the pie, no diploma also want to take high wages, go to Zhongguancun what fill what lack! A few people foundation is really very good, during the school did some projects, that is still can be relatively high wages.
Companies are hiring programmers for coding skills rather than so-called project experience that is less relevant to the business:
1. What kind of person is the company looking for
2. What will the company ask in an interview?
3. How to write a resume
4 how to meet the standards on the resume (the purpose of the training center’s teaching program)
For some companies that receive some projects and want to hire some junior programmers to help write code and complete the project, what do you value more is his professional skills, or has done several projects before? Let’s rule out those who have strong coding skills and happen to have done similar projects. Actually, it’s not very common to have your cake and eat it. In fact, the company is very clear, as long as the recruitment of people really understand the skills, then he can do any project, the company recruitment is not to ask you to repeat your previous project, but to do a new project, business, as long as you join the project team, you will naturally master. So, most employers in hiring those code level programmers didn’t expect to recruit a similar project, also won’t deliberately to find a similar project, unit of choose and employ persons is not want to have you move in, then you’ve done before, “do it again, so, unit of choose and employ persons is more important in the people of coding technology required for the background, how If the technology is not solid, the project will be fine as long as it follows the development team. Unless some very specialized industry, for a special senior developers and system analyst, recruiters with a special focus on his project experience and industry experience, to find industry expert, didn’t care about the project and with your company, about the details of the project, such people are usually not in through conventional recruitment channels to recruit, but poached by various means, That’s not what I’m going to talk about today.
Technology learn to understand do not understand, someone else a few questions to ask your depth, as long as you ask some specific technical points, it is easy to see that you really understand or false understand, very let see your technical depth and strength, so, technology is not the slightest false, must be solid.
Due to the wide variety of projects, involving all walks of life, what are multifarious businesses, such as hotel room reservation management, company vehicle scheduling management, school curriculum classroom management, supermarket inventory management, knowledge content management, and so on… Tens of thousands and so on, but no matter what the project is, it’s going to be using nothing more than the current popular and common technologies that we’ve learned. With good technology and rich experience, the project is more efficient, the program is more stable and easier to maintain; The technology is poor, but the project can be done after a few bumps and bumps, but the cycle is longer, the number of rework is more, the program code is worse, the use of clumsy technology.
If a person has not completely done a project, he or she is not very interested in the business of the project, and he or she does not know the details of the project. (If I hire you to do library management, and your project experience says you did automobile scheduling, can I ask you about automobile scheduling? Won’t, so, you can easily get the past) and a programmer’s entire career can make real and complete project few, let alone in a number of different industries projects, some programmers is just the rest of my life in a certain industry projects, as a result, he became the industry experts (do one thing at special guy).
Technology, therefore, the interviewer often had just experienced those projects you resume writing, it is impossible for him to ask you to write the details of the project, but only broadly to ask you is how many people do this project, made a long time, the process of development, what are you doing in the process of the project experience and harvest, in what technology, etc on the surface of the problem, so, Projects on a resume can be so loaded that it’s easy to fake them, and technical interviewers can’t tell you whether or not you’re on a project.
What should your RESUME say: What technical expertise and project experience do you have
Teaching projects is to consolidate and flexibly integrate the use of technology, enhance the interest of learning, familiar with the process of doing projects, or get some professional courses can not be obtained in the unique project experience, enhance their interview confidence. The project mentioned should be true and reliable only when it is valuable. Otherwise, it is a project on the surface, but in fact, it is still the integration of knowledge points, which can consolidate the technical points and enhance the interest of learning, but it cannot obtain the actual project experience. (project is mainly to increase the credibility of your experience, have more interviews, really can’t find a job, find a good job, basically see you kung fu on the keyboard), a couple of good interviewer can surface to find out whether you really have the working experience, they ask technology the people and things outside of the company, and ask start, process, result, see you how to make up.
Finally, I carefully recalled the technical interview questions, attached at the end, hoping to be helpful to other friends who want to go to Ali
I came across an interview question
Java basis:
A hashmap structure; What objects can be used as keys
Hashtable, concurrentHashMap, hashtable
String,StringBuilder,StringBuffer
Object depth copy
Multithreading:
Wait and sleep are different methods
Is the await method of countLatch secure
Thread pool parameters, overall process description
Underlying principles behind AQS, CAS
ThreadLocal principles, considerations, parameter passing
There are also Java locks, built-in locks, display locks, various containers
And lock optimization: lock elimination, lock coarsening, lock bias, lightweight lock
Web:
Are servlets thread-safe and how can they be modified
The difference between session and cookie, get and POST, tcp3 handshake, file upload using POST or GET
The session storage
How do I prevent forms from being submitted repeatedly
jvm:
JVM memory model,
JVM issues tools, JPS, Jinfo, Jmap…
Database:
The most important simple and underlying implementation
A scenario that simply fails
The principle of left
Viewing the Execution Plan
And carndiation
Then there is the type of lock, row-table level
Pessimism lock
Explain database things and features
Isolation level
Redo log. Undo log
Bin log Primary/secondary replication
mvcc,Next-Key Lock
Distributed:
I asked CAP and Base
What features does ZooKeeper meet in CAP, PAxOS
How is cache penetration resolved
IO model of Redis
If redis is highly available
Is Redis single-threaded or multi-threaded
How do I rectify the fault when the online CPU usage is too high
Consistency of the hash
Depots table
spring:
The ioc, aop principle
Ioc initialization process
For springmvc process
Springboot, Spring Cloud related components
Project…
A friendly reminder, for the projects that have been done, it is best to sort out and clean up, and you may be asked to draw all kinds of pictures.
I will record the construction process and essence of spring Cloud micro-service cloud architecture recently developed, so as to help more friends who are interested in developing Spring Cloud framework to discuss the construction process of Spring Cloud architecture and how to apply it to enterprise projects.
I personally invite all BATJ architecture masters to create a Java architect community group (group number: 673043639), committed to providing a free platform for Java architecture industry communication, through this platform to let everyone learn and grow from each other, improve their skills, make their level to a higher level, and successfully lead to the development of Java architecture technology masters or architects
The reason why someone is always better than you is because they are already better and are constantly trying to become better, while you are still satisfied with the status quo and secretly happy! Rational use of their every minute every second of time to learn to improve themselves, do not use “no time” to cover up their ideological laziness! While young, hard to fight, to the future of their own account!
Still that sentence, hope this article can help you at the same time, also listen to your point of view. Welcome to comment, add attention, share your ideas! Keep updating!
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