Judging from the current general environment, it is much more difficult to succeed in job-hopping than in previous years. An obvious feeling: This year's interview, no matter one side or two sides, will test the technical skills of Java programmers . This does not immediately lead to the golden stage of job interview and job hopping. If you succeed in promotion and salary increase, you will be hit hard if you fail. Of course, you should also pay attention to job-hopping all the time, but I suggest that you think about why you want to change jobs before you change jobs. Don't follow the trend. Seeing colleagues leave one by one, I blindly start interviewing (didn't prepare well during the period). Is it because of technical reasons (affecting my own development, deviating from my planned trajectory), or because I don't pay enough attention to it. Only after thinking about jumping out will you not regret it.
I spent a year collecting and sorting out the interviews, and finally finished a 40,000-word PDF document of the core knowledge points of Java interviews, as well as detailed analysis of many interview topics. Contains knowledge points that must be asked in the interview: Java collection, JVM, multithreading, microservices, source code framework, distributed, design patterns, message middleware, data structures, algorithms, etc. It was originally expected to take six months to organize piecemeal time, but I did not expect it to take nearly a year to complete. Due to the limitation of the length of the article, what will be shared below will be displayed in the form of interview questions or pictures. I hope that it will be helpful for colleagues to understand their own knowledge system in the next interview.
- Java programmers who want to change jobs in the near future and want to interview, check and fill in the gaps, so as to make up for the shortcomings as soon as possible;
- Want to understand the latest technical requirements of "first-line Internet companies", compare and find out their own strengths and weaknesses, and evaluate their competitiveness in the existing market;
- A programmer who has been developing Java for several years, but has not yet formed a systematic Java knowledge system, and lacks a clear direction for improvement and a learning path.
I believe it will bring you a lot of gains.
Summary of common interview questions (Java post) of major Internet companies
The document covers Java basics, design patterns, JVM, multithreading, Mysql, Spring, Spring Boot, Spring Cloud, Dubbo, Mybatis, Redis, network, Linux, MQ, Zookeeper, Netty and even big data algorithm projects. There are 1658 pages, which can be said to be relatively complete. Due to the space limit, only the table of contents and part of the content will be shown for everyone.
Directory overview
There are only 200 pages in the basic part of Java, so I won’t show you too much, just look at the content below (screenshots can only be screenshots of part of the catalog due to space limitations)
- JVM
- Multithreading
- MySQL
- Spring
- Spring Cloud
- Dubbo
- Redis
- network
- MQ
- Zookeeper
- Netty
- algorithm
- Project
content excerpt
JVM interview
Multi-threaded interview
MQ interview
algorithm interview
at last
The attitude of working for 8 hours determines the lower limit, and the 8 hours of free time determine the upper limit. People live in this world, they need to eat, and they need to pursue material things. In terms of utilitarianism, there is only one thing we have to do, which is to surpass others. So 8 hours free is your best chance to surpass others. Don't say that working all day is very tiring. Everyone is tired. Don't you be more tired? Why are you better than others?