origin
With the continuous development of Internet companies, there are more and more modules in product projects, and user experience requirements are getting higher and higher. It is becoming more and more difficult to achieve the purpose of small steps and fast iterations, and the mutual interaction between applications The application of plug-in technology was born for issues such as calls. If there is no plug-in technology, the applications that integrate a large number of "app" such as Meituan and Taobao may be as big as a few g.
Therefore, today's Android mobile development will not be hot-fixed, plug-in, and componentized, and more than 80% of the interviews will not pass.
Ali P8 bosses stayed up until one or two in the morning and spent nearly half a month on Android hot repair framework, plug-in framework, component framework, image loading framework, network access framework, RxJava responsive programming framework, IOC dependency injection Framework, recent architecture component Jetpack and other Android third-party open source frameworks have been integrated into a set of system knowledge notes PDF, up to 1042 pages! I believe that after reading this document, you will have a deeper and more systematic understanding of these Android third-party frameworks.
So what technical skills are needed for interviews in big factories? This is too much, and the technical requirements of different companies are different, but the same point is that the requirements of large companies for technology are not superficial, and they will inevitably require a certain depth on the basis of a certain breadth.
I combined the major recruitment websites and integrated a series of job requirements and some interview questions for your reference. These interview questions can be searched for answers on the powerful Internet. Some answers may not be complete, so I made one myself Summary, friends who want to see the answer can leave a message in the comment area or privately message me, I will reply one by one when I see it
Java basics
1. The difference between process and thread;
2. Java's concurrency, multithreading, threading model;
3. What is a thread pool and how to use it?
4. How to ensure data consistency; Synchronized keywords, class locks, method locks, re-entry locks;
5. What is the mechanism for achieving polymorphism in Java;
6. How to serialize a Java object into a file;
7. JVM and GC mechanism;
8. Synchronous method; multi-process development and multi-process application scenarios;
9. The difference between wait and seelp methods in Java;
10. The role of synchronized and volatile keywords;
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In a blink of an eye time really flies. We ran our own things and embarked on our own journey, but even if we haven't seen each other for many years, we are still as "close" as before because of this friendship. Do not forget the original intention and always have to go. Come on, programmers, in my opinion 35 years old, 40 years old is never a crisis, as long as you never forget why you embarked on the journey!
Finally, if you need the same information, you can **Private message I click [ Learn ]** I am willing to share with you!
In order to let more friends who are studying or preparing for an interview see this article, I hope you can comment more, like + forward!
Thanks again to all the friends who have provided me with questions, and thank you for being there!