Java interview questions and answers (the latest version of 2023 Golden September Silver October, continuous update)

foreword

During the summer vacation, Golden September and Silver October are also approaching. Many friends are facing changing jobs and looking for jobs. I believe that all of you have a certain understanding of Java-related job interviews. A series of questions about a knowledge point until you are overwhelmed. This should be the consensus of many people. No matter who it is, we often encounter a confused stage on the way of learning. If you grasp the most fundamental things, you will never feel lost.

The wave of layoffs in gold, silver and gold made the job interview even worse. There are already many big companies, such as Tencent and ByteDance, whose recruitment quotas have been significantly reduced, but the interview threshold has been raised again and again. If you don’t prepare carefully for the Golden, Nine and Silver Ten, you may be speechless by the interviewer, and even lose a rare opportunity. .

There are many articles on Java basic interview questions on the Internet, but most of them are relatively old. Many topics are no longer the current hot topics, and there is no need to spend too much time on these topics. Many answers are now inaccurate and may mislead newcomers. Therefore, I spent a few days sorting out some of the current high-frequency Java basic topics, and after repeated consideration, I gave an analysis that conforms to the current version.

overview

Java Fundamentals Interview Questions

Java Collections Interview Questions

Abnormal & Reflective Interview Questions

IO&NIO interview questions

Multi-threaded interview questions

JVM interview questions

Linux interview questions

Mysql interview questions

Spring interview questions

Mybatis interview questions

Nginx interview questions

Redis interview questions

SpringBoot interview questions

Spring Cloud interview questions

CV

Summarize

One thing we need to understand is that the career of a programmer is actually in this industry, not a fixed company. Now it is almost impossible to have a job for a lifetime, so the variables are relatively large. What we have to do is Be ready to deal with "variables" at any time. Therefore, it is very important to constantly update your knowledge base to ensure that you can remain at the top of the industry and have a sense of urgency.

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Origin blog.csdn.net/qq13321123/article/details/132146378