The latest compilation of Internet Java interview questions in 2023 with answers (1500 questions)

Hello everyone, many friends have left messages in the background recently. The recent interviews have become more and more difficult. There are more and more stereotyped essays to be memorized. Build an aircraft carrier with bare hands! It's really embarrassing for us programmers.

As an excellent programmer, technical interviews are an inevitable part. Generally, technical interviewers will use their own methods to examine the technical skills and basic theoretical knowledge of programmers.

If you have participated in some big factory interviews , you will definitely encounter some questions like this:

1. Look at the frameworks used in your projects. Are you familiar with the implementation principles of frameworks such as Spring and mybatis?

2. Have you come into contact with message middleware, load balancing, RPC framework and other technologies above, have you ever done MySQL sub-database and sub-table?

3. Distributed architecture design, what about Redis distributed locks?

Does it look difficult, is it different from the questions in the "question bank" prepared by yourself? Not sure where to start? If you feel this way, it means that your skills still need to continue to practice.

In many cases, the questions asked by the interviewer will be different from the questions in the "question bank" prepared by myself. Even after a review, I still don't know where to start the next interview.

For this reason, I specially compiled a copy of "Java Advanced Learning + Interview Collection" to share with you. The content covers: computer foundation, Java, JVM, spring, algorithm, micro-service, distributed, big factory experience, technical brain map, etc. Wait...a total of 1600+ pages are of very high quality! ! !

Regardless of whether you want to go to an interview recently, it is recommended that everyone keep a copy! ! After finishing the study, whether it is promotion in the factory or job-hopping and salary increase is no problem!

The content is as follows:

offline version

Java Fundamentals Interview Questions

Java Collections/Generics Interview Questions

Java exception interview questions

  • What are the two types of exceptions in Java?
  • What are the exception handling mechanisms?
  • How to customize an exception
  • try catch finally, there is return in try, is finally still executed?
  • Excption and Error package structure
  • The difference between Thow and thorws
  • What is the difference between Error and Exception?
  • What is the difference between error and exception

IO vs NIO in Java Interview Questions

  • IO stream in Java?
  • Difference between Java IO and NIO
  • What are the commonly used IO classes
  • The difference between byte stream and character stream
  • Blocking IO model
  • Non-blocking IO model
  • Multiplexed IO Model
  • Signal Driven IO Model
  • Asynchronous IO model
  • JAVA NIO
  • NIO's buffer
  • NIO's non-blocking
  • Channel
  • Buffer
  • Selector

Java reflection and serialization interview questions

Multithreading/Java concurrency issues

JVM issues

MySQL problem

Redis problem

Memcached problem

MongoDB problem

spring problem

Spring Boot problem

Spring Cloud interview questions

Summarize

If you are still asking me today "Why do programmers need deep learning?", then it just means that your interest in development is not high, your enthusiasm for programming is not enough, and you do not have a clear vision for your career development. planning.
As a developer, not to mention asking yourself to be the top in the industry, but also to ensure that you are not eliminated by the market. Learning is the most basic thing for programmers.
Finally, I emphasize once again: From now on, we must go deep into the core and refuse to be surrounded!

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Origin blog.csdn.net/csdn1234561231/article/details/131301734