After staying at home for more than a month, are you worrying about the golden season of changing jobs? The document introduced by the editor today contains 15 core Java interview questions for senior engineers from major Internet companies! content include:
· Java collection 228 questions and answer analysis
· JVM and tuning 55 questions and answer analysis
· Java concurrent programming 123 questions and answer analysis
· Spring 121 questions and answers analysis
· Analysis of 55 design patterns
· Spring Boot 22 questions and answer analysis
· Spring Cloud 8 questions and answer analysis
· Distributed high-concurrency architecture analysis (message queue, sub-database and sub-table, transaction, high availability, micro-service architecture)
· Comprehensive analysis of MySQL high frequency 50 questions
· Redis high-frequency 40 questions and answer analysis
· ZooKeeper high-frequency 28 questions and answer analysis
· Waiting for 1,000 interview questions from major companies on the Internet
Do a good job of digesting everything, and from then on, you will not be flustered when you change jobs in the interview.
Hereby note: there is a need for this "Interview Job-hopping Cheats: Analysis of 1000 Questions in Java Super Core Interview for Senior Engineers from Internet Companies" (and more learning materials), which can be shared for free with everyone to learn together
If you need to get it, you can get it for free after one-click and three-connection. Look at the assistant's WeChat: (bjmashibing001) add it and get it for free.
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Java interview questions
1. What are the characteristics of object-oriented?
2. What is the difference when access modifiers are public, private, protected, and not written (default)?
3. Is String the most basic data type?
4. Is float f=3.4; correct?
5. Short s1 = 1; s1 = s1 + 1; is there any error? short s1 = 1; s1 += 1; is there any error?
6. Does Java have goto?
7. What is the difference between int and Integer?
8. The difference between & and &&?
9. Explain the usage of stack, heap and method area in memory.
10. How much is Math.round(11.5) equal to? What is Math.round(-11.5)?
11. Whether switch can be used on byte, whether it can be used on long, and whether it can
Does it work on String?
12. Use the most efficient method to calculate 2 times 8?
13. Does the array have a length() method? Does String have a length() method?
14. How to break out of the current multiple nested loops in Java?
15. Can the constructor be overridden?
16. Two objects have the same value (x.equals(y) == true), but they can have different hashes
code, is this sentence correct?
17. Is it possible to inherit the String class?
18. Wait for more interview questions, see detailed documents
Analysis of Java Interview Questions
JVM and tuning
JVM core 20 questions
1. The memory structure of the JVM.
2. The working process of the JVM method stack, what is the difference between the method stack and the local method stack.
3. How are references in the JVM stack associated with objects in the heap.
4. You can learn about escape analysis techniques.
5. Common Algorithms of GC
6. The process and advantages of the parental delegation model.
7. Commonly used JVM tuning parameters.
8. When did the subject enter the old age?
9. What is memory overflow, memory leak? What is the difference between them?
10. What are the behaviors that cause the class loading operation?
11. Introduce the common tools provided by JVM
12. What is the difference between Full GC, Major GC and Minor GC?
13. ......For more core interview questions, see detailed documentation
Analysis of JVM core interview questions
Java concurrent programming issues
Java concurrent answer analysis
Spring 121 questions
.. See documentation for more omissions
Spring100 question analysis
See the end of the article for more detailed answers
SpringBoot, Cloud25 questions
1. What is Spring Boot?
2. What are the advantages of Spring Boot?
3. What is JavaConfig?
4. How to reload the changes on Spring Boot without restarting the server?
5. What is the monitor in Spring Boot?
6. How to disable Actuator endpoint security in Spring Boot?
7. How to run Spring Boot applications on custom ports?
8. What is YAML?
9. How to realize the security of Spring Boot application?
10. How to integrate Spring Boot and ActiveMQ?
11. How to use Spring Boot to implement paging and sorting?
12. What is Swagger? Have you implemented it with Spring Boot?
13. What is Spring Profiles?
14. What is Spring Batch?
15. What is a FreeMarker template?
16. How to use Spring Boot to implement exception handling?
17. What starter maven dependencies did you use?
18. What is a CSRF attack?
19. What is WebSockets?
20. What is AOP?
21. What is Apache Kafka?
22. How do we monitor all Spring Boot microservices?
23. What is Spring Cloud?
24. What are the advantages of using Spring Cloud?
25. What does service registration and discovery mean? How to implement Spring Cloud?
26. What is the significance of load balancing?
27. What is Hystrix? How does it achieve fault tolerance?
28. What is a Hystrix circuit breaker? Do we need it?
29. What is Netflix Feign? What are its advantages?
30. What is Spring Cloud Bus? Do we need it?
SpringBoot, Cloud problem analysis
Analysis of MySQL database high frequency 50 questions
Redis cache
1. What is Redis?
2. What is the data type of Redis?
3. What are the benefits of using Redis?
4. What are the advantages of Redis over Memcached?
5. See the end of the article for more interview questions
Finally, I would like to emphasize it again. If you want to stay calm during the interview season for gold, three and silver, then "retreat" now, eat thoroughly and eat the book "The Java Core Interview for Senior Engineers of Internet Manufacturers 1000 Questions Analysis"》, free to share with you if necessary
If you need to get it, you can get it for free after one-click and three-connection. Look at the assistant's WeChat: (bjmashibing001) add it and get it for free.
