Preface
It's mid-October now, and the golden nine and silver ten are coming to an end. Obviously, this year's interview season is obviously not as hot as in previous years, and it is even more difficult for job seekers. On the whole, this year is indeed not the best time for an interview, but taking advantage of the time left this year to prepare well, next year's gold three silver four may be much smoother. However, for this year's graduating students, the competition will be even greater if they wait for the interview next year.
However, fortunately, we can always find some good resources to share. The information we shared today is a 987-page Java Interview Collection. After reading it completely, you may think that it is not that difficult for fresh graduates to find a job.
The following content of this article mainly shares the important content recorded in this Java Interview Book, which is mainly divided into two aspects:
①Interview experience skills
- Interviewer motto
- Interview experience exchange
- Business interview written test strategy
②Interview technical breakthrough
- Java basics
- Java Web
- Database principle
- Design Patterns
- Data Structures and Algorithms
- Mass data processing
- SSM enterprise application (Spring+SpringMVC+Mybatis)
- SpringBoot+SpringCloud
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1. Interview experience skills
1. Interviewer's motto
Regardless of the industry, in fact, before the interview, we will think about a question, what kind of job applicant will be favored by the interviewer? As a job seeker, what preparations do you need to do before the interview to deal with all kinds of interviewers? Now that the competition is so fierce, how do you stand out from the crowd? In this part of "Interviewer's Proverbs", several senior executives are mainly invited to speak out, which may bring some inspiration to your interview.
2. Interview experience exchange
"A lesson from the past, a teacher of the future", this is why many programmers will go to some websites to review the experience before the interview. In fact, they also want to learn some actual conditions from these experience in order to prepare in advance. . The content of this part is mainly based on the personal job search experience and experience of graduates from major universities and graduate students. This part of the content supervises and analyzes the current programmer’s interviews, written test-related preparations, time planning, book reading, interview skills, and offer selection. For the current graduates to enter the workplace in the future, Has a very good guiding role.
3. Strategies for corporate interview written exam
With the rapid development of the Internet, there are more and more Internet companies nowadays. For fresh graduates, finding a job is still very inexperienced, so in the face of countless IT companies, I don’t know whether to "spread the Internet" or concentrate on oneself. The experience breaks through one or a few.
In fact, it's not just fresh graduates, but those who have worked for several years also have such doubts. Therefore, in this part, mainstream IT companies are used as the analysis targets, including Internet companies, network equipment providers, foreign companies, state-owned companies, research institutes, and entrepreneurial companies. The interview written examinations of these companies are analyzed one by one. Through this part of the content, we can be regarded as a clear and detailed understanding of the differences between these companies. As for how to choose, we need to refer to the differences and make a more appropriate one. decision.
Second, the interview technique
For fresh students, there is no experience in interviews. This part of the experience is relatively scarce. It is not clear what these companies will ask during interviews. Therefore, this part will focus on the interviews that current IT companies will ask fresh students. All the questions are sorted and sorted out, of course, they are mainly Internet companies.
1. Basic knowledge of Java
- What are the advantages of the Java language?
- What are the similarities and differences between Java and C/C++?
- Why is the method public static void main (String[ ]args) needed?
- How to output "Hello World" before the main() method is executed
- What is the order of initialization of Java programs?
- What are the scopes in Java?
- Can multiple classes be defined in one Java file?
- What is a constructor?
- Why do some interfaces in Java have no methods?
- What is the function of the clone method in Java?
- What is the reflection mechanism?
- What is the role of package?
- How to realize the function similar to the function pointer in C language?
- Object Oriented Technology
- What is the difference between object-oriented and process-oriented?
- What are the characteristics of object-oriented?
- What are the advantages of object-oriented development
- What is inheritance?
- What is the difference between composition and inheritance?
- What is the realization mechanism of polymorphism?
- What is the difference between overloading and overwriting?
- ......
- Multithreading
- What is a thread? How is it different from a process? Why use multithreading?
- What is the difference between synchronous and asynchronous?
- How to implement Java multithreading?
- What is the difference between the run() method and the start() method?
- What are the implementation methods of multi-thread synchronization?
- What is the difference between sleep() method and wait() method?
- What are the ways to terminate threads?
- What are the similarities and differences between synchronized and Lock?
- What is a daemon thread?
- What is the role of join() method?
- Java database operations
- How to access the database through JDBC?
- What method does JDBC use to process transactions?
- What is the role of Class.forName?
- What is the difference between Statement, PrepareStatement and CallableStatement?
- What is the difference between getString() method and getObject() method?
- What issues should be paid attention to when using JDBC?
- What is JDO?
- What is the difference between JDBC and Hibernate?
2.Java Web
- What is the workflow of page request?
- What is the difference between Get and Post methods in Http?
- What is Servlet?
- How to choose between doPost() method and doGet() method?
- What is the life cycle of a servlet?
- What are the characteristics of JSP?
- What are the similarities and differences between JSP and Servlet?
- How to use JSP and Servlet to implement the MVC model?
- What is the difference between forward and redirect in Servlet?
- What are the built-in objects of JSP?
- What are the main methods of the request object?
- What actions does JSP have?
- What is the difference between include directive and include action in JSP?
- What are the session tracking technologies?
- How to make string encoding in Web development?
- What is Ajax
- What is the difference between cookie and session?
- ......
- What is IOC?
- What is AOP?
- What is the Spring framework?
- What is Hibernate?
- What is Hibernate's secondary cache?
- What is the difference between update() and saveOrUpdate(), load() and get() of session in Hibernate?
- What are the primary key generation strategies of Hibernate?
- How to implement the paging mechanism?
- What is SSH?
3. Database principle
- What are the functions of the SQL language?
- What is the difference between inner connection and outer connection?
- What is a transaction?
- What is a stored procedure? What is the difference and connection between it and function?
- What is the difference between the various paradigms?
- What is a trigger?
- What is a cursor?
- What happens if the database log is full?
- What is the difference between union and union all?
- What is a view?
4. Design patterns
- What is the singleton pattern?
- What is the factory model?
- What is the adapter mode?
- What is the observer mode?
5. Data structure and algorithm
- How to add and delete singly linked lists?
- How to delete duplicate data from the linked list?
- How to find the kth element from the bottom in a singly linked list?
- How to realize the reversal of the linked list?
- How to output a singly linked list from end to beginning?
- How to find the middle node of a singly linked list?
- How to detect whether a linked list has a ring?
- How to delete a specified node without knowing the head pointer?
- How to judge whether two linked lists intersect?
- Stack and queue?
- What is the difference between stack and queue?
- How to implement the stack?
- ......
- How to reverse the string?
- How to judge whether two strings consist of the same characters?
- How to delete repeated characters in a string?
- How to unify how many words are in a line of characters?
- How to print the arrangement of the array as required?
- How to output all combinations of strings?
- The basic concept of binary tree
- How to implement a binary sort tree
- How to traverse a binary tree in sequence?
- Knowing the pre-order traversal and middle-order traversal, how to find the post-order traversal?
- How to find the maximum distance of nodes in a binary tree?
- How to eliminate nested parentheses?
- How to find the maximum and minimum of two numbers without using comparison operations.
6. Mass data processing
- problem analysis
- basic method
- Classic case analysis
- top K problem
- Duplicate question
- Sorting problem
7. SSM enterprise application (Spring+SpringMVC+Mybatis)
- The difference between Spring and Struts?
- What is aop and what is the role of aop?
- What are the key terms in aop and what are their relationships?
- There are several ways of dependency injection and what are each?
- What are the core classes in spring and what are their functions?
- The role of ApplicationContext
- How to realize resource management?
- How to join the web framework?
- How to implement event handling?
- What do spring's ioc and di stand for?
- How to achieve internationalization in spring?
- What are the main tags of spring configuration? what's the effect?
- What are the advantages and disadvantages of spring and ejb2.0 transaction management?
- What is the difference between spring jdbc and traditional jdbc? What are the core classes?
- There are several types of transaction management in spring? What are they?
- How to configure code transaction management in Spring?
- How to configure container transaction management in spring, and what are the related classes?
- If spring and hibernate are combined, the hibernate.cfg.xml file is not required. Is it correct?
- What are the main classes in the spring+hibernate configuration file? How to configure?
- In the implementation of Spring+hibernate code, which one of the implementation classes must be inherited from, and what effect does it have?
- How to configure spring+struts?
- How to configure the applicationContext.xml file in the web environment?
- The difference between jsf and Spring?
8.SpringBoot+SpringCloud
- What is Spring Boot?
- What are the advantages of Spring Boot?
- What is JavaConfig?
- How to reload changes on Spring Boot without restarting the server?
- What is the monitor in Spring Boot?
- How to disable Actuator endpoint security in Spring Boot?
- How to run Spring Boot applications on custom ports?
- What is YAML?
- How to realize the security of Spring Boot application?
- How to integrate Spring Boot and ActiveMQ?
- How to use Spring Boot to implement paging and sorting?
- What is Swagger? Have you implemented it with Spring Boot?
- What is Spring Profiles?
- What is Spring Batch?
- What is a FreeMarker template?
- How to use Spring Boot to implement exception handling?
- Which starter maven dependencies did you use?
- What is a CSRF attack?
- What is AOP?
- What is Apache Kafka?
- How do we monitor all Spring Boot microservices?
- ......
- What are the advantages of using Spring Cloud?
- What does service registration and discovery mean? How to achieve Spring Cloud?
- What is the significance of load balancing?
- What is Hystrix? How does it achieve fault tolerance?
- What is a Hystrix circuit breaker? Do we need it?
- What is Netflix Feign? What are its advantages?
to sum up
For programmers, the academic requirements are already quite loose, so for programmers, the starting line is the same, there is no offer that can't be taken, only the ability to be hard enough.
In any case, it is definitely helpful to prepare early for your interview. The above Java Interview Booklet may be able to help you in the next year.
If you need this complete Java Interview Book, just move your fingers and add the assistant VX below to get it 100% free!
