preface
It’s late May, and it’s clear that this year’s interview season is a stressful one, and a little tougher for job seekers. However, for this year’s graduates, waiting until next year to interview is even more competitive.
The good news is that there are always some good resources to share. This is a 987 page Java interview guide that you can read to make sure your job search isn’t that difficult after all.
The following sections of this article will share the most important lessons from this Java interview guide, which is divided into two main areas:
① Interview experience and skills
- Quotes from the Interviewer
- Interview experience exchange
- Enterprise interview written test guide
② Interview technology
- Java Basics
- Java Web
- Database Principles
- Design patterns
- Data structures and algorithms
- Massive data processing
- SSM Enterprise application (Spring+SpringMVC+Mybatis)
- SpringBoot+SpringCloud
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First, interview experience and skills
1. The interviewer’s mantra
No matter what the industry, the truth is that before an interview, we all have to think about the question: what kind of candidate will attract the interviewer? What does a job seeker need to do to prepare for a variety of interviewers? With so much competition these days, how do you stand out from the crowd? In this section of “Interviewer’s Words of Wisdom,” we invite a few senior executives to share their opinions, which may give you some insight into your interview.
2. Interview experience exchange
That’s why so many programmers go to websites to get some information before an interview, in order to prepare for the interview. And this part of the content, is mainly selected to sort out the major universities, graduate graduates of the personal job hunting experience and experience as a blueprint. This part of the content, the programmer interview, written test related preparation, time planning, reading books, interview skills and offer selection and other aspects of the analysis of the supervision, for the current graduates into the workplace in the future, has a very good guidance.
3. Enterprise interview and written test guide
With the rapid development of the Internet, there are more and more Internet enterprises now, for this year’s students, looking for a job or very lack of experience, so in the face of countless IT enterprises, do not know the “wide net” or focus on their own experience to break through a certain or a few.
In fact, not only fresh graduates, this for a few years of work, also have such doubts. Therefore, this part takes mainstream IT enterprises as the object of analysis, including Internet enterprises, network equipment providers, foreign enterprises, state-owned enterprises, research institutes and entrepreneurial enterprises. The interview and written examination of these enterprises have been analyzed one by one. Through this part of the content, we can be clear and detailed understanding of the differences of these enterprises. As for how to choose, we need to refer to the differences among them and make a more appropriate decision by ourselves.
Two, interview technology conquer
For graduating students, the interview is not what experience, this part of the experience is relatively scarce, do not know what these companies will be asked about the interview, so this part will now IT companies for graduating students will be asked all classified and sorted out, of course, mainly with Internet companies.
1.Java basics
- What are the advantages of the Java language?
- What are the similarities and differences between Java and C/C++?
- Public static void main (String[]args)
- How to print “Hello World” before main ()
- What is the order in which Java programs are initialized?
- What are the scopes in Java?
- Can more than one class be defined in a Java file?
- What is a constructor?
- Why do some Java interfaces have no methods at all?
- What does the Clone method in Java do?
- What is the reflex mechanism?
- What does package do?
- How to realize the function similar to C language function pointer?
- Object Oriented technology
- What is the difference between object orientation and process orientation?
- What are the characteristics of object orientation?
- What are the advantages of object-oriented development
- What is inheritance?
- What’s the difference between composition and inheritance?
- What is the implementation mechanism of polymorphism?
- What’s the difference between overloading and overwriting?
- .
- multithreading
- What is a thread? How is it different from a process? Why multithreading?
- What’s 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 multithreaded synchronization?
- What is the difference between the sleep () method and wait () method?
- What are the ways to terminate a thread?
- What are the similarities and differences between synchronized and Lock?
- What is a daemon thread?
- What does the join () method do?
- Java database operations
- How do I access the database through JDBC?
- What approach does JDBC use to handle transactions?
- What does class.forname do?
- What is the difference between a Statement, PrepareStatement, and CallableStatement?
- What’s the difference between the getString () method and getObject () method?
- What should I pay attention to when using JDBC?
- What is JDO?
- What is the difference between JDBC and Hibernate?
2.Java Web
- What is the page request workflow?
- What is the difference between Get and Post methods in Http?
- What is a Servlet?
- How to choose between doPost () method and doGet () method?
- What is the life cycle of a Servlet?
- What are the features of JSP?
- What are the similarities and differences between JSP and Servlet?
- How to use JSP and Servlet to implement MVC model?
- What is the difference between forward and redirect in servlets?
- What are the built-in objects for JSP?
- What are the main methods of a Request object?
- What actions does a JSP have?
- What is the difference between include directives and include actions in JSP?
- What are the session tracking technologies?
- How to encode string in Web development?
- What is the Ajax
- What’s the difference between cookies and sessions?
- .
- What is IOC?
- What is AOP?
- What is the Spring Framework?
- What is Hibernate?
- What is Hibernate’s second-level cache?
- What is the difference between Session update () and saveOrUpdate (), load () and get ()?
- What are Hibernate’s primary key generation strategies?
- How do YOU implement paging?
- What is SSH?
3. Database principle
- What are the functions of SQL?
- What is the difference between an inner join and an outer join?
- What is a transaction?
- What is a stored procedure? What are the differences and relations between them and functions?
- What are the differences between paradigms?
- What is a trigger?
- What is a cursor?
- What happens if the database logs are full?
- What’s the difference between a union and a union all?
- What is a view?
4. Design patterns
- What is the singleton pattern?
- What is the factory model?
- What is the adapter pattern?
- What is the observer model?
5. Data structure and algorithm
- How to add and delete a single linked list?
- How do I remove duplicate data from a linked list?
- How do I find the KTH to last element in a single list?
- How to reverse linked lists?
- How to output a single linked list from end to end?
- How do I find the middle node of a single linked list?
- How do I detect if a linked list has rings?
- How to delete a node without knowing the header pointer?
- How do I determine if two linked lists intersect?
- Stacks and queues?
- What are the differences between stacks and queues?
- How to implement the stack?
- .
- How to reverse a string?
- How do I determine if two strings are composed of the same characters?
- How to delete duplicate characters in a string?
- How to unify the number of words in a line of characters?
- How do I print the array alignment as required?
- How do I output all combinations of strings?
- Basic concepts of binary trees
- How to implement binary sort tree
- How to sequence traverse a binary tree?
- Given preordered traversal and middle-ordered traversal, how do we solve post-ordered traversal?
- How to find the maximum distance of nodes in a binary tree?
- How do I eliminate nested parentheses?
- How to find the maximum and minimum of two numbers without using a comparison operation.
6. Mass data processing
- Problem analysis
- Basic method
- Classic Case Analysis
- Top K problem
- Repeat the question
- Scheduling problems
7.SSM enterprise application (Spring+SpringMVC+Mybatis)
- What’s the difference between Spring and Struts?
- What is AOP and what does AOP do?
- What are some of the key terms in AOP, and what are their relationships?
- There are several ways of dependency injection. What are they?
- What are the core classes in Spring and what do they do?
- The role of the ApplicationContext
- How to implement resource management?
- How to add to the Web framework?
- How is event handling implemented?
- What do ioc and DI stand for in Spring?
- How do I implement internationalization in Spring?
- What are the main tags for Spring configuration? What does it do?
- What are the advantages and disadvantages of spring versus ejb2.0 transaction management?
- How does Spring’s JDBC differ from traditional JDBC? What are its core classes?
- How much transaction management is there in Spring? What are they?
- How do you configure transaction management for code in Spring?
- How do you configure transaction management for a container in Spring, and what are the relevant classes?
- If spring is combined with Hibernate, you don’t need hibernate.cfg. XML.
- What are the main classes in the Spring + Hibernate configuration file? How to configure it?
- What role does Spring+ Hibernate’s code implementation have in implementing which class it must inherit from?
- How to configure Spring + Struts?
- How do I configure the ApplicationContext.xml file in a Web environment?
- What’s the difference between JSF and Spring?
8.SpringBoot+SpringCloud
- What is Spring Boot?
- What are the advantages of Spring Boot?
- What is JavaConfig?
- How do I reload changes on Spring Boot without restarting the server?
- What is a monitor in Spring Boot?
- How to disable THE SECURITY of the Actuator in Spring Boot?
- How do I run a Spring Boot application on a custom port?
- What is YAML?
- How can Spring Boot applications be secured?
- How to integrate Spring Boot and ActiveMQ?
- How do I use Spring Boot for paging and sorting?
- What is Swagger? Did you implement it with Spring Boot?
- What are Spring Profiles?
- What is Spring Batch?
- What is a FreeMarker template?
- How do I implement exception handling using Spring Boot?
- Which Starter Maven dependencies do 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 do I mean by service registration and discovery? How is Spring Cloud implemented?
- What does load balancing mean?
- What is Hystrix? How does it achieve fault tolerance?
- What is Hystrix circuit breaker? Do we need it?
- What is Netflix Feign? What are its advantages?
conclusion
For programmers, the degree requirements have been quite relaxed, so for programmers, the starting line is the same, there is no offer that cannot be taken, only the ability is not hard enough.
Either way, it certainly helps to prepare for your interview.
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