Another year has passed, the workplace snow has not melt, ushered in a big test. The epidemic is still not over, and everyone is trying to cheer up and greet each other, but the corners of their eyes are full of fatigue…
Enterprises adjust salary, downsizing, organizational structure adjustment and so on, there are only many bad news. Recently, there are also a lot of friends who come to inquire about job-changing, because the previous company has a relatively large salary and organizational changes
I sorted out the various big factory spring and Autumn recruitment through sharing, sharing tens of thousands of interview questions and answers, from interns to the development of 1-10 years of resume template, the interview process of the document tutorial!
Ali often asks interview questions (1-5 years of experience)
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What’s the difference between String, StringBuffer, and StringBuilder? Why is String immutable?
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What is the difference between Vector, ArrayList, and LinkedList?
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HashTable, HashMap, TreeMap?
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What is the difference between Tomcat, Apache and JBoss?
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The difference between GET and POST?
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What’s the difference between Session and Cookie?
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The Servlet life cycle?
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What does the HTTP packet contain?
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What is SQL injection? How to prevent SQL injection
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SendRedirect, Foward
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With respect to the JAVA memory model, one object (two properties, four methods) is instantiated 100 times, and now there is storage state in memory, several objects, several properties, and several methods.
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Talk about Hibernate, the role of first and second level caching, and how Hibernate uses caching in projects.
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A little bit about reflection, mainly the concept, where do you need reflection mechanism, reflection performance, how to optimize
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Talk about the difference between Hibernate and Ibatis
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Understanding Of Spring, what will be used in the project? How does it work? Understanding of IOC, AOP and implementation principles
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Thread synchronization, how to control concurrent operations
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Describes the Struts workflow
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If you want to implement a Tomcat Server, how to implement the session mechanism
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About the Cache (Ehcache, Memcached)
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SQL optimization related issues
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Rownum and Rowid in Oracle database
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How to analyze ORACLE’s execution plan?
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What are the benefits and problems of using indexes in DB?
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JVM garbage collection implementation principles. Thread priority for garbage collection.
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JVM maximum memory Settings. Setting principles. Talk about garbage collection.
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Java Engineer: Java.mybatis. Zookeeper. Dubbo, ElasticSearch. Memcached,
Spring Cloud, rabbitmq. Kafka,
Linux interview topics and answers forward + comments, click here to get free screenshots
From intern to developing resume template for 1-10 years, face to face!
From JVM-Java collection – concurrency – Spring – micro services -Netty- algorithms – cloud computing and other 30 knowledge points in detail, interview essential core tutorial!
Micro service
