java spring interview questions

environment. The Web container is more of a deal with HTTP-based requests. And the EJB container is not. It is more about dealing with databases and other services. But they are all interacting with the outside world to reduce the burden on the application. For example, the servlet does not care about the details of HTTP, directly referencing the environment variable session,request,response, EJB does not care about the database connection speed, various transaction control, directly by the con

by Long LuoPersonal blog LinksRecently in the study Java多线程 , encountered a following pen question, the topic is as follows:编写一个程序，程序会启动4个线程，向4个文件A，B，C，D里写入数据，每个线程只能写一个值。 线程A：只写A 线程B：只写B 线程C：只写C 线程D：只写D 4个文件A，B，C，D。 程序运行起来，4个文件的写入结果如下： A：ABCDABCD... B：BCDABCDA... C：CDABCDAB... Online search, as if still a Google pen questions , the problem involves the knowledge points are:,,

within Dofilter, application scenarios)6.jsp (implicit objects, common tags 7.cookie/session (Conceptual understanding; Life cycle, Session creation time, correlation method use)Three or five frame (more than 1 years work experience needs to focus on review of technical points)1.struts2 (Action-related questions 2.hibernate (core idea to understand; Development process 3.spring (Springioc and di; life cycl

limited.Heap area: Also known as dynamic memory allocation, usually refers to the program when it runs directly new memory, that is, an instance of the object. The Java garbage collector will be responsible for recycling this part if it is not in use.2. How to manage memory in Java　　　　　　　　　　3. Memory leaks in JavaA memory leak refers to a useless object (an object that is no longer being used) that keeps m

began to seize the free time to learn. The process of learning is as follows:1. Look up questionsThe first step of normal people will certainly look at the interview questions, I am no exception, in the process of watching, I found some articles written well, to my help is not small worth recommending, as follows:Java Surface test Complete (on) a lot of basic things, suggested first look.Summary of the

, multiple names with ",", ";", "" split, the first is used as an identifier, the other (ALIAS1, ALIAS2, ALIAS3) is an alias, and all identifiers must be unique within the IOC container;59. Bean Naming ConventionThe name of the bean follows the XML naming convention, but it is best to conform to the Java naming convention, which consists of "letters, numbers, underscores", and should form a good naming habit, such as "Hump", which starts with the firs

Spring is an open source framework, and spring is a lightweight Java development framework that emerged in 2003 by Rod Johnson in his expert one-on-one development and design Part of the concept and prototype derived from the elaboration. It is created to address the complexities of enterprise application development. One of the main advantages of the framework i

windows and activity?11. One activity opens another activity and another activity? What happened when I went back?12. How are constants defined in Java?13. Can the constant final string STR = "AB" be changed to "Abd"? Why?14. What is the role of stringbuffer?15. Write a method to exchange the values of two variables?16. Explain the usage of the task17. Do you have any questions?18. How much do you know abo

The scope of this article is not limited to the Java backend or Java Web, but some of them are examples of this, in other aspects, we can extrapolate, should also be able to get some inspiration.In the interview, we will find that some candidates are technically good, for example, in the Java Web backend, the

Old brother recruited an interview and asked me if I would like to attend the interview. Of course I would like to attend the interview and have a rare learning opportunity. To sum up, the old brother pays attention to the following aspects during the interview: first, the character is good or bad, people must be stead

Spring is an open-source development framework for Java Enterprise applications. Spring is primarily used to develop Java applications, but some extensions are for Web applications that build the EE platform. The Spring framework goal is to simplify

1. Introduction Spring is an open source framework that was created by Rod Johnson. It is created to address the complexity of enterprise application development. Spring uses basic JavaBean to accomplish things that were previously only possible by EJB. However, the purpose of spring is not limited to server-side development. In terms of simplicity, testability,

below is a list of 125 basic C # interview questions. These interview questions are simple and straightforward, covering the most basic concepts of C #, mostly related to object-oriented concepts. So if you're preparing a C # interview, I suggest you have to master these 125

Php programmer interview questions and answers (Basic theory) This article introduces an interview question for php programmers, with detailed answers. it is a basic theoretical content. if you have any friends, please refer to it.1. what does PHP mean? A: PHP is a server-based scripting language used to create ** websites. you can use PHP and HTML to ge

Turn!!!!http://hui.sohu.com/infonews/article/6331404387079946240----------Spring is the name of a series of open source tools maintained by pivotal, the most known of which is spring MVC, in fact, they are all Java components that are based on the spring framework and continue to be enhanced on one hand. Recently the

Spring Overview1. What is Spring?Spring is an open-source development framework for Java Enterprise applications. Spring is primarily used to develop Java applications, but some extensions are for Web applications that build the E

property name needs to be quoted , like the following name? {' name ': ' Csdn ', ' Age ': 11} 9. About the JVM There is a WAN (Lai) interview technique, you can ask the job seeker, what is the idea behind it, do you understand his principles, why do you do this, if you write yourself, how long do you want to do a basic version out? What are the GC, What are the differences in each JDK version, which algorithms are better, what is appropriate, wh

The most complete 69-way Spring noodles questions and Answers in historyCatalog Spring Overview Dependency Injection Spring beansspring annotations Spring data access spring aspect-oriented programming (AOP)

implementation of the factory pattern to eliminate the need for procedural singleton patterns and really allows you to isolate dependencies and configurations from the program logic.2.Spring Context: The context package, built on the core package, provides a framework for object access, some like the Jndi registrar. The context wrapper package is characterized by the beans package and adds support for internationalization (i18n), event propagation, t

PHP interview questions, with my answers and Analysis (1 ). Interview Question 11: use PHP to print out the time format of the previous day: 2006-5-, echo (), print (), print_r () difference 3. templates that can be used to separate HTML and PHP 4. how to implement PHP and interview question 1 1. use PHP to print the t