core java interview

Java interview questions, Java interview questionsInterview is something that everyone has to go through. Most people have more than one interview. Here we will summarize the latest interview questions for 2016, so that you can ge

string constant buffer, and the constant "XYZ" is the one in the buffer, no matter how many times it occurs. New string every time it is written, it creates an object that, if previously used ' XYZ ', does not create "XYZ" itself, and takes it directly from the buffer------additional interview tips. If during the interview you feel like you can, the last interviewer asks you what you have to ask, and you c

One of the interview summaries: Java handles linked list questions during the interview and java handles themThe linked list is often used in interviews. This article has referenced some other articles and added my own summary. Basically, every algorithm has been tested and optimized.Algorithm Daquan (1) there are some

[Java interview] basic knowledge, java interview [Java interview] basic knowledge Java basic knowledge summary, mainly including data types, string classes, sets, threads, time, regular

JAVA advanced interview Summary-JVM, java interview-jvm 1. Sun HotSpot VM is a self-embedded Virtual Machine in JDK and Open JDK. It is also the most widely used Java virtual machine. 2. JVM Memory Distribution Program counter: it is a small memory space and can be seen as

Last week wrote an article, database aspects of interview skills, how to display their ability from the table, courtesy of the administrator to lift, put in the home, but also thanks to you love, two days in the harvest of nearly 770 clicks, also once entered the 48-hour hot list.In order to thank the Administrator and everyone for their support, and then based on my interview experience, an original articl

execution.Surround notification is one of the most common types of notifications. Most interception-based AOP frameworks, such as Nanning and JBOSS4, provide only surround notifications.The concept of pointcut (pointcut) and connection point matching is the key to AOP, which makes AOP different from other old technologies that simply provide interception functionality.The pointcut enables the location notification (advice) to be independent of the OO hierarchy. For example, a around notificatio

[Csdn exclusive interview] if your boss comes to chat with you, you should pay attention to it, because it is probably not just a casual conversation. According to an authoritative survey,85%The supervisor is fond of chatting to check the current situation of his/her subordinates, this includes whether you have complained about the current situation of your work, whether you have new ideas about career development, whether you agree with some of the c

Java basic interview (1) and java basic interview 1. When I use the final keyword to modify a variable, can the reference not be changed, or can the referenced variable not be changed? When you use the final keyword to modify a variable, it is suggested that the variable cannot be changed, and the content in the object

Java interview-Hibernate summary, java interview-hibernate 1. Hibernate Retrieval Method Ø navigation object graph retrieval (navigation to other objects based on the loaded objects .) OID retrieval (the object is retrieved Based on the OID of the object .) Ø HQL search (using an object-oriented HQL Query Language .)

shock is very normal, at this time must not lose heart, from each interview to sum up their own shortcomings, not to make up for their knowledge, then you will find that the job search is not so difficult, Ask to ask about those things. I do not specifically say which company's interview, that is not good for the company. First of all, summarize some of the most important points of knowledge; Then, analyze

Logical Thinking interview questions-java backend interview-,-java backend(-1) Preface I recently participated in an interview and was very interested in the pen questions. I will return to Baidu. Thinking about these questions reminds me of the association in modeling. I fe

Concise answers to several java interview questions, concise java interview questions The difference between equal and = in java: The equal method is used to compare object references unless it is overwritten (such as String class and basic type package class. And ==except f

the main position. So how to review good technical points is necessary to find a good job (but also a large part of the luck component in it). For fresh students, because of the limited skills in school, so in the beginning of the interview after several companies, the feeling of shock is very normal, at this time must not lose heart, from each interview to sum up their own shortcomings, not to make up for

, because the new learning is not very familiar, according to their own situation to choose)3. Browser cross-domain issues (foreground system calls can use JSONP to implement cross-domain browser issues, last year the trainees spent a few hours to learn this, only with this technology into the job 8K. )4.webservice (This technology already has an alternative technology, if not, can not take the time to review)5.Linux (the water is too deep, just talk about yourself in the project in the deployme

that cannot be placed into a lifelong home garden, it triggers a full collection (MAJOR-GC), which may also involve compression in order to make enough space for large objects. JVM parameters related to garbage collection: -XMS/-XMX---The initial size of the heap/maximum size of the heap -XMN---The size of the young generation in the heap -XX:-DISABLEEXPLICITGC---let System.GC () not have any effect -xx:+printgcdetail---print GC details -xx:+printgcdatestamps---Pri

rest) {if (Rest 0 | | Total 0) {// If rest or total is less than 0, throw an exception, you can write an exception handling class to inherit runtimeexception throw ...} //If rest is 0, indicating that this is the last red envelope, return the balance directly if (rest = 0) { Span class= "Hljs-keyword" >return total; } //take the balance average (to add the number of this time) long per = total/(rest + 1); //the random number of 1 to the average of the balance (mathematical expectation?) ) long

Linked list is often in the interview, this article refers to some other articles, together with the small series of their own summary, the basic algorithm has been tested and optimized.Algorithm Daquan (1) There are also some list problems in the single linked list, which will be sorted out in the future.* REFS:* http://blog.csdn.net/fightforyourdream/article/details/16353519* http://blog.csdn.net/luckyxiaoqiang/article/details/7393134 easy to handle

of STRUTS1 is mainly implemented by Actionform, which is similar to JavaBean, which contains several readable and writable properties for storing data and data validation. In general, an action is equipped with a actionform.Struts1 views are primarily implemented by JSPs. The data that the JSP displays can come from actionform, or it can be the data that the action holds in scope (request,session,application). Of course, using struts's own labels can be a great simplification.After using STRUTS

of STRUTS1 is mainly implemented by Actionform, which is similar to JavaBean, which contains several readable and writable properties for storing data and data validation. In general, an action is equipped with a actionform.Struts1 views are primarily implemented by JSPs. The data that the JSP displays can come from actionform, or it can be the data that the action holds in scope (request,session,application). Of course, using struts's own labels can be a great simplification.After using STRUTS