java programming interview questions and answers

Tags: sql face question SQL exerciseStructure of the tableStudent (s#,sname,sage,ssex) Student tableCourse (c#,cname,t#) timetableSC (s#,c#,score) score tableTeacher (t#,tname) Teacher table 1. Creating the corresponding table CREATE table student (' s# ' int, sname varchar (+), Sage int, s Sex varchar) The following omit 2. Inserting data insert into student Select 1, ' Zhang San ', 18, ' Male ' union ALL select 2, ' John Doe ', 18, ' Male ' Unio n all .... 3. Check the number of all stud

Today, I read a blog on innovative workshop interview questionsQuestion: ABCDE five-member fishing, sleep, a woke up, threw away one fish, divided the rest into five points, took one, and left; B woke up and threw away one, divide the remaining parts into five portions and take one portion. Then CDE obtains the fish according to the above method. How many fish have they caught? It is interesting that many of the students participate in the solution. I

From: http://www.leezao.cn/article.asp? Id = 465 This article focuses on several common C # And. Net classic interview questions, such as "differences between classes and structures in. Net", and "How many methods of passing values between ASP. NET pages ?", The answer is concise and concise, hoping to help readers who want to learn C # And. net. 　1. What is the difference between classes and structures i

statement in the non-partition table. However, if you query by non-partition field, the efficiency will be lower than the same statement of the non-partition table. However, as the amount of data increases, the cost gap will gradually decrease and tend to be equal. (Only about 5 million difference between 10% and) 6. CLR type Microsoft publicized CLR in a large space because database products were finally integrated into the. NET system. At the beginning, we were also excited and felt that some

From: http://topic.csdn.net/u/20070315/10/78d03595-b5fa-4853-ab02-37ed16c2ddb3.html Answers to the first group: 1) three ropes, the first ignition, the second ignition, and the third ignition After the first rope is burned (30 minutes), the other end of the second rope is ignited. After the second rope is burned (45 minutes), the two ends of the third rope are ignited, timing is complete after the third rope is burned (1 hour 15 minutes) 2) According

Question 1: "Please introduce yourself"Idea: 1. This is a required question for the interview. 2. The content should be consistent with your resume. 3. colloquial expressions as much as possible. 4. Do not talk about irrelevant or useless content. 5. The Organization should be clear and the layers should be clear. 6. It is best to write your skills in the form of text in advance. Question 2: "talk about your family situation"Train of Thought: 1. The

This article briefly introduces the interview questions for jsp programmers. For more information, see. JSP Question 1. What built-in objects does jsp have? What are their roles? A: JSP has the following nine basic built-in components (which can correspond to the six internal components of ASP ): Request client request, which contains parameters from the GET/POST request Response returned from the response

threadlocal, Blocking Queue, counting semaphore and concurrenthashmap are more prevalent. 15 Java Multi-threaded face questions and answers 1 Now there are T1, T2, T3 three threads, how do you ensure that T2 after T1 execution, T3 after the implementation of T2 execution? This threading problem is usually asked in the first round or during the phone

Linux Command lines, as well as the use of Linux commands for Linuxshell interaction, are the most attractive part of Linux and one of the most common topics in the interview. In this article, we will ask 10 important questions during the interview, which will certainly broaden your knowledge. 1. How to pause a running process and put it in the background (not ru

The answer here is not comprehensive. These questions can be explained from multiple perspectives. Maybe you don't have to give a full answer during the interview, you only need to answer your questions to familiarize the interview examiner with Oracle concepts. 1. Explain the differences between cold backup and hot ba

Interview and written examination are often indispensable for job hunting and recruitment. as a php programmer, more or less will have similar experiences hellip; hellip. The following are my PHP interview questions collected and sorted out, I hope to help my colleagues and find a suitable php development job! (Three in total) The following is the

To be honest, the following questions are all about finding a fault. It is very likely that you will not encounter it during the interview. However, when people "look for" the door, you only have to fight with him. 1. Have no work experience. Do you think you are suitable for our requirements? Stupid answer: But you are here to recruit new college students. A: I heard that a young tiger is rejected outside

the Thread class and implementing the Runnable interface. There are two types of synchronization implementation: synchronized, wait, and Y. 11. What is the difference between dynamic INCLUDE and static INCLUDE in JSP? Implement Dynamic INCLUDE with jsp: include action It always checks changes in the contained files and is suitable for containing dynamic pages and can contain parameters Static INCLUDE is implemented by using the include pseudo code and will not check the changes in the cont

efficient cache that allows multiple users to read, but only one user is allowed to write in order to maintain its integrity, how will you implement it? The biggest advantage of the lock interface in multi-threaded and concurrent programming is that they provide a lock for both read and write, which satisfies high-performance data structures and conditional blocking that you write like Concurrenthashmap. The question of a

One of Google's interview questions: there are eight balls of the same size, 7 of which are of the same weight, with a slightly heavier one. How can I use the balance to determine which ball is heavier only twice? Answer:For the first time, I took out 6 of them and placed them on the balance, each weighing 3. I can determine where the heavier one is. There are three situations: 3 on the left of the balance

20 Linux Command Interview Questions and answersQ: 1. How can I view the running level of the current Linux server? A: the who-r and runlevel commands can be used to view the running level of the current Linux server.Running level:0-downtime (do not set initdefault to 0) 1-Single User Mode 2-multiple users, but there is no NFS3-full multi-user mode 4-5-X116-Restart not used (do not set initdefault to 6) Q:

1. Use PHP to print the previous day in the format of 22:21:21 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->// Echo date ('Y-m-d H: I: s', time ()-60*60*24Echo date ("Y: m: d H: I: s", strtotime ("-1 day "));?>2. Differences between echo (), print (), and print_r ()ECHO is a language structure with no returned values;The print function is basically the same as the ECHO function. The difference is that print is a function with a return valu

is a function and has a return value. print_r is a recursive print that outputs array objects. 3. templates that can be used to split HTML and PHP So much, in fact, PHP itself is a template engine, I used smarty, common also PHPLib, FastTemplate, Savant here has a template engine list: http://www.sitepoint.com/forums/showthread.php? T = 123769 4. How to Implement PHP and JSP interaction? The question is a bit vague. SOAP, XML_RPC, Socket function, and CURL can all achieve this. If PHP and

Typical questions and answers from Oracle 1. Explanations of differences between cold backup and hot backup and their respective advantages answer: Hot Backup is applicable to databases in archive mode when the database is still working. Cold backup refers to the backup after the database is closed, applicable to all databases. The advantage of hot backup is that the database can still be used during Backup

Recently I saw an interview question from an innovative factory, which is very interesting. The following shows the Algorithm Implementation (Java code ). If you have a better algorithm, follow the instructions. ABCDE five-member fishing and sleep. A wakes up, throws one fish, divides the remaining fish into five points, and takes one copy. B wakes up and throws one, divide the remaining parts into five po