object oriented interview questions

(avoid loss of modification) 2) Level two block protocol: increase transaction T on the basis of the first level blocking protocol must read the data R before reading the lock, you can release the read lock after reading (to avoid loss of modification and read dirty data) 3) Level three block protocol: increase the transaction T on the basis of the first level blocking protocol the lock must be read before the data R is read, until the end of the transaction is released (avoid loss of modificat

Modelandview and Viewresoler2. How do I let the caller know when a Class object property has changed?A: Java event time monitoring, which is triggered when the Set method changes properties, this mode can also be understood as the observer pattern, specific view: Observer pattern simple case and descriptionIO NIOStream-oriented bufferingBlocking IO non-blocking IONo selectorThe difference between Java NiO

the reuse of the cell without confusion. After the data is configured, by updating the constraint, the frame of the last control can be determined only by determining the height that the cell actually needs, and caching it, the next time it is acquired, the judgment exists, and if it exists, it returns directly. Therefore, it is calculated only once.20. How does the UITableView calculate the content height? Why does the proxy method that gets the row height call the data bar several times when

is read, and the way in which MySQL is synchronized from the slave Database 52. MySQL storage engine 53. Default isolation level for MySQL and other isolation levels 54. Reverse a linked list (use three pointers, but send only one at a time) 55. Implementation Principles of Spring AOP. 56. When will Memory leakage occur? What exceptions will Memory leakage cause? 57. Have you used autowire annotation? 58. Spring bean Injection Method 59. execution sequence of various SQL statements, such as sel

The Java Collection framework is the foundation of the Java programming language and is an important knowledge point in the Java interview. Here, I've listed some important questions and answers about the Java collection.In addition, the Code of the rural network before also collated an article on the Java Collection interview

The Java Collection framework is the foundation of the Java programming language and is an important knowledge point in the Java interview. Here, I've listed some important questions and answers about the Java collection.In addition, the Code of the rural network before also collated an article on the Java Collection interview

and the number of books repaid on the current day;B) Real-time reports:I. The number and number of books lent to each type of books;Ii. List of all expired books and users in the current system and their Expiration daysIii. Number of books borrowed by all users in the current system, which are listed by users (including those who do not borrow books). Please write the SQL statement to meet this requirement: Database Application:Write a series of SQL statements to describe the complete borrowing

I recently saw a blog post posted by Lao Zhao, "questions I asked during the interview with. Net/C # programmers". I tried to answer this question and I forgot to add it: What is. Net? What is CLI? What is CLR? What is Il? What is JIT and how does it work? What is GC? How does GC work? What is. net Dot Net is a complete set of platforms proposed by Microsoft in 2000, including the underlying operating sy

JSP Servlet interview questions The following is an interview on JSP Servlet. We are willing to have some conflicts with the previous interview summary. However, it does not affect our learning. Therefore, we can continue to explore Jsp interview

Oracle interview questions-Technical This may be an article you have been looking forward to. while paying attention to this part of technical questions, please be sure to read personal questions and answers during the interview. The answer here is not comprehensive. These

and John Doe. The reason is that in a function, the behavior of this depends on how the JavaScript function is called and how it is defined, not just how it is defined.In the first console.log () call, Getfullname () is called as a function of the Obj.prop object. So, the context refers to the latter, and the function returns the FullName of the object. Conversely, when Getfullname () is assigned to the te

does. net2.0 provide to avoid excessive system overhead caused by boxing/unboxing? Is string value type or reference type? Why is the string object in. Net set to immutable? If you can answer most of the questions perfectly, You can undoubtedly claim that you are "proficient in. Net. Good luck!(To clarify, the purpose of my post is not to specifically evaluate the quality of these

with the Python language becoming more and more popular in recent years, more and more people choose the Python language as their career direction. How to get good results in the right company's interview, and finally successfully get an offer is every Python developer to be careful of things, the following is the author of the Python programmer in the interview often asked

In the Java Pure Grammar interview, mainly encountered some of the basic interview questions, summarized here!First, to talk about final, finally, finalize the difference. final-modifier (keyword) If a class is declared final, it means that it can no longer derive a new subclass and cannot be inherited as a parent class. Therefore, a class cannot be declared a

Look at the interview questions, just to check the gaps, to see their own aspects still do not understand. Remember not to think that the back of the test, it is all right, it is best to understand the principle behind, so that the interview can be talked about. Otherwise, a little bit of the level of the interviewer can see, whether there is true knowledge or ju

Java and C common technical interview questions 2015 (Continuous updates ...), 2015 updating 1. Differences between overwrite and overload Overload is an Overload. It uses the same name as an existing member to declare attributes or methods, but the parameter list is different from that of the original member. Override is mainly used for method rewriting between the parent class and the subclass, that is,

You must prepare the Python programmer interview questions in advance !, Python programmers In recent years, as the Python language has become increasingly popular, more and more people have chosen the Python language as their career direction. How to get a good result in an interview with your favorite company and get an offer is a matter that every Python devel

Java Collection related interview questions and answers Interview questions1.JavaWhat is a collection frame? What are some of the advantages of a collection framework? There are collections in each programming language, and the original Java version contains several collection classes: Vector, Stack, Hashtable, and array. With the extensive use of the collection

After returning from the Cisco interview, I reviewed these questions and thought I could answer a few questions. However, it seems that I did not answer well again. I hope you can answer them!1. View on Project Management? As PM, what do you think is the key to project success? 2. What are the opinions on the project documents? How to effectively manage many do

type, not the instance. Method (SB); You can modify this instance by means of a method, but this variable cannot be modifiedJava memory leaks as the C + + programmers understand memory leaks are defined on Wikipedia as "in computer science, memory leaks can occur if programs do not properly manage memory allocations." In object-oriented programming, this is a memory leak if an