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Click on "end of life", pay attention to the official account. Daily technical dry goods, delivered at the first time! Preface: introduce a simple MyBatis encryption and decryption method. Few people mention this method in their daily study and work, so let's talk about it. If you already know this method, ignore this article! ...

Class 1 loading, connection and initialization Class 1.1 loading process When a program uses a class, if the song class has not been loaded into memory, the system will initialize the class through the steps of loading, connecting and initialization. Generally, the class loader does not need to wait until the first use to load objects. Th ...

Project learning address: [ niuke.com C + + server project learning ] It took three hours to write the thread pool class. It was actually tested and can run normally. The performance test has not been done yet. I don't know how fast it can be compared with the traditional [immediate creation and immediate destruction] mechanism. I still ste ...

1, Set set 1.Set set 1.1Set set overview and features Duplicate elements cannot be storedWithout an index, you cannot use a normal for loop to traverse 1.2 use of set Store string and traverse public class MySet1 { public static void main(String[] args) { //Create collection object Set<String> set = new Tree ...

From: Micro reading https://www.weidianyuedu.com/content/2117161192623.html There are many popular programming languages on the market, such as Python , JAVA, Go, etc. you may think C language is very old and backward. If you have this idea, you may just be a beginner. Before I shared with you the definition and usage of several special stan ...

Crawl the latest epidemic data with Python The data of this major epidemic may change all the time. This blog will explain how to crawl real-time epidemic data, analyze the data and make the effect of data visualization. Summary of the report: Analysis of epidemic situation in China 1.1 display the specific situation of epidemic situation i ...

Packaging (familiar) Concept of packaging class Generally, the variables of basic data type are not objects. In order to meet the concept that everything is an object, it is necessary to package and encapsulate the variables of basic data type into objects, and the related classes responsible for declaring these variables as member variables ...

🌟 preface Hello, I'm Edison 😎 The last article said that we should sort out the whole series of C language; So I'm not idle for three days on New Year's day. No, today we start our second "branch statements and circular statements"; Let's get it! The link to the previous article is here: Roommates only need a king's time to ...

Several default ways of creating thread pools are provided in Java 8 Advantages of thread pool: less resource waste and improved thread reuse Create the top-level class executors. For thread pool class First, open the class and view the methods implemented by the class To sum up, several implementations are: //Single pass pool ...

Chapter 10: threads 10.1 thread overview Program is an ordered set of instructions, which is a static concept A process is a running program. A program runs many times to produce multiple processes, and one process corresponds to one program Thread is an entity of a process. It is the basic unit of CPU scheduling and dispatching. It is a sma ...