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home pagespecial columnjavaArticle details0High frequency interview question: a picture to thoroughly understand Spring circular dependencyJava general Published 10 minutes ago1 what is circular dependency?As shown in the figure below:BeanA class depends on BeanB class, and BeanB class depends on BeanA class. This dependency forms a closed loop ...

When I first saw this topic, I was shocked. I analyzed that it was very unreasonable for us to program, and thought it was impossible. Variable a should be equal to the three values of 1, 2 and 3 at the same time under the same situation. This is a myth, no less than Goldbach's conjecture of 1 + 1 = 1, but everything is possible. Out of curiosi ...

Pure js calendar component learning notes The following records the problems encountered in the process of completing the calendar component in pure js Problems encountered 1. Drop down menu implementation The display of the drop-down menu and the style that will appear after clicking the option box are written in advance For example, t ...

1, Context switch:          In concurrent programming, it is not that the more threads, the higher the efficiency. Too few threads may lead to insufficient utilization of resources. Too many threads may lead to fierce competition for resources, and then frequent context switching will cause additional ov ...

catalogue 1. Known array var stringArray = ["This", "is", "Baidu", "Campus"] 2. The string foo = "get element by ID" is known. Write function to convert it into hump representation 3. Known array var numberArray = [3,6,2,4,1,5]; Apply array API for operation 4. Output today's date in YYYY-MM ...

4 thread safety of collections 4.1 set operation Demo (demonstration) NotSafeDemo: import java.util.ArrayList; import java.util.List; import java.util.UUID; /*** Collection thread safety case */ public class NotSafeDemo { /** * Multiple threads modify the collection at the same time */ public static void main(String[] args) { L ...

MySQL advanced - Notes - 01 Video of this article: Dark horse MySQL advanced 1, MySQL architecture 1-1 overview of MySQL architecture The entire MySQL Server consists of the following components: Connection Pool: Connection Pool componentManagement services & Utilities: management services and tools componentsSQL interface: SQL i ...

Encapsulate MyBatis   Output results resultType Resulttype: execute sql to get the type of ResultSet conversion, using the fully qualified name or alias of the type. Note that if a collection is returned, it should be set to the type contained in the collection, not the collection itself. resultType    And resu   ltMap can ...

1, Picture 1,Picture library comparison 2,LRUCache principle 3,Picture loading principle 4,How to implement the picture library by yourself? 5,Glide Source code analysis 6,Glide What cache is used? 7,Glide How does the memory cache control its size? 2, Network and security mechanism 1.Network framework comparison and source code analysis ...

Introduction to day10 function Summary: Elementary functionParameters of functionReturn value of function 1. Initial function What exactly is a function? Function can be regarded as a collection of a lot of function code. def Function name(): Write code in function ... ... Function name # For example: # Define a function ...