Java
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Semaphore source code analysis – java8
1. Characteristic analysis private final Sync sync; All mechanisms are implemented through the subclass AQS, so the im…… -
There are several content types for HTTP requests. What is the difference? What scenario is HTTP suitable for? What are the HTTP status codes?
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Brief introduction to RMI
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Summary of important concepts of common Java classes
Is to automatically convert the basic data type to the wrapper type; （1）Integer it = 200; Actually: integer it3…… -
Analysis of HashSet source code of Java collection
summary HashSet is implemented based on HashMap. The bottom layer uses the key of HashMap to save data, so that the el…… -
Java map traversal mode and performance test
Transferred from: For the traversal of map in Java, many articles recommend using entryset, which is much more effi…… -
List interface iterator – listiterator
Inherited from. 2 * 3 * 4 * 5 * 6 *, in]. Therefore, an iterator with a list length of N has (n + 1) possible cursor p…… -
The most important role of Java internal classes – implementing multiple inheritance
< span style="color:rgb(51,51);font-family:Helvetica,sans-serif;font-size:14px;"> 1、 Inner class definition: t…… -
On Java multithreading
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
What is SOA, SCA and microservices?
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Java multithreading.
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
The difference between instance variables and class variables, instance methods and class methods in Java
Transferred from: Instance variable < ol style = "font family: Verdana, sans serif; font size: 13px;" >< li …… -
Basic use of java reflection
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Comparison between sleep () method and wait () method
< H2 id = "sleep method vs wait method" > sleep() method vs wait() method Nofollow "> reference http://www.cn…… -
Java interface
The concept of interface in Java, an interface is a collection of all abstract methods. An interface needs to be defin…… -
Simple use of RMI?
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
How to generate code using mybatis generator?
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
HashMap obtains all keys and values respectively
I can't remember. I have to record it myself this time. I'll check it if I encounter it. It's a waste of time Although…… -
Implementing comparator interface in HashMap sorting in Java
1. By observing collections The source code of sort() is as follows: -
Java collection class details
Collection ├List │├LinkedList │├ArrayList │└Vector │ └Stack └Set Map ├Hashtable ├HashMap └WeakHashMap -
LinkedList source code analysis of Java collection
summary LinkedList, like ArrayList, implements the list interface, but its internal data structure is different. Linke…… -
How to use distributed configuration center
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Java annotation
summary Annotation is a concept introduced in Java 5. You can think of an annotation as a label that attaches a label …… -
List interface – java8
< H3 id = "1List interface features" > 1 List interface properties: package sourcecode. analysis; -
Restful style, rest request
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Log4j and South
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Analysis of cookies and sessions
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
How to call a third-party API to upload pictures?
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Several ways to generate JSON
This is the back-end small class of the monastery. Each article is shared from [background introduction] [knowledge an…… -
Java download EXECL table
Java uses POI to write data to the EXECL table and download it in two ways 1. Use the API of pool to create a table, d……