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Detailed explanation of Java single test void type method
preface When we learn Java, teachers or ordinary books say that there are eight basic types of Java. They are byte, in…… -
SSH combined with jQuery to achieve three-level linkage effect
This example shares the specific code of jQuery to realize three-level linkage for your reference. The specific conten…… -
Java removes simple instances of duplicate objects
Examples are as follows: Solution idea: create a temporary container ArrayList to store non duplicate objects. Input n…… -
The Jackson framework of Java can easily convert JSON
Jackson can easily convert Java objects into JSON objects and XML documents. He can also convert JSON and XML into Jav…… -
Spring websocket sample explanation
scene Websocket is one of the newly added features of HTML5. Its purpose is to establish a full duplex communication m…… -
A simple example of Java judging the length of Chinese string
Don't say much, code: The above simple example of Java judging the length of Chinese string is all the content shared …… -
Explain the loading order of classes in Java
This article introduces the loading sequence of classes in Java. Let's see the detailed introduction below: 1. When th…… -
Java produces the instance code of tree structure JSON data according to the content of database table
1. Use scenario The organization tree usually has an organization table with fields such as code, pcode and name 2. Co…… -
Explain in detail the implementation of AOP instance using Java Native proxy
When it comes to AOP, people will think of spring, because it is so powerful But we must be clear that AOP is a progra…… -
Java and TestNG use XML as data source to explain the data-driven example in detail
Java and TestNG use XML as data source to explain the data-driven example in detail TestNG is very powerful. It can be…… -
Java multithreading foundation lock class
As mentioned earlier, the JVM provides the synchronized keyword to achieve synchronous access to variables and inter t…… -
Method example of binary processing based on shift operation in Java
This paper describes the method of binary processing based on shift operation in Java. Share with you for your referen…… -
Fast JSON in Java generates and parses JSON data (serializes and deserializes data)
This article explains two points: 1. Fastjson generates and parses JSON data (for example: four common types: JavaBean…… -
Using log4j to output logs of different packages to different files
preface With the increasing scale of the project, new modules will be introduced continuously. Different modules will …… -
Java regular expression to extract the required characters and put them into the array [ArrayList array de duplication function]
This example describes the implementation of Java regular expression to extract the required characters and put them i…… -
Overview and implementation steps of picture verification code
I Picture verification code overview: Many websites have this implementation effect: In order to improve the security …… -
Spring MVC — detailed explanation of data binding and form tags
Data binding and form labels Data binding Data binding is a feature that binds user input to the domain model. In the …… -
JSP, struts, spring and mybatis to realize the modular splitting of front-end page functions
Front end page function modular split When a system has many functions, it is impossible to write the pages of all fun…… -
JSON parsing and serialization using Jackson in Java
Common JSON class libraries under Java include gson, JSON lib and Jackson. Jackson is relatively efficient. Jackson is…… -
Detailed steps to close Alipay’s confidential payment procedures
As one of the most commonly used applications in our daily life, Alipay has become the virtual wallet of people. But r…… -
Detailed explanation of websocket + spring sample demo (sockjs library has been used)
1. Introduction As the next generation web standard, HTML5 has many remarkable new features, such as canvas, local sto…… -
Java Apache POI reads and writes Word Doc files
Reading and writing Word Doc files using poi The hwpf module of Apache POI is specially used to read and write Word Do…… -
Summary of difficulties in realizing the function of an Android lock screen app
Customize a beautiful and practical lock screen app. If it can win the recognition of users and replace the lock scree…… -
Android foundation summary part 2: four launchmodes of activity
Today we are going to talk about the four launchmodes of activity. Launchmode plays an important role in the jump proc…… -
Three implementation methods of regularly executing tasks in Android (recommended)
In Android development, there are three implementation methods for regularly executing tasks: 1、 Use the sleep (long)…… -
Android multi-level tree list control
In the process of developing apps, we often encounter the effect of multi-level list display. There are no list contro…… -
Android foundation summary part 8: create and call your own ContentProvider
Today, let's explain how to create and call our own ContentProvider. In the previous two articles, we talked about how…… -
In Android, there are two methods to respond to the click event of the button inside the listview in the activity
Recently, someone in the communication group asked a question: how to respond to the click event of the button inside …… -
Design and implementation code of Android custom soft keyboard
I accidentally found the android.inputmethodservice.keyboard class, that is, Android can customize the keyboard class.…… -
Resolve Android claims and permissions
Android defines a permission scheme to protect resources and functions on the device. For example, by default, applica…… -
Android foundation summary part 9: detailed explanation of intent application
Today, let's talk about the principle and application of intent in Android. We have summarized several important compo…… -
Great example of Android barrage effect
Many projects need to use the barrage effect, especially when playing the video, you need to display the barrage sent ……