包含标签：Java 的文章
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Perfect solution for Java Lang.outofmemoryerror handling errors
Reasons: the following are common: 1. The amount of data loaded in the memory is too large, such as taking too much da…… -
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…… -
Using cookies to remember user’s account and password in Java Web
The function of remembering the account and password needs to be used in the graduation project. I found a solution on…… -
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…… -
Spring MVC construction and configuration details
Now the mainstream web MVC framework is spring MVC in addition to struts. Therefore, this is also the mainstream frame…… -
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…… -
Java callback method details
Callback is defined in Wikipedia as: In computer programming, callback function refers to the reference of an executab…… -
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…… -
Detailed explanation and simple example of cookie in Java
Detailed explanation of cookies in Java The operation of cookies in Java is relatively simple. It mainly introduces th…… -
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…… -
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 …… -
Detailed explanation of scala applet and example code
Detailed explanation of scala applet 1. interactive mode In the command line window, enter the scala command: First …… -
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…… -
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…… -
15 top Java multithreaded interview questions (with answers)
Multithreading and concurrency issues are an essential part of any Java interview. If you want to get a front desk inf…… -
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…… -
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…… -
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…… -
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…… -
Detailed explanation of encryption and decryption function implemented by Java based on DES symmetric encryption algorithm
This paper describes the encryption and decryption function of Java based on DES symmetric encryption algorithm. Share…… -
Detailed explanation of Java backend to realize unified code scanning payment: wechat
Recently I finished a project and just had nothing to do. The product manager arranged a task for me. Make a function …… -
Detailed explanation and examples of Java statement block
Java statement block I still remember when I first read the programming books of C, C + + and Java, there was an intro…… -
Java encryption and decryption function example based on AES symmetric encryption algorithm
This paper describes the encryption and decryption function of Java based on AES symmetric encryption algorithm. Share…… -
Detailed explanation of three methods of converting list into map in Java
Detailed explanation of three methods of converting list into map in Java In this article, we introduce three methods …… -
Detailed explanation of symmetric encryption using Java (DES, 3DES, AES)
There are two sentences: 1) Algorithms and data structures are an important part of programming. If you lose algorithm…… -
Deep understanding of spring multi data source configuration
We often encounter the problem of multiple data sources in projects, especially in projects such as data synchronizati…… -
Java decimal to binary, octal, hexadecimal string
Decimal to binary class DecToBin { public static void main(String[] args) { //System.out.println("Hello Worl…… -
Collection of Java interview questions and answers (122 basic questions and 19 code questions)
A collection of java basic interview questions and answers (122 basic questions and 19 code questions). The details ar…… -
Detailed explanation of Java chart class library
abstract In the development of background sites using Java, chart and report functions are indispensable. This paper r…… -
Explain in detail the simple addition, deletion and modification through JDBC (take MySQL as an example)
Foreword: what is JDBC Java database connectivity (JDBC) is an application program interface used in the Java language…… -
Java implementation traverses all files under the folder (recursive call and non recursive call)
Java traverses all files under the folder (recursive call and non recursive call) 1. Do not use recursive method calls…… -
Example code of Excel file upload and download based on spring MVC
Recently, I encountered a demand. I need to download the excel template, upload it for analysis and store it in the da……