包含标签:Java 的文章
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Java JDBC connection database code and steps detailed and example code
Detailed explanation of JDBC connection database code and steps in Java JDBC connection database • create a program to…… -
[Java] BigDecimal implementation code for addition, subtraction, multiplication and division
java. math. BigDecimal There are four ways to make BigDecimal. Let me take a look at two of them first: The first: Big…… -
Inheritance of Java person, student and goodstudent and execution of constructor
There are three classes: person, student and goodstudent. Among them, student inherits person and goodstudent inherits…… -
Spring implements scheduled tasks with squertz
preface Speaking of scheduled tasks, the development partners must be familiar. Some things always need computers to c…… -
Implementation of SQL batch modification method in mybatis
In the project, I met the function that needs batch update. I originally wanted to use circular access to the database…… -
On java object-oriented (Abstract inheritance interface polymorphism)
What is inheritance? When the same attributes and behaviors exist in multiple classes, these contents are extracted in…… -
Summary of knowledge points of HashMap in JDK7
Several important variables in HashMap The default initial capacity must be the nth power of 2 The maximum capacity is…… -
Common exception classes in Java
1. java. lang.nullpointerexception We must often encounter this exception. The explanation of the exception is that "t…… -
Detailed explanation of Java data structure (linear table)
Chain storage and implementation of linear list Another way to realize the linear table is chain storage, that is, tho…… -
Java socket file transfer example code
Recently, I became addicted to learning socket, so I wrote a simple file transfer program. Client design idea: the cli…… -
Analysis of several cases of thread death in Java
The java thread conference ends in the following three ways, and is in a dead state after it ends 1. The execution of …… -
Java uses the nesting of conditional operators to complete the division of academic achievement
Title: use the nesting of conditional operators to complete this question: students with academic achievement > = 9…… -
Analysis of spring configuration file
Overview of spring configuration files brief introduction The spring configuration file is a "drawing" used to guide t…… -
Example of generating excel report file with Java
This simple operation will export data from the database, generate excel report and import Excel data into the databas…… -
Spring integrates the simple configuration method of quartz
However, it is rarely used directly in practical work. Spring quartz components are usually used, which can be automat…… -
Java image and byte array mutual conversion instance
Examples are as follows: File parsing: Fileimageoutputstream changed to fileoutputstream fileimageinputstream changed …… -
Explain the simple packaging and use of MySQL in detail
Source address https://github.com/YouXianMing/MySQL-Example Make sure your MySQL is running One of the database files …… -
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 …… -
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…… -
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 …… -
The mybatis interceptor implements paging
Final Dao layer result: The next step is to implement paging step by step. I To create a page object: It can be found …… -
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…… -
An example of paging using hibernate and struts 2
Thinking of learning a new thing every day, I prepared this hibernate + struts 2 to realize the page paging function. …… -
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 …… -
Detailed explanation and example code of Java timer (timer, TimerTask)
Java timer The two classes used to implement the timer function in Java are timer and TimerTask Timer class is a class…… -
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…… -
Implementation of distributed timed task framework based on Spring + quartz
Problem background Our company is a fast-growing start-up company with 200 people. Its main business is related to tou…… -
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…… -
Summary of Java methods for obtaining file extensions [regular and string interception]
This paper describes the method of obtaining file extension in Java. Share with you for your reference, as follows: Pr…… -
Java multithreading foundation lock class
As mentioned earlier, the JVM provides the synchronized keyword to achieve synchronous access to variables and inter t…… -
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……