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1. Brief introduction of bubble sorting Bubble Sort, also known as Bubble Sort, is a simple sorting algorithm. It repeatedly visits the columns to be sorted, compares two elements at a time, and exchanges them if they are in the wrong order. The work of visiting a number of columns is repeated until no exchanges are needed, that is, the ...

It is just a most common registration and login page written by Java Web for beginners. You only need to enter your user name and password Only part of the java code is listed and explained. The database, configuration process, configuration file and html front-end interface follow their own capabilities I First use the JDBC utils tool class ...

Servlet quick start Introduction to Servlet Servlet: short for Server Applet, it is the program (code, function implementation) of the server, which can interactively process the request sent by the client to the server and complete the operation response. Tracing back to the origin, Servlet is a technology of sun company to develop dynamic w ...

catalogue 1. Common java multi project 1.1 create parent project 1.2 creating subprojects 1.2.1 create subproject children1 1.2.2 create subproject children2 and use subproject children1 1.2.3 create subproject children3 and use subproject children2 1.2.4 adding project files 1.2.5 operation items 2. web multi project 2.1 create paren ...

The login interface is available for every project, and it is also a small start of a project. How to design the page and the corresponding logic. 1. Interface design Everyone has different ideas and aesthetics about the interface. This time, we mainly focus on the implementation of login logic. The languages required for interface design inc ...

​ Personal project - Concurrent file download assistant Expected and actual time consumption of each module PSP2.1Personal Software Process StagesEstimated time (minutes)Actual time (minutes)Planningplan6030· Estimate·Estimate how long this task will take14401080Developmentdevelopment1080· Analysis·Demand analysis (including ...

mybatis Dependency used (gradle) //mybatis dependency compile group: 'org.mybatis', name: 'mybatis', version: '3.5.6' // mysql compile group: 'mysql', name: 'mysql-connector-java', version: '8.0.22' // mybatis paging plug-in compile group: 'com.github.pagehelper', name: 'pagehelper', version: '5.2.0' Interface class { ...

3. Local Method Stack The local method stack is java The virtual machine needs to provide memory space for some local methods when they are called, which refers to those that are not java How to write code, because Ours java Code has some limitations, it sometimes can't deal directly with the bottom level of our operating system, so it need ...

1,Insert 1) Insert test @Test void testInsert(){ User user = new User(); user.setName("tuwer"); user.setAge(8); user.setEmail("abc@qq.com"); // id will be generated automatically int res = userMapper.insert(user); System.out.println(res); System.out.println(user); } 2) Primary key policy @TableId ...

1. Introduction to JDBC 1. What is JDBC? 2.JDBC writing steps 2. How to Get Database Connections Preparations: 1. Create a new lib folder under the project 2. Import the jar package into the lib directory 3. Add the imported jar package to the project through Add as library 4. Create related packages and test classes 5. Create ...