Template method pattern
Introduction
The template method pattern is a simple and commonly used design pattern. It is a code reuse technology based on class inheritance. Its structure only has the inheritance relationship between the base class and the derived class. A template method is a concrete method that gives a top-level logical flow fra ...
Posted by JonathanS on Sun, 22 May 2022 20:11:21 +0300
Stage I: JavaSE learning 07
1. Comparison of object-oriented and process oriented ideas:
* * process oriented: * * is a process centered programming idea. Each step of realizing the function is realized by yourself
* * object oriented: * * is an object-centered programming idea, which realizes specific functions by commanding objects
Relationsh ...
Posted by barteelamar on Sun, 22 May 2022 09:05:50 +0300
Series catalog
Spring Security rights management system combat - 1. Project introduction and development environment preparation
Spring Security permission management system combat - 2. Implementation of logs, interface documents, etc.
SpringSecurity rights management system combat - three, the main page and interface implementation
SpringSecur ...
Posted by MattDunbar on Sun, 22 May 2022 07:57:28 +0300
Get the source code at the end
Development language: Java
Development tool: IDEA/ Eclipse
Database: mysql5 seven
Application service: Tomcat7/Tomcat8
use framessm+vue
JDK version: jdk1.0 eight
Preface introduction
System management will also carry out overall intelligent operation through computers. There are many management and ...
Posted by Daveyz83 on Sun, 22 May 2022 02:18:24 +0300
introduction
In Go language, we usually use panic and recover to throw and catch errors. This pair of operations has no problem in a single coprocess, but in a multi coprocess, imagine the following two problems. Suppose we now have two processes:
If there is A panic in process A, will process B die because of the panic in process A?
If A pani ...
Posted by SUNNY ARSLAN on Sat, 21 May 2022 18:14:01 +0300
The source code is in mine github and gitee Get in
introduce
Singleton Pattern is one of the simplest design patterns in Java. This type of design pattern is a creation pattern, which provides the best way to create objects.
This pattern involves a single class that is responsible for creating its own objects while ensuring that only a single o ...
Posted by Kunax on Sat, 21 May 2022 05:12:22 +0300
catalogue
1 investment
2 coffee shop code display
2.1 ideological source
2.2? Pictures and videos
2.3 code
2.4 write at the end?
1 investment
**There is only one criterion for real investment, that is, whether it is creating real value and whether this value is beneficial to the overall prosperity of society** Adhering to this standar ...
Posted by solar_ninja on Fri, 20 May 2022 23:52:30 +0300
foreword
volatile is a lightweight synchronization mechanism provided by the Java virtual machine.
What is the role of the volatile keyword?
Two functions:
1. Ensure that the shared variable modified by volatile is visible to the total number of threads, that is, when a thread modifies the value of a shared variable modified by volatile, the ne ...
Posted by c4onastick on Fri, 20 May 2022 19:43:48 +0300
introduction
Spring Boot provides an excellent exception handling mechanism. The default implementation of ErrorController is good at catching and handling exceptions. In addition, you can also implement @ExceptionHandler yourself to catch and handle specific exceptions. However, there is room for improvement here:
Even if a custom @Exceptio ...
Posted by MattWeet on Fri, 20 May 2022 18:31:37 +0300
catalogue
Business background
Business background
Generally, some record tables of the business system have some uniqueness constraints. For example, duplicate names are not allowed under the same user; You can usually create a unique index on the specified column, for example:
CREATE TABLE `novel`
(
`id` bigint(20 ...
Posted by JayBachatero on Fri, 20 May 2022 14:36:13 +0300