Programmer Think

Author: Tangyuan Personal blog: javalover.cc preface In the past, it was always called by friends, which was suspected of being close, so I'd better change the title for you later Because people come to see things, let's call them officials for the time being (inspired by Jin Ping Mei, one of the four famous works spread among the people) ...

Question A: House plate making Problem solving ideas from[1,2020]Cycle and accumulate all the time. Code example public class House plate making { public static void main(String[] args) { int sum = 0; for (int i = 1; i <= 2020; i++) { int x = i; while (x > 1){ if(x % 10 == ...

M5 (project) - 01 - development document of distributed foundation of Shangsi Valley grain mall project Distributed Foundation 1, Environment construction Installation of various development software Virtual machine: docker,mysql,redis Host: maven, idea (back end), vscode (front end), git,NodeJS Version and installation process Quickly b ...

Book management system (SSM framework integration) preface The simple book management system implemented with SSM framework can carry out basic CRUD functions. 1, What is the SSM framework? 1.SSM SSM (Spring + spring MVC + mybatis) framework set is integrated by spring and mybatis (spring MVC is part of spring), which is often used a ...

Java-12 enumeration classes and annotations 1, Enum class (enum) 1. Use of enumeration class 1. Understanding of enumerating classes: there are only a limited number of objects in a class, which is uncertain. We call this class enumeration class 2. When you need to define a set of constants, it is strongly recommended to use enumeratio ...

"Crazy learning of Java design patterns: prototype patterns" Mode type The prototype pattern belongs to the creation pattern, which provides the best way to create objects. Two, schema definition Q: what is a prototype model? Answer: Prototype Pattern is to use prototype instances to specify the type of objects to be ...

netty encoding and decoding and packet sticking and unpacking processing Codec When you send or receive a message through Netty, a data conversion will occur. The inbound message will be decoded: from byte to another format (such as java object); If it is an outbound message, it will be encoded into bytes. Netty provides a series of practi ...

1. Agreement: an agreement. 2. Protocol layering: (1) OSI (open system interconnection) seven layer model (2) TCP/IP five layer model (3) TCP/IP four layer model Layer namefunctionRelated agreementsapplication layerResponsible for communication between applications HTTP SSH DNS Display layerConvert the network datagram into the package req ...

catalogue Title: answer: Explanation: Recently, I did a topic of multithreading synchronization. I used conditional locking to solve it. By doing this problem, we can have a basic understanding of the application of locks. This article will briefly explain it. Ps: after finishing, I found that this is the original question on Li buckle. T ...

Prometheus: Prometheus is an open monitoring solution. Users can easily install and use Prometheus and expand it The following will implement the whole process of a SpringBoot application accessing Prometheus 1.2 installation Linux Installation Download package specified on the official website: https://prometheus.io/download/ Download loca ...