Java
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Detailed analysis of HashMap source code (JDK1.8)
3. Variable definition The above defines some variables that will be used. It's good to be familiar with them. 3.1 tra…… -
【SpringCloud】01. Differences between common software architectures
Differences among MVC, RPC, SOA and microservice architecture: 1、 MVC architecture MVC architecture is a single archi…… -
【SpringCloud】04. Creation of springcloud Eureka server and client
!!! [scode type = "yellow"] version: SpringBoot 2.0. 0.M3 SpringCloud Finchley. M2 JDK 8 [/scode] !!! SpringCloud Eure…… -
Analyze the implementation principle of AQS through reentrantlock
For Java developers, they will encounter multi-threaded access to public resources. At this time, they often lock to e…… -
Operation of and, or, XOR
The two data involved in the operation are "XOR" according to binary bits. Operation rules: 0 & 0 = 0; 0&1=1; …… -
Java knowledge necessary for testing (2) — advanced things of Java
Java advanced Class loading process Load (create class object) - > connect (verify - prepare - parse) - > class …… -
【SpringCloud】07. Communication between applications
Inter application communication HTTP vs RPC 1. Two restful invocation methods between services in spring cloud Method …… -
【SpringCloud】06. Eureka summary
1. Two notes: 1. @ enableeurekaserver - add on startup class It provides the function of service registration. After e…… -
Java knowledge necessary for testing (3) — collection and map related
Set correlation Differences among list, set and map Differences among vector, ArrayList and LinkedList Vector: dynamic…… -
Easy to remember questions in java test (I)
The author is good at c# language and will take the exam in April. Learning Java is just for the exam. How to learn th…… -
Java knowledge necessary for testing (I) — Java Foundation
Java Foundation How does Java work? The developed java source code is compiled into a platform independent bytecode fi…… -
Java notes: IO streams
1. IO flow understanding I in the IO stream is the abbreviation of the word input, It means input or read. O is the ab…… -
Java notes: reflection, annotation
1、 Reflection 1. Reflection mechanism The related classes of reflection mechanism except a Java Lang. class, the rest…… -
Java notes: Java object oriented
1、 Method 1. Overview Methods can also be called functions. In other languages, the concepts and syntax of methods an…… -
Java notes: common classes
For the use of built-in classes and methods in Java, we can usually read the corresponding API documents, but we still…… -
Java notes: Collections
A collection is a kind of container object, which is used to store objects, or stored references to objects. It is not…… -
Java notes: arrays, exceptions, generics
1、 Array Array is also a reference type. Its parent class is object. It is declared with "data type []". For example,…… -
Summary of website performance optimization and spring integration redis
Now more and more places need non relational databases. Recently, the website has been optimized. Of course, after the…… -
Service registry and provider of spring cloud (Eureka server and Eureka client)
1、 Building a service registry using Eureka server 1. Maven dependency 2. Configuration file (application. YML) 3. St…… -
Authentication of Shiro combat series (V)
It is recommended to learn Shiro to read the official documents. Although you may not understand it, it is recommended…… -
Java time conversion
This example is enough to illustrate how data of date type is converted to long type, and how long type date is conver…… -
Shiro actual combat series (7): real
Realm is an application specific security data access platform (such as users, roles and permissions). Realm converts …… -
Spring cloud config
What are the main applications of the configuration center, that is, the config component in spring cloud? This articl…… -
List processing of new features in Java 8
grouping: Filter (single condition): Filter (multi criteria): -
Java generates PDF and operates on PDF content
Although there are many online tools that can export PDF or word or convert to PNG format, I think we still need to kn…… -
JDBC framework of spring (12)
JDBC framework overview When using an ordinary JDBC database, it will be troublesome to write unnecessary code to hand…… -
Explanation of IOC, bean and scope of spring (III)
The spring container is the core of the spring framework. The container creates objects, connects them together, confi…… -
Introduction example of spring (II)
Any programming technology, especially the introductory example, is usually Hello world, and I also follow this indust…… -
Renren open source code generator
This article mainly includes three parts: introduction, code generation demonstration, code analysis (not very in-dept…… -
Form processing in spring (17)
Form processing is very common in actual development, such as login, registration, addition, modification and so on. I…… -
Shiro actual combat series (4) configuration
Shiro configuration Shiro is designed to work in any environment, from the simplest command-line application to the la…… -
Spring Boot:The field file exceeds its maximum permitted size of 1048576 bytes
Error message: the field file exceeds its maximum allowed size of 1048576 bytes because Tomcat is embedded in springbo……