Java
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[introduction to Java] Day1 abstract class
The basic part has almost been explained. Today we begin to enter the Java improvement part. This part will be much mo…… -
[introduction to Java] day22 Java container class (V) HashMap source code analysis (I)
The first part mainly explains the structure, important parameters and methods in HashMap, as well as the places and a…… -
[introduction to Java] day15 revisiting Java generics — Generic wildcards and upper and lower boundaries
The last article introduced what generics are, why generics should be used and how to use generics. I believe you have…… -
One of the java reference types you must know — weak references
definition Weak reference is a reference created by using WeakReference. Weak reference is also used to describe non e…… -
JDK1. 8 new feature lambda expression simplification. There is an optimization method of for loop in if else
In the daily development process, being able to write the code does not necessarily mean being able to write the code …… -
Java method parameters can only be passed by value!
In common parlance, the transfer of method parameters is divided into two types: value transfer and reference transfer…… -
[difficult Java PROBLEMS] the execution sequence of try catch finally when there is a return
There is such a problem that everyone should be familiar with exception handling, similar to the following code: When …… -
[difficult and miscellaneous problems of Java] use Java core library to realize simple AOP
Spring is a very popular open source framework, and AOP (aspect oriented programming) is one of the most important con…… -
Programming architecture (07): web development of Java EE
Source code of this article: @ L_ 403_ 0 @ | gitee · click here 1、 Basic concepts 1. CS and BS architecture CS archit…… -
Java Concurrent Programming (08): executor thread pool framework
Source code of this article: GitHub · click here | gitee · click here 1、 Introduction to executor framework 1. Basic …… -
Programming architecture (03): Java collection container
Source code of this article: GitHub · click here | gitee · click here 1、 Introduction to collection containers Collec…… -
Java Concurrent Programming (04): inter thread communication, waiting / notification mechanism
Source code of this article: GitHub · click here | gitee · click here 1、 Concept introduction 1. Thread communication…… -
Java Concurrent Programming (07): detailed explanation of fork / join framework mechanism
Source code of this article: GitHub · click here | gitee · click here 1、 Fork / join framework Java provides fork / j…… -
Programming architecture (02): Java exception architecture
Source code of this article: GitHub · click here | gitee · click here 1、 Anomaly introduction Excellent program code …… -
Programming architecture (08): spring Mvc. Boot framework
Source code of this article: GitHub · click here | gitee · click here 1、 Spring framework 1. Framework overview Sprin…… -
Programming architecture (04): javaio stream file management
Source code of this article: GitHub · click here | gitee · click here 1、 IO stream classification @ h_ 301_ 3 @ 1. Di…… -
Fundamentals of Java EE (04): session tracking technology, detailed explanation of session and cookie
1、 Session tracking 1. Scene description For example, if you log in to a shopping website and your identity is recogn…… -
Java EE Basics (03): http request details, handshake and wave process introduction
1、 Introduction to HTTP protocol 1. Concept description HTTP hypertext transmission protocol is a transmission protoc…… -
Programming architecture (01): Fundamentals of Java programming
1、 Data type 1. Foundation type 整型：byte 、short 、int 、long 浮点型：float、double 字节型：char 2. Packaging type…… -
Java Concurrent Programming (02): thread core mechanism, basic concept extension
Source code of this article: GitHub · click here | gitee · click here 1、 Thread basic mechanism 1. Concept descriptio…… -
Fundamentals of Java EE (04): session tracking technology, detailed explanation of session and cookie
1、 Session tracking 1. Scene description For example, if you log in to a shopping website and your identity is recogn…… -
Fundamentals of Java (01): basic data types, core point sorting
1、 Basic type 1. Basic type Instead of using new, declare a variable that is not passed by reference, and the value o…… -
Fundamentals of Java EE (04): session tracking technology, detailed explanation of session and cookie
1、 Session tracking 1. Scene description For example, if you log in to a shopping website and your identity is recogn…… -
Java Concurrent Programming (03): multithreading, concurrent access, synchronization control
Source code of this article: GitHub · click here | gitee · click here 1、 Concurrency problem When multi-threaded lear…… -
Java Basics (03): process control statements, and algorithm applications
Source code of this article: GitHub · click here | gitee · click here 1、 Branch statement Process control statements …… -
Programming architecture (05): Java multithreading concurrency
Source code of this article: GitHub · click here | gitee · click here 1、 Multithreaded map 2、 Multithreading Foundat…… -
Java EE Foundation (01): servlet implementation mode, life cycle execution process
1、 Introduction to Servlet The server-side program written in Java is independent of the platform and protocol. Its m…… -
Java Concurrent Programming (01): thread creation mode, state cycle management
1、 Introduction to concurrent programming 1. Basic concepts Computer programs, procedures and rules related to the op…… -
Java Concurrent Programming (05): pessimistic lock and optimistic lock mechanism
Source code of this article: GitHub · click here | gitee · click here 1、 Resources and locking 1. Scene description M…… -
Java Basics (02): special string classes and related extension APIs
1、 Introduction to string class 1. Basic introduction String is a special data type and belongs to reference type. St…… -
Java EE Foundation (02): detailed explanation of servlet core API usage
1、 Introduction to core API 1. Servlet execution process Servlet is one of the three major components of Java Web (se…… -
The version upgrade of mybatis caused an abnormal problem in the input parameter resolution of offsetdatetime. Redo
background Recently, a data statistics service needs to upgrade the version of springboot from 1.5 x. Release upgrade ……