Recent Posts
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Semaphore source code analysis
Semaphore source code analysis 1. Brief introduction to semephore generally speaking, the commonly used synchronizat…… -
Java collection framework [list / set]
1. Basic introduction: 7. Use LinkedList to realize the stack and queue structure, that is, the use of its unique addf…… -
Java collection framework map
Title: Java collection framework map date: 2017-08-09 14:38:12 Tags: Collection framework categories: - Java public cl…… -
Analysis of synchronized principle
Analysis of synchronized principle 1. Introduction to synchronized in concurrent programs, this keyword may be the m…… -
Java object oriented Foundation
Object oriented has always been a very popular idea. Its essence lies in its three characteristics: encapsulation, inh…… -
LinkedList source code analysis
LinkedList source code analysis 1. Structure 1. Succession this class inherits from abstractsequentiallist because i…… -
JavaIO
1. Byte stream and character stream There are two data transmission formats in io, one is character stream and the oth…… -
HashMap source code analysis
HashMap source code analysis 1. Structure 1. Succession this class inherits from abstractmap, which is similar to Ar…… -
TCP details
1. Introduction we all know that TCP is a protocol located in the transport layer. He also has a brother, UDP, which…… -
Java multithreading JUC
1. Volatile keyword During multi-threaded access, a serious problem is that the memory is invisible. In fact, during m…… -
Java container
The container collection interface defines methods to access a set of objects, Its sub interfaces set and list respect…… -
An overview of the collections collection.
Preface I feel very confused when I suddenly encounter the interview questions about sets, so I specially summarize so…… -
HashSet source code details
Preface After writing the HashMap article, it took several days to continue this series of articles. Because there are…… -
Java Web (XIII) send mail using JavaMail (QQ, 163, Sina mailbox server)
Come on, come on. --WZY 1、 Principle of sending mail Before you know how it w…… -
Detailed explanation of internal classes of Java
Preface A little classmate asked me to write a summary of this. I said, well, let's write and summarize the knowledge …… -
Realization of paging function of Java Web (11)
Although there are many easy-to-use frameworks to support paging, and it is very simple to make the paging effect, wha…… -
Java Web (III) session mechanism, cookie and session details
Most of them should know what the conversational mechanism is and can say a few words. I also know a little about it. …… -
Detailed explanation of reflection mechanism in Java
Preface When learning the basics of Java, I didn't think it was useful because I didn't learn well and didn't speak pr…… -
Hashcode details
Preface I wrote this article because I encountered some hashcode values when reading the HashMap source code, and then…… -
Java Web (IX) user management system
I learned a lot about JSPS, servlets, JSTL, El, etc. most of them are dead things. As long as I can understand its syn…… -
LinkedHashMap source code details
Preface I didn't intend to talk about map first, but with the understanding of set set, I found that if I don't unders…… -
Java Web (VI) el expression
This is also the knowledge within the scope of JSP. Using El expressions can make better use of various built-in objec…… -
Java Web (XIV) write a summary of mybookstore project
The reason why I haven't posted a blog these days is that I'm writing a small project of the book city as the final pr…… -
Detailed explanation of Java Web (V) JSP (four scopes, nine built-in objects, etc.)
We explained the servlet earlier, learned about the inheritance structure and life cycle of the servlet, and learned m…… -
Java Web (XII) Commons fileUpload upload and download
I have a normal mind today... keep trying.. --WZY 1、 Upload principle and…… -
The insert method of mybatis plus has the problem of – ID ‘doesn’t have a default value
If this problem occurs, just set the corresponding field annotation to, for example: This error can be solved. -
Java Web (VII) JSTL tag library
Previously, we learned that in order not to use scripts on JSP pages, we have built-in behaviors and behaviors in JSP,…… -
Code implementation of Java Web (IV) one-time verification code
In fact, the logic of the implementation code is very simple, really super simple. 1. Log in on the login page JSP use…… -
Java Web (I) servlet details!!
This article is a little far from the last one. It's been about two months. I spent a year at home. Ha ha ~ now start …… -
Summary of vector and stack source code analysis / list collection
Preface This article is the last one of the collections under the list interface. The ArrayList and LinkedList have be…… -
JDBC of Java ①
JDBC tool preparation: MySQL (database), MyEclipse (development tool), Navicat (database management tool) JDBC program…… -
The problem of outline in the development integration tool MyEclipse
Preface If you don't understand, the more you check, the more ignorant you will become. The more you find the existenc……