Recent Posts
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Example of status pop-up and disappearance of Android soft keyboard
Recently, I encountered a problem about the soft keyboard. I need to get the status of the soft keyboard, whether it i…… -
About stretching of user-defined camera preview interface in Android
About stretching the user-defined camera preview interface 1. The main reason for the deformation is that the rotation…… -
Android implements ImageView shadow and layer effects
This example shares the implementation code of ImageView shadow and layer effect for your reference. The specific cont…… -
Detailed introduction of scheduled task taskscheduler in spring
@H_ 502_ 2 @ Preface As we all know, after spring version 3.0, it comes with a timed task tool, which is simple and co…… -
Android imitation wechat chat time format display function
This article shares Android's imitation wechat chat time format display function. Display rules in the same year: If i…… -
Usage example of JTable renderer and editor in Java Swing
This article describes the usage of JTable renderer and editor in Java swing. Share with you for your reference, as fo…… -
Java reflection easy tutorial
About java reflection, we need to understand the following questions: What is reflection? What's the use of reflection…… -
How to use Java API
What is a Java class library When writing programs, there are usually many functions that are general or very basic. T…… -
Detailed introduction to synchronization and asynchrony in Java
Process synchronization is used to achieve the reproducibility of program concurrent execution. 1、 Concepts of proces…… -
Java spring development environment construction and simple introductory example tutorial
This article describes the construction of Java spring development environment and a simple entry example. Share with …… -
Java NiO instance UDP sending and receiving data code sharing
In the NiO package of Java, there is a class dedicated to sending UDP packets: datagramchannel. UDP is a connectionles…… -
Javamybatis mapping attribute, detailed explanation of advanced mapping
SQL attribute of mapping file: ID: identifier (usually Dao layer method name) Resulttype: SQL return type Resultmap: m…… -
Java Web applications use stream limiting to handle a large number of concurrent requests
In web applications, a large number of client requests are sent to the server at the same time, such as rush purchase,…… -
Detailed explanation of the method of implementing custom cascading in spring data mongodb
preface The spring data mongodb project provides integration with mongodb document database. When spring integrates wi…… -
Java swing component file selector Jfilechooser simple usage example
This article describes the simple usage of Java swing component file selector Jfilechooser. Share with you for your re…… -
Java implementation of a simple web crawler code example
At present, Python is the most popular crawler in the market. After a brief understanding, I think that some simple pa…… -
Detailed explanation of the usage of instanceof in Java and what does instanceof mean (recommended)
OK, at your request, let's first tell you what instanceof means in Java programs Instanceof is a binary operator of Ja…… -
On uploading pictures and using request Getinputstream() problem encountered while getting file stream
The image upload function is often used in our web, and there are many ways to obtain it. Here I use request Getinputs…… -
Java programming exception simple code example
Exercise 1 Write a method void triangle (int a, int b, int c) to judge whether the three parameters can form a triangl…… -
Code example of inheritance problem in Java programming
Classroom exercises: C in package bzu Aadefine a vehicle class in: 1. Attribute - capacity 2. Method (1) Parameterless…… -
What kind of Java exceptions inherit, and the difference between runtime exceptions and general exceptions (detailed explanation)
1、 Basic concepts Throwable is the root of all exceptions, Java lang.Throwable Error is an error, Java lang.Error Exc…… -
How to use rxjava function operators
Rxjava function is very easy to use. Some operators inside are very convenient. Rxjava includes: observed, observer, s…… -
Based on the functions and dependencies of various jar packages in spring (detailed explanation)
The download link of jar package of each version of spring is attached first http://repo.spring.io/release/org/springf…… -
Detailed explanation of thread synchronization synchronized and volatile of Java threads
In the previous part, a simple example was given to illustrate thread safety and insecurity. In the case of insecurity…… -
Three methods of obtaining keyboard input values in Java
In the process of program development, it is common to obtain input values from the keyboard, but Java has no ready-ma…… -
Explain in detail how to deploy spring boot project with Jenkins
Jenkins is a Devops artifact. This article describes how to install and use Jenkins to deploy the spring boot project …… -
Java Swing implements a method example to center the form
This example describes the method of Java swing to center the form. Share with you for your reference, as follows: Swi…… -
A note on the use of stream in Java 8
Introduction to stream Let's take a look at how stream is defined in Java: A sequence of elements supporting sequentia…… -
Concurrent container based on copyonwritearraylist (example explanation)
Copyonwritearraylist concurrency container Copy on write, referred to as cow, is an optimization strategy used in prog…… -
Java escape analysis and code examples
Concept introduction We all know that objects created in Java are allocated to heap memory, but the fact is not so abs…… -
Comments on spring
We might as well classify the annotations commonly used in spring according to their functions 1. Add ordinary classes…… -
Simple usage example analysis of Java swing component setbounds()
This article describes the simple usage of Java swing component setbounds(). Share with you for your reference, as fol……