Recent Posts
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Servlet based execution principle and life cycle (comprehensive analysis)
1、 Let's start with the servlet container: the most familiar servlet container is Tomcat. How does the servlet contai…… -
Java generates a jar package and a single process running instance
Java file package jar run Effective steps: 1. CMD to the current directory (for example, the directory where the defau…… -
Detailed summary of Java Network IO programming (bio, NiO and AIO all contain complete example codes)
This article will introduce the traditional bio to NiO and then to AIO from shallow to deep, and attach a complete cod…… -
Introduction to XPath in Java programming
1、 Use Dom4j to support XPath operations - an element can be directly obtained without layer by layer parsing How to …… -
Detailed explanation of integrated configuration of spring web MVC and Hibernate
There are many articles about the integration of spring and hibernate on the Internet. However, because those articles…… -
Java implementation extracts non duplicate integer instances
Title Description Enter an int integer and return a new integer without duplicate numbers in the reading order from ri…… -
Example of connecting database and fuzzy query function realized by Java
This paper describes the connection database and fuzzy query function realized by Java. Share with you for your refere…… -
Spring oxm getting started instance
What is an O / xmapper? Spring3. A new feature of 0 is O / xmapper. The concept of O / X mapper is not new. O represen…… -
Spring oxm getting started instance
What is an O / xmapper? Spring3. A new feature of 0 is O / xmapper. The concept of O / X mapper is not new. O represen…… -
Efficiency comparison of five methods of splicing strings in Java
preface Recently, I wrote something. I may consider string splicing and think of several methods, but I don't know the…… -
Android ADT offline download steps
Android ADT offline download steps Many online Android ide eclipse development environment tutorials, ADT installation…… -
Android adds a prompt for the number of unread messages to the icon of the application (the number in the red circle)
Recently, we are working on a function to view unread messages. We need to add a function to prompt unread messages in…… -
Solve the problem of blank space on the left of custom toolbar and action bar after Android v7
As shown in the figure: 1. View the parent topic of the widget.appcompat.toolbar as follows: The attribute contentinse…… -
Two ways for rxjava to implement three-level cache in Android
As mentioned in the title of this article, rxjava is used to realize the three-level cache of data, namely memory, dis…… -
Android uses shared preferences to store passwords and remember passwords in the login interface
There are many storage methods for Android. The storage method used here is SharedPreferences, which uses the map data…… -
Detailed explanation of example of Android intent sending broadcast message
Android intent sends broadcast messages Another purpose of intent is to send broadcast messages. Both applications and…… -
Android sets EditText to get focus and pop up the soft keyboard
Android sets EditText to get focus and pop up the soft keyboard PS: enter EditText on the Android page to automaticall…… -
Alertdialog in Android does not close the dialog box after clicking the button
The problem here: when I click the OK button, that is, the positive button in the alertdialog, we need to judge whethe…… -
Implementation of displaying SQLite query results in listview
1. Get DB instance @ h_ 419_ 4@ 2. Get query structure @ h from cursor object_ 419_ 4@ 3. New simplecursoradapter obje…… -
Android determines whether the current language environment is Chinese
If you don't have much to say, please see the code: PS: Android determines what language the current system uses Judge…… -
Printing example of Android Bluetooth connected ESC / POS thermal printer (Bluetooth connection)
A mobile CRM project of the company recently needs to add the function of small ticket printing, which is the kind of …… -
Android implements unread corner marks on the desktop
Display the number (number of unread messages) on the icon of Xiaomi Samsung Sony mobile phone: this part of the code …… -
Red dot display of Android unread messages
In many apps, you often see small red dots of unread messages, as shown in the following figure: This function uses a …… -
Android realizes user-defined curve chart of price trend
This article refers to the linechart of the open source chart library framework mpadroidchart Address: https://github.…… -
Android Gaode map positioning SDK integration and map function implementation
1： Baidu Gaode official website, and then create an application website: http://lbs.amap.com/ 1. Find the console and…… -
Creation method of Android custom control
This article shares the specific code for Android to create custom controls for your reference. The specific contents …… -
Android imitation function button floatingactionbutton effect
Some time ago, I was watching attribute animation. It happened that the effect of this button can be realized by attri…… -
Android Gaode map POI retrieval imitation wechat sending location example code
Recently, the project needs to change the sending location module into an effect similar to that of wechat sending loc…… -
Detailed explanation of using AspectJ in Android
What is AOP AOP is the abbreviation of aspect oriented programming, that is, "aspect oriented programming". It is diff…… -
Android determines whether the user has allowed the camera permission instance code
For example, since it is to judge whether the user has allowed the camera permission, we will ignore the problem of ma…… -
Simple implementation method of Android local verification code (preventing violent login)
0. Preface The verification code is everywhere. Someone asked me, do you know what is under the Da Vinci password? Yes…… -
Android devices do not recognize the awk command. What if busybox is missing
Android device does not recognize awk command, missing busy@R_ 693_ 2419@ 1、 What is Busy@R_ 693_ 2419@ ？ Busy@R_ 69……