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1, Introduction of containers and generics No matter what language it is, it is necessary to deal with data in the process of developing programs. In order to better accommodate these data, we introduced the concept of array in the previous study, which is indeed a good way to accommodate data, but ar ...

Preface Recently, because of the company's needs, we need to understand the java probe, find information on the Internet, and find a lot of data, but there are too few examples. Some of them paste the company code directly, which is too complex, and some of them are particularly simple, which is not what I want. I want an example like this: The ...

NO.1 foundation drawing Zero etching🔗 HenCoder Preface Get the xp value corresponding to dp public static float dp2px(int dp){ return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,dp, Resources.getSystem().getDisplayMetrics()); } Rotation direction Path.Direction.CW; //Clock ...

Yesterday, there was a demand for Chinese word frequency statistics. After Baidu's visit, it found a lot of party articles with titles, which were seriously inconsistent with the content. Here is a simple record of its own implementation process!   Different from the word frequency statistics of English words, the difficulty of Chinese lies i ...

JavaScript dynamically gets server time Many Java Web applications need to obtain server time dynamically, such as the company's attendance system, ticket booking system and so on. The renderings are as follows: How to achieve it? Preparation Eclipse creates a new Dynamic Web Project, in this case, ShowTime Remember to ...

Example of scala accessing MySQL database: import java.sql.{Connection,ResultSet,DriverManager} import scala.util.control.Exception.Catch //import java.sql.DriverManager object DataAnalysisTest { def main(args: Array[String]): Unit = { if(args.length!=3) { println("Parameter error!") println("usage metho ...

(1) Introduction PDF is used in many operating platforms with high quality and is ideal for archiving and sharing useful information.This next article describes adding, extracting, deleting, and replacing pictures in PDF documents using Java.The article is roughly structured as follows: Add Pictures to PDF Extract pictures from PDF Replace ...

Since 2018, we have been accumulating server related technologies. In the company, from a client programmer, he actively requests to do server tasks, hoping to take the opportunity to improve his application ability of server technology. In private, we have been studying the related technologies of vert.x. however, the company uses php + yii so ...

This document will use the JD cloud AI SDK to practice the face search function in face recognition, mainly involving group creation / deletion, group list acquisition, face creation / deletion, and face search. The final effect of this operation is: create a face database, take a picture to search the most similar one in the face database, a ...

Client is the basic class WebSocketClientTest is the main method entry. maven address, other packages may need to be screenshots, etc. <dependency> <groupId>org.java-websocket</groupId> <artifactId>Java-WebSocket</artifactId> <version>1.3.0</version> &l ...