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Java tutorial

Example of java implementing socket to continuously obtain messages from the server

We use software simulation on the server side. It is a very small software. Download the software NetAssist: http://xiazai.VeVB.COm/201403/tools/NetAssist(VeVB.COm).rar. The second step is to paste our client code: Copy the code code as follows: im

2025-01-13
WebDriver realizes automatic opening of Google web pages in IE and realizes search

WebDriver can automatically open the Google web page in IE and perform searches. You need to import the WebDriver related jar package and set the environment variables. Copy the code as follows: package com.feng.domain; import org.openqa.seleni

2025-01-13
Example of converting java integer (seconds) to hours, minutes and seconds format

Convert integer (number of seconds) to hours, minutes and seconds format (xx:xx:xx). Copy the code. The code is as follows: // a integer to xx:xx:xxpublic static String secToTime(int time) {String timeStr = null

2025-01-13
Java implementation example of Xiaoi robot api interface calling

Copy the code as follows: package com.weixin.util;import java.io.IOException;import java.util.Random;import org.apache.commons.codec.bina

2025-01-13
Example of echarts chart export to excel

The corresponding graphic copy code is generated according to the parameters passed in. The code is as follows: loadChart: function(data,item){var that = this;require(['echarts', 'echarts/chart/bar', 'echarts

2025-01-13
2 examples of Java for-each loop usage problems (advanced usage)

In Java, the for-each loop simplifies the traversal process of any Collection or array, but not every Java programmer knows some of the details of the for-each loop that will be described in this article. Unlike other terms released in Java 5: release ali

2025-01-13
Java implementation of web page parsing example

Just paste the URL in the brackets on the ninth line to copy the code. The code is as follows: package com.meession.test;import java.io.DataInputStream;import java.net.URL;public class Inter

2025-01-13
Java uses the method of calculating md5 check code to compare whether two files are the same

Copy the code as follows: public class MD5Check {/*** The default password string combination is used to convert bytes into hexadecimal characters. Apache uses this default combination to verify the correctness of downloaded files. */protected char hexDig

2025-01-13
Sharing experience on Java sorting implementation

1. Overview Sorting and searching are two very basic problems in programming, and there are many classic algorithms used to solve these two types of problems. This article mainly conducts a basic discussion on the implementation of sorting algorithms in J

2025-01-13
jfinal adds jcaptcha verification code implementation method

Copy the code as follows: package com.g.core.common.JCaptcha;import java.awt.Color;import java.awt.Font;import com.octo.captcha.component

2025-01-13
Obtain lrc lyrics sample sharing from Qianqianjingting Lyrics Server

$name is the output song name. Copy the code as follows:

2025-01-13
JAVA implements caesar Caesar encryption algorithm

Copy the code as follows: public class Caesar {public static final String SOURCE = "abcdefghijklmnopqrstuvwxyz"; public static final int L

2025-01-13
Java uses randomaccessfile to write data anywhere in the file

Copy the code as follows: import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;i

2025-01-13
Java design pattern singleton pattern learning

1 Overview The singleton pattern has several benefits: (1) Certain classes are created more frequently, which is a large system overhead for some large objects. (2) The new operator is omitted, which reduces the frequency of system memory usage and reduce

2025-01-13
Java design pattern builder pattern learning

1 Overview The Builder Pattern (Builder Pattern) is mainly used to "build a complex object step by step", in which "step by step" is a stable algorithm, while the various parts of the complex object change frequently. Therefore, the bu

2025-01-13

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