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Java tutorial

Set code formatting, comment templates and automatic formatting when saving in Myeclipse

1: Set the comment template: Download this template: codetemplates.xml, search for Dangzhang, change it to your own name, save it, open eclipse/myeclipse, select window-->Preferences-->java-->Code-->Cod

2025-01-15
Java basics java tool class for processing IP

Java tool class for processing IP, including converting long type IP to general IP type, converting xx.xx.xx.xx type to long type, obtaining mask based on mask bits, and calculating IP based on ip/mask bits Methods such as the starting IP of the segment a

2025-01-15
Java implements dual daemon process under Linux

1. Introduction Many of today's server-side programs are developed based on Java, targeting Socket programs developed in Java. If such a server-side problem occurs after it goes online, it needs to be restarted manually. If it hangs up in the middle o

2025-01-15
Java Basics: How to Learn Java Well

Java is a platform. I just want to talk about my views on learning Java well. I hope it will be helpful to beginners. 1. Before you think about learning Java, don’t be impatient, calm down and think carefully: 1) Are you interested in learning Java? 2) Ca

2025-01-15
Learn JAVA variable parameters from scratch

The following is a simple small program: copy the code as follows: import java.util.Arrays; class lesson6 {public static void main(String[] args) {int array[]={2,3,1,5

2025-01-15
JavaEE implements request redirection through response

Request redirection means that after a web resource receives a client request, it notifies the client to access another web resource. This is called request redirection. The 302 status code and location header can be used to implement redirection. The mos

2025-01-15
Summary about ServletConfig in JavaEE

In the Servlet configuration file, you can use one or more<init-param> The tag configures some initialization parameters for the servlet. When the servlet is configured with initialization parameters, the web container will automatically encapsulate these

2025-01-15
JavaEE implementation file download

Let’s first look at the simplest example of file downloading: copy the code as follows: package com.yyz.response;import java.io.FileInputStream;import java.io.IOException;import ja

2025-01-15
Analysis on the problem of using response to output garbled Chinese data to the client in JavaEE

When the web server receives the client's http request, it will create a request object representing the request and a response object representing the response for each request. Since the request and response objects represent requests and responses,

2025-01-15
Java background calls the HttpURLConnection class to simulate browser request instances (can be used for interface calls)

Generally, it is inevitable to encounter calls to external interfaces during project development. This article describes the method of calling the HttpURLConnection class in the java background to simulate browser requests. Can be used for interface calls

2025-01-15
Summary of the Chinese garbled problem of submitting data in form in java using post and get methods

1: The form submits data in the foreground in post mode: When the browser sends the data (assumed to be "China") to the server, it must look up the code table when turning the data into binary data of 0101 (assumed to be 98 99). Which code table

2025-01-15
Summary of common request methods in java

The HttpServletRequest object represents the client's request. When the client accesses the server through the HTTP protocol, all the information in the HTTP request header is encapsulated in this object. Developers can obtain the client's informa

2025-01-15
Shiro configuration method based on Spring framework

1. Add shiro filter in web.xml<filter><filter-name> shiroFilter</filter-name><filter-class> org.springframewor

2025-01-15
Example of join method of Java Thread

This article describes the join method of Thread in Java. Share it with everyone for your reference. The specific implementation method is as follows: join public final void join() throws InterruptedException and wait for the thread to terminate. Throws:

2025-01-15
Analysis of the differences between several jar packages when connecting to sqlserver database using Java

I saw someone asking this question in the group today, so let me share my knowledge with you. Of course, there may be something wrong. I hope to point out: ***msbase.jar, mssqlserver.jar , msutil.jar (supports sql2000): early connection database J

2025-01-15

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