包含标签：Java 的文章
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NPM management command
We can easily download JS library and manage front-end projects through NPM. Node. JS the location of the NPM package …… -
Connect and operate SQL Server database with Java
First, we need to add the corresponding sqljdbc to the software used jar。 General process 1. Load JDBC Driver: Before…… -
Null or null value judgment processing – Java
1，错误用法一： if (name == "") { //do something } 2，错误用法二： if (name.equals("")) { //do something…… -
Summary of Java method for obtaining absolute path of Web project
@H_419_1@ 一、用Jsp获取 1、获取文件的绝对路径 String file="文件";（例如：data.mdb） String path=application.getRea…… -
Eclipse best font recommendation / and font setting method
Follow the path below to open the edit box Steps: Eclipse - > windows - > Preferences - > General - > appe…… -
Summary of Java method for obtaining absolute path of Web project
@H_419_1@ 一、用Jsp获取 1、获取文件的绝对路径 String file="文件";（例如：data.mdb） String path=application.getRea…… -
How to apply Java Web 3 1 + project version reduction and replacement of JDK and Tomcat
First: configure the running server of Eclipse: we configure Tomcat 7 version + jdk1 Version 7; Then add the previous …… -
A simple HTML tag marquee to realize dynamic scroll bar
catalogue Label effect Scroll bar code Detailed explanation of label properties Vertical rolling, horizontal rolling, …… -
Java operating Oracle database code case
catalogue 1. First create a student table in Oracle Database: 2. Add some data to the table 1. Add ojdbc6 Import jar i…… -
Setting, tuning and using eclipse (solving problems such as startup jam)
Eclipse tuning generally does not set up eclipse. When using eclipse, you will always feel that it is slow to start an…… -
How to enter the management page of Tomcat Manager / HTML configuration method
For security reasons, the Tomcat management background is closed by default. However, in order to facilitate managemen…… -
Sqlserver deadlock com microsoft. sqlserver. jdbc. SQLServerException: Transaction (Process ID 52) was deadlock
Java multithreading operates the SQLSERVER database and executes the update operation; report errors: First, check the…… -
Open eclipse and report an error version 1.7 0_ 80 of JVM is not suitable for this product
Error when opening eclipse After configuring the environment variables: check the Java version: the following is 1.8, …… -
Java operation access database usage method, case and required jar package [source code and jar package are downloaded at the end]
catalogue Write in front Database editing software MDB plus exe Differences in SQL query statements String to number S…… -
Java method for generating unique primary key UUID (UUID method)
In normal development, if there is no mechanism for the database to automatically generate ID, you can use the UUID pr…… -
Solution of Java automatically jumping to debug mode
When debugging web projects, eclipse will always automatically jump to the debug mode, and the port will be occupied b…… -
Developing simple Java Web Service under eclipse
Service part Create a new dynamic web project under eclipse Create a new service class in the project Write code for t…… -
The default eclipse project deployment path (. Metadata \. Plugins \ org. Eclipse. WST. Server. Core \ tmp0 \ wtpwebapps) is changed to its own Tomcat real path method
Configure eclipse development environment, JDK installation path and Tomcat installation path. Create a dynamic web pr…… -
Linux system management (11) — JDK installation and environment variable configuration under Linux
catalogue 1. Upload the downloaded JDK package to CentOS operating system via SSH 2. Unzip 3. Edit system environment …… -
The combox custom style in jQuery easyUI removes the blank of the drop-down box
Effect after adding: -
Deploying WebService services on Tomcat
catalogue 1. Add related reference package: 2. Configuration file: sun jaxws xml 3. Modify web XML configuration file …… -
Several methods of modifying database password with MySQL
The first way: The simplest method is to modify with the help of the third-party tool Navicat for MySQL, as follows: 1…… -
Eclipse startup error java was started but returned exit code = 13 solution
catalogue Errors are reported as follows: Problem causes and solutions: 1. The installed version of eclipse is inconsi…… -
How to recover the java file code deleted by mistake in eclipse
Recovery of accidentally deleted files When writing code with eclipse, files or packages are sometimes deleted by mist…… -
Detailed explanation of judging string equality = = and equal in Java
① If we define two strings: String c="123"; String d="123"; System. out. println(c==d); At this time, the return value…… -
How can the Serialize () parameter and other parameters of the jQuery form be passed to the back end together
When the front end passes parameters to the back end, sometimes the form can be passed directly for convenience var fo…… -
Sleep () and thread. In the timeunit class sleep()
What is timeunit? Timeunit is Java util. A class under the concurrent package, timeunit, provides a better readable th…… -
java. util. concurrent. Future Basics
Hereby I am starting a series of articles about future concept in programming languages (also kNown as promises or del…… -
Set frame learning notes < 2 >
1. What is ArrayList ArrayList is a legendary dynamic array. In MSDN, it is a complex version of array. It provides th…… -
Introduction to JavaBean and simple examples
If you can't write JavaBeans, you're not a java developer. So, what is a JavaBean? JavaBeans are Java components that …… -
CentOS 7 installation and configuration MySQL
MySQL version introduction Quick install MySQL Uninstall MariaDB Query the MariaDB of CentOS 7: rpm -qa | grep mariadb…… -
[Java language] HashMap, HashSet, hashtable, vector, ArrayList
These commonly used but easily confused concepts are derived from Java Util package. This paper only makes a shallow a……