包含标签：Java 的文章
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struts2_ Project operation report 404
1. Missing jar package, commons-lang3-3.2 jar Reference website: https://blog.csdn.net/u013457382/article/details/5097…… -
struts2_ HelloWorld
First struts 2 program - Hello 1. Create web project struts2-01-hello 2. Import the jar package into the bin d…… -
java_ generic paradigm
I Use of generic classes 1. Use generics when defining classes 2. be careful: 3. Code example -
Java_ Bubble sorting_ Principle and optimization
Bubble sorting and its optimization I Principle and optimization principle 1. Principle explanation Bubble sorting…… -
struts2_ Is struts 2 thread safe?
Thread safety: multiple threads execute concurrently in a process. During thread execution, the variable values are th…… -
JSTL_ Core tag library
I explain 2： Core tag library The core tag library provides the general functions required for JSP page programming. …… -
struts2_ Struts 2 basic configuration
Basic configuration 1. Create a new web project 2. Import the jar package. Download the jar package required by stru…… -
Java_ Properties
Java_ Properties class Differences between hashtable and HashMap HashMap thread is unsafe, asynchronous and efficient …… -
Solve org hibernate. HibernateException: identifier of an instance of com. ahd. entity. Order was altered from2 to 0
error message Causes: 1. eg. The type of ID in the mapping file is integer, that is, int, while the type o…… -
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Solve the problem of install new software in MyEclipse
Click Help in eclipse to directly find the install new software option to install plug-ins, but help does not have thi…… -
Solve org hibernate. exception. SQLGrammarException:could not insert
Today, I encountered this error when building a project using hibernate. I haven't found the reason for the error for …… -
Java Web Series: Fundamentals of Java Web projects
1. Java web module structure JSP files are similar to axpx files. Paths and URLs correspond to each other one by one a…… -
Basic use of Java enumeration classes
Enum type is a new feature in Java 5. It is a new type that allows constants to represent specific data fragments, and…… -
Java Web Series: JDBC Foundation
ADO. Net in Java is the enterprise library dataaccessapplicationblock module, the module in Java, and the orm of entit…… -
Java Web Series: JAAS authentication and authorization Foundation
1. Overview of certification and authorization (1) Authentication: authenticates the user's identity. . Net based RBS …… -
Detailed summary of transaction in Java
< H4 id = "1 what is a Java transaction" > < span style = "color: #3366ff;" > 1. What is a Java transactio…… -
JAVA Chinese garbled code
1. In MyEclipse, you can set the file encoding format, but when we use scanner to type, because Windows uses GBK encod…… -
Hibernate learning notes 2
Hibernate mapping One to many, one to one, many to many One to many mapping Common attributes of the set element …… -
Java copy, move, and delete files
< H2 id = "% E5% A4% 8D% E5% 88% B6% E6% 96% 87% E4% BB% B6% EF% BC% 9A" > copy file: < div class = "cnblogs_…… -
Write your own automatic code generation tool_ Java version_ Source download
That is, generate corresponding Dao, daoimpl, service, serviceimpl and other classes for each bean. The following is a…… -
My Notepad
I have spent near more two weeks to write this Notepad application. At this moment,I want to share with you. I wonder …… -
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Rookie growth
I suddenly found that yesterday (20-03-2016) was the fifth anniversary of my entering the circle. The time suddenly re…… -
Java’s POI technology to read and import Excel
< div class = "cnblogs_highlighter" > project structure: -
Query on “minimizing repeated calculation of variables in the for loop”
In the following article: Described in '': Operation effect: a. b. c. d. Summary: a lot of data has been tested, indic…… -
Java reflection – dry goods
After reading many articles on java reflection, I summarized what I saw. Help yourself and others more or less. First,…… -
Blog Garden_ Insert code (recommended)_ Button function realization_ Code highlights
Operation effect: : preparation 1. Download SyntaxHighlighter_ 1.5. 1.rar Download address: After decompression, D…… -
Urlrewriter in Java (URL rewriting)_ Source download
Recently, I used URL rewriting in a project. How to enhance the readability of the address in your website and let the…… -
Java POI technology to read Excel data to MySQL
This blog is to introduce the POI technology in Java, read Excel data, and then save it to MySQL data. You can also le…… -
java_ Free blocks (static and non static blocks)
There are two types of free blocks in Java: Static and non static blocks Static block: Non static block: Test Demo: Co……