Java
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Java_ IO stream_ abstract class
< p align = "left" > I concept III Character stream and byte stream and file 1. Byte stream Input stream Out…… -
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…… -
Java Web Series: JAAS authentication and authorization Foundation
1. Overview of certification and authorization (1) Authentication: authenticates the user's identity. . Net based RBS …… -
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…… -
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…… -
“Goto” — label in Java
There is no goto in Java, but goto is a reserved word. For example, int goto; It's illegal. However, there are tags in…… -
Complete expression of interface in Java
When I use a tool: Java decompiler decompiler to view the jar package source code, the following code appears: I searc…… -
Java POI technology, reading and writing excel [2003-2007, 2010]
In the previous blog: I introduced the related operations of reading excel with POI technology in Java Read excel and …… -
Programmers, let’s write the front-end code
You can think of me as an extreme person, just as many people focus on their own fields and disdain other "superficial…… -
Java API operation of Hadoop 2-hbase
HBase provides rich Java APIs and thread pool operations. Let me use thread pool to show how to use Java API to operat…… -
Java Web Development_ Realization of shopping cart function
I haven't touched the shopping cart before, and I don't know what to do with the shopping cart, so I queried a lot of …… -
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: