Java
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Java – find and replace elements in a linked list
I need to be able to search for some unique elements (user name, password, email) in the link list. After finding thes…… -
Java – how to merge grid cells in GXT
I wonder if I can merge cells in the GXT grid like this: I think I have to overwrite the renderer, but I can't find on…… -
Java – should the entitymanager of JPA be requestscoped?
I am using JBoss 7 to develop web applications based on Java EE 6 class ForumServiceEJB { @PersistenceContext(type…… -
How to maintain the folder structure when compressing in Java?
I want to compress a folder with a structure like this: Temperature / folder 1 / file1 Temperature / Folder 2 / File2 …… -
Why does adding a kernel after about 10 kernels slow down my java program?
My program uses fork / join to run thousands of tasks as follows: private static class Generator extends RecursiveTask…… -
Java – read the EXIF data of the image in the BlackBerry
How to use code to read EXIF data of image in BlackBerry device I used exifinterface.com in Android Does the BlackBerr…… -
How to combine images without loading them into RAM in Java
I have a very large image (around a gigapixel) that I want to generate. So far, I can only create an image of about 40…… -
Java – how do I evaluate expressions in this tree?
The following is an example of the parsed XML file I'm using, which marks it as a tree commandList assign varia…… -
Java – lock free protection for synchronous acquisition / release
I have a shared temporary file resource, divided into 4K blocks (or some such value) Each 4K in the file is represente…… -
Java – include dependencies in Maven assemblies instead of actual artifacts
I want to create a maven assembly that contains the delivery dependencies of the artifact, not the artifact itself I t…… -
Java – how to save a complete web page
Is there any way to save a complete web page using webdriver? At present, I do getpagesource (), and then put all the …… -
Java – add custom information to the jbehave HTML report
When generating the report, jbehave will automatically put the story content into the report, and assertion failure ma…… -
Java – security role ref does not work properly
These are my web XML content <?xml version="1.0" encoding="ISO-8859-1"?> <web-app xmlns="http://java.sun.com/…… -
How to use JSF component library in OSGi
I have a very specific question about using JSF and component libraries I tested building a WAB (OSG - Fixed war) pack…… -
Java – authentication via Servlet
My situation is as follows: I run two web applications on Tomcat Initially, the user logs in to application 1 and then…… -
Java – try to convert PDF to text with fonts
I'm trying to read PDF files and store text in text files But in doing so, I also want to store font information at th…… -
Gson is required to return Java jsonarray
I can't return jsonarray, but my object seems to be a string The value of myArray is the same as that of jsonstring Th…… -
Hibernate clear method: empty cache
clear() Example Session session = sessionFactory.openSession(); //定义Session UserForm uf = new UserForm(); //定…… -
Struts2 ActionContext. Getapplication () method: get the application object of map type
public Map getApplication() Example Typical application Info value in the request range: Info value in the session ran…… -
Spring drivermanagerdatasource class: Drive Manager data source
Grammar 1 DriverManagerDataSource() Example DriverManagerDataSource driverManagerDataSource = new DriverManagerDataS…… -
Spring getconnectionproperties method: get database connection properties
getConnectionProperties() Example public static void main(String[] args){ String driver = "com.MysqL.jdbc.Driver"…… -
Java RandomAccessFile class: dynamic reading of file contents
Example 1 public class RandomAccessFileDemo { public static void main(String[] args) { try { …… -
Implementation of java example air ticket discount in low and peak seasons
Use if else statement to realize air ticket discount in low and peak seasons public static void main(String[] args) …… -
Java interface: definition and implementation of interface, definition and implementation of interface
Define interface public interface A { publicA(){…} // 编译出错，接口不允许定义构造方法 } public interface…… -
Spring batchupdate method: execute batch update statement
batchUpdate(String[] sql) Example public static void main(String[] args){ ApplicationContext context = new ClassP…… -
JSP Request. Getsession () method: get the session object related to the request
getSession(boolean create) Example <% HttpSession ses = request.getSession(true); out.println("客户端sessio…… -
JSP JSTL < x: param > tag: define parameters
parameter value Example <%@taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml"%> <%@taglib…… -
JSP JSTL < SQL: setdatasource > tag: set data source
Example 1 <%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%> 连接Sql Server 2000数据库 &…… -
JSP header object: get a specific header value of HTTP request
${header.expression} Example ${header.host} ${header[host]} -
Hibernate hibernate. transaction. factory_ Class attribute: sets the transaction management type
hibernate. transaction. factory_ Class = attribute value Example <property name="hibernate.transaction.factory_cl…… -
Struts2 ActionContext. Getcontext () method: get actioncontext object
public static ActionContext getContext() Example //获取ActionContext对象 ActionContext context = ActionContext.getC…… -
Hibernate between method: set the condition between the two
between(String propertyName,Object lo,Object hi) Example Criteria criteria = session.createCriteria(UserForm.class);……