Recent Posts
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Java – if we have active MQ, why do we need mule?
I worked as a software engineer on a project using ActiveMQ and mule for Java messaging service But I have a question:…… -
The best way to wait in Java
I have an application that needs to wait for some time It must wait until the server fills in several data fields The …… -
Java – simpledateformat query
I have the following code snippet Date date=null; SimpleDateFormat sdf=new SimpleDateFormat("dd-MM-yyyy"); try…… -
Java – Hibernate: two onetomany attributes mapped by the same entity with different columns
I know this can be easily solved through HQL query, but I prefer hibernate to handle some onetomany attributes for me …… -
Boundaries in java games, how do “professionals” do this?
How do professionals make boundaries in 2D games? My way is to say that I don't want elves to enter an area: //Example…… -
Java – vaadin create modal dialog window
How to in vaadin 7 Create modal dialog window in X? I have found that I have a main window and added it to my new dial…… -
Java – ID generation of hibernate, liquibase and HSQLDB
I created a table with liquibase: <createTable tableName="employees"> <column name="id" type="bigint">…… -
Java – advantages of PBE over DES, 3DES and AES
In addition to DES, 3DES and AES encryption technology, I also implemented PBE Compared with the other three, I need s…… -
What is the difference between JPDA and JMX?
I'm trying to write an application monitoring tool, and I met two standards, JPDA and JMX They seem a bit like me Any …… -
Java – no class loaded Jdbc driver for forname
Oracle JDBC tutorial says But when I delete class Forname, it will give the error no driver found I am using the Ojdbc…… -
Play Framework 2.1(Java)eBean @Encrypted Annotation Errors
I'm trying to use the ebean @ encrypted annotation on the string field for the database model The document makes it lo…… -
Persistent blocking queue in Java?
TL; DR; I need to know if there is a lib with persistent blocking queues, which is a performance I have a classic prod…… -
Algorithm for calculating the path between two points in JPanel in Java Swing
First of all, I don't want an algorithm like a *, Dijkstra, because this algorithm can calculate the best and shortest…… -
java. util. Calendar WEEK_ OF_ Year provides 1 for 365 and 366 days
An attempt was made to find the week for the given date Question: December 29, 2012 = week 52 December 30, 2012 = week…… -
Java – how do I poll the FTP location to trigger changes in it?
I'm trying to poll FTP locations Solution I'm not sure how to achieve this goal in Jenkins If I'm just answering the m…… -
Setfocusable method or focusing components Java
I encountered this Code: public class Board extends JPanel implements ActionListener{ public Board(){ setFo…… -
Java – javax. net. ssl. Sslpeerunverifiedexception: peer is not authenticated
I am trying to connect to my own SSL server using my own SSL client, but I received the following error: javax. net. s…… -
Java – start Tomcat war
I installed Tomcat server on my computer I created a set of servlets in eclipse and exported them in war format When I…… -
Java – dynamically change the icon of a specific node in JTree
I've seen many examples of changing node icons during tree instantiation, but I want a way to dynamically change the i…… -
Java – sort a two-dimensional array based on a row of data
I'm not sure whether the title correctly indicates the question I want to ask Suppose I have a two-dimensional int arr…… -
Java JXL exception with largest row
I am creating an excel table from my vector, which contains 127923 records. When I try to enter records, I will encoun…… -
Java – can I expire all user sessions?
Can I expire all user sessions? I'm using tomcat, servlet / JSP In the session, I have a property userid On this basis…… -
A program that helps when rendering java code?
I attended a conference where a moderator showed some Java 8 code examples in an application. I was looking for the na…… -
Java – a try catch scenario – is it used correctly
I'm looking for a code base where the domain model consists of many nested member variables Consider this situation pr…… -
Java – how do I change the contents of the JScrollPane significantly each time I call the actionlistener?
Every time I call the action listener, I want the JScrollPane to change its list to a completely different list I'm no…… -
Java – camel CBR and POJO attribute check
I have a camel route for the order instance: from("direct:start") .choice() .when(order.getProduct() == Pr…… -
Java – eclipse supports refactoring
Can eclipse do this refactoring? Suppose I have a class with a list: class DomainObject { private List list; p…… -
Best practices for checking duplicate values in a database using java
I use @ column to set the unique constraint of the user name (unique = true) >By capturing the exception that the p…… -
WinForms ReportViewer pending application WPF
I've been having some problems with ReportViewer Basically, the code is as follows: public void Display(object dataSou…… -
Java – spring hibernate SQL Server connection failed
When I use the combination of spring, hibernate and SQL server, I receive the following error 19:17:09,137 ERROR [org.…… -
Java – get the value from JTable as an integer?
I don't understand; I am using defaulttablemodel. My attempt is to get the values in the table as ints: Integer.parseI…… -
Java – ant: what is the easiest way to add a version number to a build jar?
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?> <project name="myPlugin" ……