Recent Posts
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Java – how to implement switch / if else if statements in spring webflow?
The following switch statement has been implemented If there are any errors, would you please verify and correct them?…… -
Java – spring data: JPA schema jparepositoryconfigdefinitionparser initialization failed
I'm trying to set up a project about spring data, but I encountered a strange error like this: Handle problems with pr…… -
Java: AES encryption using CTR mode; Unable to decrypt
I'm using the following code, but it doesn't decrypt the text correctly. What I get is output Encryption:% no2f? ¢¶SHº…… -
Java – ArrayList of arrays, how to make the size of the last array different from other arrays in the list
Explain what I want to achieve: I get a file. I have to read data from the file and create a block with a size of 1 KB…… -
When specifying types, javac “uses unchecked or unsafe operations”
The following codes: public void addGrillaListener(Stage stageToClose,Grilla listener) { GrillaHandler<WindowEv…… -
Java – why does my if conditional compare string fail?
This program execution does not enter the if condition public static void filterObject(ArrayList<treewalker.Variabl…… -
How to put JButton on jlabel?
I am using the NetBeans ide to create applications in Java swing In my application, I put multiple jinternalframes on …… -
Java – convert resource / stream to file
How can I do this? File myFile = getFile(this.getClass.getResourceAsStream("test.txt")) or File myFile = getFile(this.…… -
Run java code after method returns?
I have a web service based on Java classes Whether the code can be run after the confirmation message is returned in t…… -
Java – a non recursive method for calculating a binary tree representing an arithmetic expression
As mentioned in the topic, I need to describe a method for evaluating binary arithmetic expression trees without recur…… -
Database – when using JPA, avoid stale data from DB?
The problem I encountered is similar to that described in the invaliding JPA entitymanager session: Problem: getting s…… -
Java listen button and keyboard click
How to press the key and trigger JButton? For example: I use "a" JButton as the GUI on the panel I implemented a butto…… -
Java – how to wrap Google Guice’s injector method?
I'm writing an API that uses Guice for all di and want to hide all Guice "content" of API developers I have the follow…… -
Java – OK Which jar in class comes from the eclipse ide
I'm debugging something in the Maven project in Eclipse IDE. As usual, when I enter the line (F5), I reach a Java clas…… -
Java – use JAXB to create reference objects based on attributes
Consider the following XML: <Config> <Paths> <Path reference="WS_License"/> </Pat…… -
Java – please explain why 24,16,8 is used to convert ints to bytes?
The following code is to convert int to bytes array private static byte[] intToBytes(int i) // split integer i into …… -
Java – three parameter operators: local variables may not have been initialized
I have the following code import java.util.Random; public class ThreeArgumentOperator { private static final Ran…… -
Java – BigDecimal and BigInteger and BigDecimal performance
I'm discussing whether to use BigDecimal and BigInteger or just BigDecimal to make my life easier and less back and fo…… -
Retrieving information from LDAP (Java)
I'm trying to retrieve data from the LDAP server, but it failed (connection works) It's hard for me to understand what…… -
Java – need ideas on how to insert small text phrases on the panel
I tried to insert the "puzzle game" text circled in red in the attached image I have put all four blue buttons and tex…… -
Can Java be unstable and ensure visibility?
public class Stuff { public class Stuff { private final Timer timer = new Timer(true); public static final int DEF…… -
Java – Maven build failed with an error: the artifact could not be found in the specified path – the path is slightly incorrect
Run this command: mvn package -Pcdh4 This is an error in Maven: [ERROR] Failed to execute goal on project hdfs-nfs-pro…… -
Java – get the correct conversion object from HashMap
I am developing an application with multiple systems (in my example, the system is a loadable component in my applicat…… -
Java – how do I know at run time if a jar file already exists in the classpath?
If a particular jar file is already in my classpath, what is the best way to know at run time? If this is not the case…… -
Java – creates an ArrayList on each index of the list
I have a list like this public List<String>[] Depth_List; Now in each index of this list, I want to create and A…… -
Writing XML documents from Java – simple
I know there are many problems in writing XML from Java on stack overflow, but it is too complex I think I have a very…… -
Java – XML unmarshalling using JAXB with namespace and schema
I have an XML document as follows: <?xml version="1.0" encoding="UTF-8"?> <xs:msgdata xmlns:xs="http://www.my…… -
Java – designed for multithreaded rest API clients
I am developing a program that receives a search request for a topic, calls the New York Times API to get articles rel…… -
Java – Method Android OOP cannot be reused
In my application, I cannot reuse the methods I declare in the arabictutility class My intention is to use the Arabic …… -
Java – Apache FOP and Arial fonts
My XSL style uses Arial font <fo:block font-family="Arial" font-size="8pt" font-weight="normal"> Configuration f…… -
Java – unmarshalling with multiple namespaces
So, suppose I have several namespaces of XML <Envelope xmlns:pdi="http://www.mypage.com/schemas/pdi" xmlns:ib="http……