Recent Posts
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Does clang / libclang have a Java binding?
I want to use clang's code analysis function in the plug-in of Java based ide Since plug-ins must be written in Java, …… -
Java – how to process servlet requests during long shutdown periods
We need to implement an elegant shutdown mechanism in servlet applications Editor: we want to simplify as much as poss…… -
Cubic B-spline curve in Java
I need to use cubic B - spline, but I can't find its code anywhere The only curves available in the Java API are quadc…… -
Java – the correct way to calculate associated objects using jpql
What is the correct way to write this JPA query? I'm just guessing because I can't solve it or find it in my JPA book …… -
Java – attempt to refresh the ‘expired’ keystore
I'm trying to re sign some jars using the ant task 'signjar', but it tells me that "the signer's certificate has expir…… -
Java EE – which CDI scope should I use for Dao and service classes
I'm trying to build applications using JPA, CDI (open web beans delta spike JPA module), and JSF I use CDI deployed on…… -
The java web framework is similar to the ruby on rails paradigm
In your opinion, what is the Java Web Framework closest to or similar to the ruby on rails paradigm (such as conventio…… -
Java – when does the main thread die?
The problem is to use threads to generate random numbers between 1 and 99 But the problem here is that I don't know wh…… -
Variable structure in vector
I'm trying to create a vector to track enemies in games that will have a bunch of variable structures I have a world s…… -
How do I organize my java GUI?
I'm creating a game in Java for fun, and I'm trying to decide how to organize my classes for the GUI So far, all class…… -
Java – how to write a probabilistic algorithm that can be easily maintained?
Suppose I want to create a game At the beginning of the game, the player will choose a monster It's easy to choose mon…… -
Java – JFrame: get the actual content size
I've created a JFrame, and trying to get its size will produce incorrect results compared to what I expected I've made…… -
Multithreading – can I generate a thread from a servlet?
Before turning to my main question, I'd like to ask a basic question Let's say I'm running a simple java program that …… -
Java – simple file upload cannot be implemented in Jersey – “use post to annotate resources. Classes are not considered valid resource methods. Unavailable”
You can't use Jersey to upload simple files Missing dependency error raised during application boot: The following err…… -
Java – pass custom environment variables to Maven
I'm looking for a way to pass environment variables to cargo containers Something like this: <plugin> <grou…… -
Java – accessing nested JSON data in a single get?
I tried to get a value from the JSON object How do I get the third level JSON object: JSON format is as follows: FeedS…… -
Java Swing Mac OSX Preferences menu
I'm trying to add the Preferences menu to my java swing application, which proves a little disgusting I've read a lot …… -
Use java to read files from the serial port
I'm a beginner in Java. I'm writing ("flash") GetBytes () like this to serialport Before I put flash_ After OK as a re…… -
Java server faces: validate only in the business logic layer
I have a java server faces web application and I'm not sure how to handle validation In my opinion, validation should …… -
Prime factorization of Java display numbers
Therefore, for my task, I must write a program that requires the user to input an integer, and then print out the prim…… -
Java – activate SQL statements using hibernate and spring data JPA
I have a spring data JPA repository that uses hibernate as a provider I want to record SQL statements, but I can't I'v…… -
How to use the system Use multiple scanner objects on in?
What is the correct way to use multiple scanner objects in my program For example, I use a scanner to read a file, and…… -
Java – how to ignore attributes with null values during deserialization from JSON
I am trying to deserialize a JSON string into a concurrenthashmap object, and I receive an error because my JSON conta…… -
Java – libgdx: how to animate on an isometric tile map?
I have some questions about libgdx and Pingpu map I can use isometric tiled maprenderer as a renderer and orthographic…… -
Java – add jdbc driver to classpath
OK, I set up my Maven correctly on win vista_ HOME,JAVA_ HOME. But I don't have a course path yet I also installed mys…… -
Java scriptengine: use values on the Java side?
In the Java program, I am calling a user-defined JavaScript program: File userJSFile=...; javax.script.ScriptEngineMan…… -
Java – exception thrown when connecting to JMX server in spring!
So when I try to connect to JMX from jconsole, I get this exception: Caused by: java.rmi.ConnectException: Connection …… -
Java – create Maven project, unable to parse prototype, reject connection
I suspect I have Maven agency problems When I create a new project: 1) File – > New – > Maven project 2) I choos…… -
Spring batch differences between multithreading and partitioning
I can't understand the difference between multithreading and partitioning in spring batch processing The implementatio…… -
Fonts – extract geometry from font
I want to be able to extract the geometry of each letter in the TrueType font file Each letter has a set of coordinate…… -
Java – Concurrent HashMap: check size
Concurrent HashMap can solve the synchronization problem seen in HashMap Therefore, if we work with a synchronization …… -
Java – exact sum of long arrays
To get the exact sum of long [], I am using the following code snippet public static BigInteger sum(long[] a) { lo……