Recent Posts
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Select a Java Web Framework 2011
My question is based on the following question: choosing a java web framework now? The reason for my problem is that a…… -
Write 3D games in Java
Hi, I started learning java this summer because I like creating games very much I managed to master the Java se core. …… -
Java – how to find the parent JSON node when parsing JSON
I'm using Jackson to parse JSON streams The API I'm using is objectmapper readTree(..) Consider the following flows: {…… -
Java – realm: change the name of the migrated field
I want to change the field name during the real DB migration Is it correct? It takes a lot of time The following code …… -
Java – nginx with Tomcat configuration
I'm new to nginx. I need your help, According to many forums, I learned that all our static pages are stored in nginx …… -
Java – unable to connect to host 127.0 on port 7055 after 45000 Ms 0.1. Use FF version 26.0 and selenium independent tank 2.39
I am trying to connect to my AWS UNIX machine. Selenium 2.30 with FF version 26.0 is installed, but when I start the c…… -
Servlets – use javax with compojure servlet. Filter
I'm trying to build a simple web site using clojure / compojure and want to apply servlet filters to requests / respon…… -
Java toString for debugging or practical logical purposes
This may be a very basic question. If you have raised this question, please apologize The reason I asked is that I hav…… -
Java – problems received in rxtx
I've been using rxtx for about a year without too many problems I just started a new program to interact with a new ha…… -
Java optimizer and redundant array evaluation
This is a very basic problem about Java optimization If you have a simple for loop, iterate over the array and use arr…… -
Simple java pyramid – using system out. Printf() format output
Objectives: I am trying to generate a pyramid similar to the format given below This requires a basic Java program tha…… -
Java – read and write files that contain UTF – 8 (different language) characters
I have a file, It contains the following characters: “Joh 1：1ஆதியிலேஆதியிலே்த்தைதை்தது,அந்ததவாரதததைதைதைதைதைதைதைதேவனிட…… -
Why is BigInteger in java designed to be immutable?
In Java, BigInteger is immutable, but I want to understand why, because it is often used to do many calculations that …… -
Java – classpath problem using xpathfactory
I encountered the following exception on one of the real-time servers (other servers running the same code seem to hav…… -
Java EE – why are stateless beans considered pseudo scopes and cannot have circular dependencies?
Using wildfly 8.1, I have several beans, and I try to inject several EJBs into each other It can be said that I have t…… -
Java: the reference to static context is similar to class self reference ‘this’, which is often used as the coding style
As mentioned in Python, I have been using class self - reference since the recent beginning of Java, whether it is man…… -
Java – log4j2: the location where the log4jcontextselector system property is set for asynchronous logging
I tried to set asynchronous logging in the rest web method currently running in the free profile server (for performan…… -
Java – Liferay API / jsonws page can only be accessed by administrator users
Anyone can tell me how to restrict ordinary users from accessing Liferay API / jsonws pages The API / jsonws page can …… -
Java – Mac hosts do not like docker container port forwarding
This is my first attempt to use docker. I'm trying to make a @ L_ 404_ 0 @ boot web application runs in docker contain…… -
Java – using AOP XML loading time weaving in AspectJ
According to my understanding, in order to use AOP XML file for load time weaving, it must be placed in meta - inf Is …… -
Java – how to copy / pass webdriver instances, is it dangerous?
I've been working on a team that has developed selenium webdriver infrastructure for several months, and the way we ac…… -
Java – how to prevent eclipse from breaking on each exception caught when running in debugging
When I started debugging a java project, eclipse continued to break random exceptions in third-party libraries, which …… -
java – identity. Viewexpiredexception after logout(); In JBoss seam
After my authenticationfilter redirects to the login page, I want to exit to the user That's why I put identity logout…… -
Java – where is the Apache hive jdbc driver for download?
I need to connect to hive. Com from a java program via JDBC However, I can't find the jdbc driver itself (jar file) an…… -
Java – intercept exceptions
I want to use custom exceptions so that a user - friendly message appears when any sort exception occurs What is the d…… -
Java – get the first 10 values in the hash map
I tried to figure out how to get the top 10 values from HashMap I initially tried to use treemap and sort by value, an…… -
Java – share links – perform operations in the background
I have an application that will accept the URL from the built-in web browser through the "shared page" menu item. I'm …… -
What kind of Java syntax is “= = null? False: true;”
I'm looking at the code and wondering what this means: Boolean foo = request.getParameter("foo") == null? false:true; …… -
Java – explains the behavior of automatically incrementing a composite ID sequence using hibernate mapping
I have a table CREATE TABLE `SomeEntity` ( `id` int(11) NOT NULL AUTO_INCREMENT,`subid` int(11) NOT NULL DEFAULT …… -
Java – why does the scheduleatfixedrate – schedulewithfixeddelay method not use callable
I'm doing some experiments on Java 8 concurrency In the scheduledthreadpoolexecutor API I can see the following two si…… -
Java – why is “. Concat (string)” much faster than “”?
See the English answer > string concatenation: concat() vs "+" operator11 for(int i = 0; i < 100000000L; i++) { …… -
Java webdriver: element invisible exception
I have the following questions I have a hidden drop-down list, so when I make a selection and run the test, I get the ……