Recent Posts
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Java – remove duplicate code
I'm creating a small function programming library for Java (just to scratch my own itch) When defining high order func…… -
Java – xmleventwriter: how can I tell it to write empty elements?
I'm in javax xml. stream. Xmleventwriter or javax xml. stream. There is no option in xmloutputfactory. You can set a m…… -
What is the difference between a Java compile time library and a runtime library?
What is the use of professionals? I'm actually in NetBeans' Project Properties > java application library We have t…… -
java – Kryo crash EnvironmentFailureException
I tried to serialize some custom class objects, and I got the following exception: com.esotericsoftware.kryo.KryoExcep…… -
Java – should I use drools in this case?
I will use the university library system to explain my use cases Students register in the library system and provide t…… -
Java – Delphi concurrent memory model?
Is there anything like Java Memory Model in Delphi? To prevent misunderstanding: I mean nothing like "big / big / smal…… -
What happens when a subclass does not define a constructor in Java?
I have a few things I want to know First, if you don't have a constructor: class NoCons { int x; } When I do the new n…… -
java. Lang. linkageerror: Loader constraint violation in Grails project
I have built a Grails project with POI (including POI - 3.7 and poi - OOXML - 3.7) I've been working on the buildconfi…… -
Why does my algorithm become faster after executing several times? (JAVA)
I have a Sudoku solution algorithm, and my goal is to do it as soon as possible To test the algorithm, I run it severa…… -
Java – how to serialize the last class that cannot be serialized by a third party (such as Google’s latlng class)?
I use Google's latlng class in V2 Google play service That particular class is final and does not implement Java io. S…… -
Java – parsing JSON using gson, objects sometimes contain lists and sometimes objects
I'm using an API that sometimes contains a list of child objects: { 'obj' : { children: [ {id: "1"},{id: "2"} ] } } I …… -
Concurrent use of Java util. Random contention
Oracle Java documentation says: Could it be the reason for poor performance? Solution Internally, Java util. Random ke…… -
How to use java code to configure logback and set the log level?
I want to use the default slf4j logback configuration, except for org springframework. data. document. The logging lev…… -
When inserting in a loop, javax persistence. TransactionRequiredException
I have an application using spring, hibernate and JTA We received a request that exceeded the expected data (10000 ele…… -
Java – how to serialize the last class that cannot be serialized by a third party (such as Google’s latlng class)?
I use Google's latlng class in V2 Google play service That particular class is final and does not implement Java io. S…… -
Java – read the incoming Certificate in Tomcat
I use Tomcat HTTP connector to authenticate with clients If the client starts a new connection to my server and sends …… -
Java – jsch – invalid private key
I am running JDK 1.7 & Windows 7 using NetBeans 7.2 JSch jsch = new JSch(); Session session = null; try { j…… -
Java – replace ‘continue’ keyword [closed]
I was browsing the question about the continue keyword to better understand it. I came across this line in this answer…… -
Java class type
I have a piece of valid code. I want to ask what happened? Class<?> normalFormClass = null; – - add – – The wild…… -
How do I build Java typed objects at runtime from generic type definitions and runtime type parameters?
Assume universal type declaration (Java) class Foo<T> { public T bar; } At runtime, how do I instantiate a t…… -
Java – parsing anonymous classes does not implement abstract methods
I'm trying to retrieve objects from parse cloud storage from button click events in my main activity, which is from pa…… -
Exception in thread “main” Java security. Invalidkeyexception: illegal key size or default parameter
The following code throws this error message: Exception in thread "main" Java security. Invalidkeyexception: illegal k…… -
For Java artifact repositories such as nexus or artifact, are there any Net alternative? Where do you store the version of DLL?
Where are the binaries required for automatic build on team system? You need to be able to recover earlier versions of…… -
What is the equivalent “nth_element” function in Java?
I don't want to get a sorted array, just the value of the nth element For example, given an array a = [20,5,1,-3] I wa…… -
Java – does my server use both TCP and UDP?
I'm writing a client / server application. I really can't find a guide that meets my needs Doing my own business will …… -
Java – use Apache commons math to determine confidence intervals
I have a set of benchmark data. I use Apache math commons to calculate summary statistics Now I want to use the packag…… -
Java – text aligned in jlabel
See English answer > align text in jlabel to the right2 Solution Several jlabel constructors take horizontal alignm…… -
java. math. How does roundingmode work?
I'm having trouble rounding Specifically, after reading all the JavaDocs, I look forward to the following code: int n …… -
How to write a collection for unordered pairs in Java
I need a set (HashSet) so that if I insert a pair (a, b) and if (B, a) is already in the set, the insertion will be ig…… -
Java – add a gridbaglayout in actionlistener
I have a jmenuitem with an actionlistener. In this actionlistener, I want to add a gridbaglayout to my framework (I ma…… -
comet – socket. IO and Net socket server
Sorry, if this question sounds stupid, but I have to ask it Node written in c# Is there a server-side alternative to J…… -
Javafx-2 – JavaFX full screen – resizing elements based on screen size
Is there a way to make the full screen (resize if possible) instead of rearranging everything (in fact, it is rearrang……