Java
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Java – how does undertow do non blocking IO?
I use undertow to create a simple application public class App { public static void main(String[] args) { …… -
Multithreading – many threads or as few threads as possible?
As a side project, I'm writing a server for an old game I've played I try to make servers as loosely coupled as possib…… -
Java – how do I set the application icon for a libgdx desktop application?
I'm trying to set an application icon from a - Desktop specific class: package org.osgameseed.games.animalflip; impor…… -
Java – is try / catch a resource consuming operation?
I've heard that it's more reasonable to return null in a method instead of throwing exceptions in a try / catch block …… -
Java gets a collection of common types
There is already an answer to this question: > get generic type of Java util. List12 if(originalField.getGenericTyp…… -
Java – set custom key when pushing new data to firebase database
Well, I'm a newcomer to firebase. I want to have my own key and push new data to the database at the same time Questio…… -
Java – copy clipboard manager that supports old and new versions?
I'm trying to edit text on Android. For another question, the most voting answer provides these lines, but when I use …… -
Java – what is the difference between creating unbounded and bounded arrays of wildcard types?
Why is this code valid ArrayList<?>[] arr = new ArrayList<?>[2]; But the following two are not? ArrayList&…… -
Java implements compressed string and Java string filtering
Topic 1: input a string of lowercase letters (a ~ z) through the keyboard. Please write a string filter program. If mu…… -
Generics of Java generics
I have a generic class that represents a piece of text The text fragment can have any of a variety of different modes …… -
Java imitation Windows calculator example
The interface of this calculator imitates the simple calculator provided by windows, including interactive interface a…… -
Adjust JPEGs to lose color in Java (try to use multiple libraries)
I have tried several image adjustment libraries published on so and raw Java using getscaleinstance Although everythin…… -
Use stringescapeutils. In commons lang3 Alternative to escape javascript()
My task is to convert our code from using org apache. commons. Lang update to org apache. commons. Lang3, I found that…… -
Increase BigInteger performance of Java
How to improve the large integer performance of Java? For example, this factional program: import java.math.*; class F…… -
Example of converting Java integers (seconds) to minutes and seconds format
Integer (seconds) converted to minute second format (XX: XX: XX) -
Celery flower as a daemon
I run celery with redis backend I know that flowers are tornado applications, so I should use a process to run the tor…… -
Java – why does the number class not have methods such as add () or close ()?
So this is a question about Java design Why Java There are no add () and negate () methods in the lang. number class, …… -
Java – a simulation method that uses jmock to type parameters
Background: This is a jmock JUnit specific problem (these are the two technologies I have to use) Yes, what I want to …… -
What is the use of lambda expressions, a new feature of Java 8 (usage examples)
We've been looking forward to lambda bringing the concept of closure to Java for a long time, but we lose a lot of val…… -
Add Java util. HashMap is converted to scala. XML in Java collection. immutable. Map
I used some Scala libraries from my java code I have a collection problem I need to pass Scala collection. immutable. …… -
Example of JSON data generated by Java
Online JSON code inspection, inspection, beautification and formatting tools: http://tools.jb51.net/code/json JSON onl…… -
Java – start a jar file like a service in Linux
I want to start and stop my jar file as follows Service myservice start Service myservice stopped My current jar file …… -
Java – selenium asynchronous script cannot be executed
Why do I get selenium 2.25 when I try to execute an asynchronous script Exception for 0 //navigate to my test page. S…… -
Java – how to determine if two circular sectors overlap each other
Each sector can be expressed as (x, y, R, a, d), where x, y is the position, R is the radius, D is the direction and a…… -
Java EE – run selenium test using Maven surefire plugin or Maven failsafe plugin?
I'm confused about the concept of using Maven surefire plugin or Maven failsafe plugin to run my selenium tests (not u…… -
Java simulates hibernate L1 cache example sharing
Pure java code simulates the principle of Hibernate L1 cache, which is simple and easy to understand. -
Java implementation server file package zip and download example (package and download)
Using this method, you can immediately package files and transfer them while packaging without using any cache, so tha…… -
Java – jlabel HTML text ignore SetFont
I've just started porting my swing application from OS X to windows, and jlabels is in pain I noticed that if the text…… -
Java – converts an integer to an equivalent number of spaces
I want to know that the easiest way is to convert an integer to an equivalent number of spaces When printing a binary …… -
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Java – iText – avoid the last line and don’t split the page to the next page
I'm using Java's iText 5 I have some pages with multiple tables with dynamic rows In some cases, the last row of the t…… -
Java – debug servletcontextlistener by setting breakpoints in eclipse contextDestroyed()
I implemented a custom servletcontextlistener and placed breakpoints on contextinitialized () and contextdestroyed () ……