Java
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Java – disruptor – eventhandlers not called
I was playing with the disruptor framework and found that my event handler was not called This is my setup code: priva…… -
Java – get Google cloud storage files from blobkey
I wrote a Google App Engine application that uses blobstore to store data generated programmatically To this end, I us…… -
An invalid swing component height is required
The basic setting is as follows: I have a vertical jsplitpane. I want a fixed size bottom component and a resized top …… -
Java – FrameLayout foreground with selector
I have a FrameLayout. I want to apply the foreground drawable through the selector. I try to implement "drawselectoron…… -
Read comma separated attributes in Java using configuration2
I have this attribute: move.patternfile.include = *1a.txt,*2a.txt I'm trying to put it in the list using Apache Common…… -
Java – change the default jlabel font
How do I set the default font for all jlabel instances Instead of setting the font for each jlabel separately Solution…… -
Java Localtime parse exception
I have a piece of code that works normally and now somehow doesn't work I am reading a CSV file and an error occurred …… -
JBoss – jee6 rest service @ aroundinvoke interceptor is injecting an empty HttpServletRequest object
I have a @ aroundinvoke rest web service interceptor. I want to use it to record common data, such as classes and meth…… -
Java – declare and throw and throw without is declared exceptions
What is the difference between dual methods in Java? public void methodA() throws AnException { //do something …… -
Java assert double is Nan
I try to assert that my double is Nan private Double calculateIt(String input){...} assertEquals(Double.NaN,calculate…… -
Java – sort using spring AOP \ u0026 \ u0026 MVC
I am trying to use spring AOP and spring MVC controller @Aspect @Component public class LoggingAspect implements Order…… -
Java – why doesn’t this code see any significant performance improvement when using multiple threads on a quad core machine?
I wrote some java code to learn more about the executor framework Specifically, I wrote code to verify Collatz hypothe…… -
Java – use JSTL tag to escape JSP el (dot character)
Some frameworks (spring, Tomcat itself) add servlet request attributes that cannot be used in El expressions by defaul…… -
javax. Mail What should I do with the debug = true option?
In my javax mail. In the configuration property of session, I set mail Debug = true, but for some reason, this does no…… -
Java – how to avoid creating redundant entities?
In my current project, I need to execute some native queries. These queries select some fields from the tables connect…… -
Java – use the account manager to authenticate using the Google API
I've been trying to solve this problem for days I'm trying to dial Google calendar using authentication through Androi…… -
Controlling logging levels through the WebSphere administrative console
I have a web application in which I use Java util. logging. In my logging In the properties file, the default level is…… -
Java – JAXB: how to customize XML serialization of two fields
I have a legacy class with many public double fields Use double MAX_ Value initializes all double fields to indicate t…… -
PowerShell – hashtable and custom object array about iteration
I often write lists of things and enumerate them to perform some get / set I hate enumerating hash tables because when…… -
java – Arrays. Sort (object []) did not throw ClassCastException
Code: public class CompareTest { public static void main(String[] args) { ArrayList list = new ArrayLis…… -
How to run sudo command for OS X in Java
I'm using the app in JavaFX. I'm trying to open an application using the command in the terminal. I'm using my java co…… -
Java – what to use: executeupdate() or execute()?
Please tell me which two methods of executeupdate and execute are the values (?,?,?) of the inserted user (name, addr,…… -
Java – how to convert a character stream to a string stream pair?
I want to take a string and convert it into a word stream For example: I have: {"a", "apple", "B", "banana", "C", "car…… -
java – Spinner subitem
I want to populate the spinner with projects that contain main text and sub text, as Android studio shows when buildin…… -
Java – how to instantiate unit in scala?
All I want is to use some concurrent sets (they don't seem to exist at all) Java uses Java util. concurrent. Concurren…… -
Java. When creating a file using RandomAccessFile io. FileNotFoundException
When I tried to create a file using RandomAccessFile, I encountered FileNotFoundException: RandomAccessFile file = new…… -
Java – reformat code using regular expressions
We have an ArrayList of items in several classes. Every time I want to insert a new item in the list, it will cause me…… -
Java – default parameter in jar manifest
Is there any way to create a jar file that contains some parameters passed to the main class? (no need to add paramete…… -
Java – run each spring scheduler in its own thread
I have multiple components with @ scheduled annotation, and I find that spring starts only one at a time, even if they…… -
Java parseInt integrity check
I'm trying to parse an int from a string array element. Here's my code: String length = messageContents[k].replace("Co…… -
What are those Java threads that start with “pool”?
I have a problem with the Tomcat server that cannot be shut down normally I performed a thread dump after issuing the …… -
Java – how to capture TrayIcon Displaymessage() mouse click on the tooltip tone
Hi, I'm trying to show more details after the user clicks the mail balloon tooltip However, I can't find how to captur……