Java
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Java – jsplitpane: is there any way to show / hide one of the panes?
I have a jsplitpane with two components a and B, but sometimes I want to be able to hide B to meet any of the followin…… -
Java – Android – why is using interfaces considered a best practice for communicating between activities and fragments?
In this document "communicating with other fragments", Google tells us that the best practice for transmitting activit…… -
Java – how to avoid concurrentmodificationexception when iterating over this collection?
I need to iterate over a series of projects & sometimes added to the collection at the same time However, if I add…… -
Array – how to use data Vector. Generic. Mutable?
How to sort long list data (string, floating point, etc.) read from large files Solution In general, how is this done …… -
Error converting date in Java
String date = jsonobject.getString("needbydate"); String date = jsonobject.getString("needbydate"); DateFormat df = ne…… -
Java – Dbunit does not clean up and insert the database after each method, so the test is not independent
I have a Dao class test. I use Dbunit to create and populate the database (using Derby in memory) This is the code (Te…… -
Java – Maven: the jar will be empty – nothing is marked as contained
I have a little problem with Maven When I run the command MVN package, I get the following warning: [warning] jar will…… -
Java – NetBeans keep transferring Maven repository indexes, even if I have disabled it
Although I have set index update frequency to never: NetBeans often try to transfer Maven repository indexes, which co…… -
Java – in SpriteBatch Nested shaperenders in begin / end begin / end
Whether shaperender can be used to draw shapes between the start and end calls of SpriteBatch I tried, but there was n…… -
Java – why are short primitive types significantly slower than long or int?
I try to optimize the RAM usage of Android games by changing the int primitive to short Before I did this, I was inter…… -
JavaFX menu items display shortcuts on the right
Take the menu item in the edit menu in JavaFX scene builder as an example See how they display the shortcut on the rig…… -
Java – how to include JSP files from different projects in my project
How do I include JSP files from different projects in my project? <%@ include file="./common/webappfooter.jsp"%>…… -
Java – how to declare the return type of a method as the return type of the last lambda in the array passed to the method
I ask for something that I think is impossible. If so, I will delete the problem I have ways: public Object convertBy(…… -
Java – is it safe to lock multiple reentrantreadwritelocks in the same try block?
Suppose I have two key resources, Foo and bar I protected them with some reentrantreadwritelock reentrantreadwritelock…… -
Java – how to use mockmvc to pass the @ requestbody parameter of the controller
Parameters with @ requestparam annotation can use: Post ("/ **********************************************************…… -
Java – primefaces UI: duplicate does not work
I'm trying to create an accordionpanel in primefaces I'm trying to create it using the UI: repeat, so I can create pan…… -
Java – use MapReduce to find the average of numbers
I've been trying to write some code to find the average of numbers using MapReduce I try to use global counters to ach…… -
Java – sliding into simpletarget does not comply with the specified width and height
I'm using glide to load the image, resize it, and save it to a file via simpletarget < bitmap > These images wil…… -
Java – ActiveMQ: dead letter queue keeps my message order
I use ActiveMQ as a proxy to deliver messages These messages are written in dabatase Sometimes, the database cannot be…… -
JavaFX displays properties in controls
I am completing the JavaFX tutorial for Oracle myself After years of rocking (a long time ago), I was fascinated by ne…… -
How to use Xdebug and eclipse IDE for PHP
Hello, my PHP project is set up on the remote test machine I need to use the eclipse IDE for debugging How can I impro…… -
How does Java – callable work under the hood? How do callable objects return values?
I'm trying to understand how callable returns a value when running on another thread I'm looking at the classes execut…… -
Java lower bound wildcard
I'm trying to solve this problem and wonder if anyone can explain it I have three classes of staff, people and angels …… -
Java – how to write cron jobs in play framework 2.3
I'm using play 2.3 8 (activator) & mongodb is DB I have some products in the product series. Each product has a va…… -
Java – fragment variable ondestroy ()
There is already an answer to this question: > ondestroy() – to set or not to set instance variables to null? one S…… -
java – android. view. Inflateexception: binary XML file line #9: error class expansion
I've been studying this problem for hours and similar errors, and the solution doesn't do that I reuse this XML file i…… -
C-std:: remove in STD:: vector_ if polymorphic std :: unique_ ptr
I have a three - level hierarchy, derived from optional and paintable derivatives Then I have a vector unique_ PTR <…… -
Java – how do I specify the name of a resource annotation at compile time?
Our code has this: @Resource(name = "java:comp/resource/foo/bar/ONE_QUEUE") private Queue queue; However, in a deploym…… -
Java – how to configure a single threaded forkjoinpool?
Can forkjoinpool be configured to use 1 execution thread? I am executing code that calls Random in ForkJoinPool. Every…… -
How to add mouselistener to a frame
I want to add a mouselistener to the MT JFrame framework, but when I execute frame When addMouseListener (this), I get…… -
Java – breaks a paragraph into a single sentence Am I covering all the bases here?
I'm trying to split a string containing multiple sentences into a string array of single sentences This is what I have…… -
Java – Apache POI removes cellstyle from the workbook
Using Apache poi... I used workbook Createcellstyle(), if I need to delete the created cellstyle after a period of tim……