Java
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Java – deserialization version conflict
My question is, what is a good way to upgrade obsolete objects? For example, suppose you have a class like this: publi…… -
JavaFX – use FX: ID as CSS ID in fxml
It seems that if no ID (CSS) is specified in F XML, the FX: ID value is used by default My previous understanding is t…… -
How to modify the month value of dateformatsymbols
I'm trying to add a specific month name for a specific locale For example, the code is generated in January, February,…… -
Java – drawerlayout on the actionbar
When using drawer layout, is there any way to overlay the drawer view on the operation bar? I don't want to hide the a…… -
Java – how is it possible to use @ retention annotation recursively?
In the source code of @ retention annotation in Java, @ retention is used in its definition, which is possible Even re…… -
Java – how to build a basic terminal from scratch
I have checked some suggestions or instructions including stack overflow online, but anything I find is overwhelming. …… -
How to delete “is” from a Boolean getter generated by JAXB
JAXB is generating the following methods: Many class methods are generated, so it is not feasible to customize the gen…… -
java – Random. Problems with nextgaussian()
Random. Nextgaussian () should give a random number no.s, with a mean of 0 and an STD deviation of 1.0 Solution A Gaus…… -
Java – regular expressions ignore new lines and match only the entire large string?
I have this string here: CREATE UNIQUE INDEX index555 ON SOME_TABLE ( SOME_PK ASC ); I want to match mult…… -
Java 9 multi module Maven project test dependencies
I have a multi module Maven project, which contains three modules: core, utils and test utils The core has the followi…… -
Java – rotate the matrix into position
I'm solving the problem of rotating NxN matrix It seems that my code is rotating, but it leaves an X on the image. So …… -
Java – when to use akka microkernel?
I'm reading the akka document and I'm curious that some things haven't been well explained Their mention is called akk…… -
Add Java 9 system module and compile in eclipse
I have some legacy java code, namely: package org.alo.test.j9; import javax.activation.DataHandler; // in java.activ…… -
Java – hibernate only updates some fields
In some cases, I want to update only one column, but I don't want to get the object from the database. I only have its…… -
How to run programs in Java forever? System. in. Is read () the only way?
I took this Code: 28 public static void main(String[] args) throws IOException { 29 HttpServer httpServer…… -
Java – why do most web hosting services only support PHP as a server-side language?
I've been using Java and python, so I found a good web host that supports these But my question is, why can you find s…… -
Java – spring boot: handle multiple requests at the same time
I use spring boot to build a restful web service My IDE is eclipse oxygen I send HTTP get requests every 2 seconds thr…… -
Java – preload WebView in activity a and pass it to activity B to speed up loading
In one of my applications, I use WebView to load the page. The scenario is that I have activity a and activity B. acti…… -
Java – why math Pow (long, (1 / 3)) always returns 1?
If the problem is power, how to write it correctly? Solution Try math Pow (long, 1D / 3) By default, numeric text in J…… -
Does Java – dynatrace have a similar open source framework?
I like the dynatrace tool and wonder if there are any open source alternatives to this library Solution APDEX -
Threadsafe singleton has no Java synchronization?
I have a multithreaded application and a singleton class: public final class Singleton { private static MyClass m…… -
Java – classnotfound error when running storm starter topology in local mode (win10, OS X)
I tried to debug storm topology (on storm V 1.0.0) under windows in the following ways: TopologyBuilder builder = new …… -
Java – libgdx changes the color of the texture at run time
In a game made with libgdx, I have a textureatlas in which I store all textureregions for player animation By default,…… -
Java – how to correctly delete ajaxselfupdatingtimerbehavior from components in Apache wicket?
I had trouble adding and removing ajaxselfupdating timerbehavior in Apache wicket The behavior is added, but once I de…… -
Java – securitymanager for cloud service “sandbox”
All, I am designing a cloud based service that will provide the option to execute some "plug-in" code submitted by cus…… -
Autocomplete using Emacs 24 does not apply to Java, C, or C mode
I used marmalade buy back to install autocomplete Everything was installed correctly, and after moving something, I ma…… -
Java strange allocation rules
short s = 'a'; // valid short s = 'a'; // valid Short ss = 'a'; // valid int i = 'a'; // vali…… -
Java – TDOA calculation error
I have to calculate the total flight time between the departure airport and the arrival airport This is done by the fo…… -
Java – Tomcat 6 does not load jars from WEB-INF / lib
I'm trying to track configuration issues in my Tomcat environment Our production server is running a Tomcat installati…… -
Java – default value of local variable?
See the English answer > default values of instance variables and local variables Who can explain? Solution Local v…… -
Java download manager
I need to get several huge files (several performances) from Java via FTP / HTTP Is there a ready-made Library (Java /…… -
Java – determines which aspects are hooked to a given class
Is it possible to determine which aspects hook to a given class and gain access to its instances? It's like: Foo foo =……