包含标签：Java 的文章
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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 – is the constructor of a private inner class also private?
I'm refactoring a growing Android project Running lint provides me with private member access between external and int…… -
Java – upgrade Jackson in GlassFish 4.1
I use GlassFish 4.1, including Jackson 2.3 two I want to upgrade to the latest version of Jackson (currently 2.4.4) Is…… -
Java – how mockito creates instances of mock objects
When I create a mock object of class employee It does not call the constructor of the employee object I know that inte…… -
Java – create JSF view / component tree from XHTML file
I need to access the JSF page component tree when the application starts I found this source on the Internet UIViewRoo…… -
Java – ehcache set to eternal but forget elements anyway?
I am trying to configure ehcache (version 2.5) so that it will never forget the project I'm configuring programmatical…… -
java – Createprocess error = 206; filename or extension is too long
See the English answer > CreateProcess error = 206, the filename or extension is too long when running main() metho…… -
Filesystems – what file system operations need to be atomic?
Are unlink, fsync, and rename the only atoms by definition? Edit: atom means that the operation is successful and effe…… -
How complex is the BigInteger operation in Java 7?
How complex, split and consumed are the methods in BigInteger at present? There is no mention of computational complex…… -
Why does Java claim to have two declared methods when it comes to bounded generics?
Has the following definitions: public interface BaseService<T,ID> { T findOne(ID id); } public class Base……