包含标签：Java 的文章
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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…… -
Java – Schrodinger error. Bufferedwriter will not write TXT unless checked manually
I'm a novice programmer - I can't find the answer to this question I have a problem with this part of the code: (file.…… -
Java standard for client / server communication
What is the "official" Java API for client / server or P2P communication? Java RMI？ Other network APIs?? Is this offi…… -
Handling large string lists in Java
I have a task that I have to pass billions of strings and check whether each is unique All lines themselves cannot be …… -
Unit of measure API in Java?
Jsr-275 has been rejected. The measurement of measurement API project for Java project is a set of interfaces, but the…… -
Java – use the builder in mapstruct (using the immutables annotation processor) to map objects to immutable objects
We use immutables framework to generate all DTOs Now we want to map these objects to another using mapstruct However, ……