Recent Posts
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NetBeans (Java Swing): setting the window size
It really drives me crazy When I set the appropriate size for my window in design mode, it just ignores this size and …… -
Random chaos probability in Java (or any language)
See English answers > what distribution do you get from this broken random shuffle? 10 for(int i = 0; i < N; i++…… -
If the variable modified by the thread is marked volatile, why false sharing problem
I've been reading Martin Thompson's article This is an explanation of false sharing http://mechanical-sympathy.blogspo…… -
Java – can I dynamically load other spring configuration files into an existing web application context?
In Tomcat 6.0 After starting my webapp in 18, I just use what is needed to initialize the system to boot spring - that…… -
Java 8 interface with default method invalid method when Jacobo is enabled
We have an interface that uses default methods. We implement this interface in Java and kotlin classes, and we provide…… -
Java – mockito. In easymock What is the analogy of spy / doreturn?
Imagine that I have the following courses: public class TestClass { public class Index<X> { } publi…… -
Java – where can I find Proguard. Java in my project cfg？
I want to enable Proguard for my application in this document @ L_ 301_ 0 @, it says that the Proguard that I have to …… -
How to set the default gateway, IP address and subnet mask from Java?
I'm looking for some ways to configure my Ethernet card from Java There is no way to change the default gateway, IP ad…… -
Java – Google fit API to get the calories consumed by each activity
So I'm trying to create an app that connects to Google fit and displays their data to users in a very compact way, and…… -
Potential problems with one of Oracle’s Java generics
I'm reviewing a Java generic Oracle path called "effects of type error and bridge methods", and I can't convince mysel…… -
Java – jodatime string yyyy mm ddthh: MMSs Z to datetime
Hi, I'm using joda time to convert my string date to a datetime object I currently have the following string: 2014-02-…… -
RX Java – chain can be completed to observable stream
Suppose you want to insert a complete in the observable chain. For example, for each issued element, there is a runnab…… -
Java – what is the difference between Maven archetype mojo and Maven archetype plugin?
Run the output fragment a.txt of the command MVN archetype: generate > 332: remote -> org.apache.maven.archetype…… -
Are there two identical keywords in Java?
Because we use the "default" keyword as an access specifier, and it can be used in switch statements for completely di…… -
ORM’s fuelphp update resulted in “rather than” sporadic “
I am using PHP 5.4 And I got very strange behavior using the fuelphp ORM save and update function I'm trying to save s…… -
Java – Jenkins build blocked “option Code: 65002”
My Jenkins can't build our project. This is the log: Jenkins is fully up and running déc. 02,2014 12:34:35 PM Infos hu…… -
Why are there so many versions of Java that are different from c#?
I decided to learn another language and was in the picking stage At present, we are studying Java and C #, but because…… -
Drag multiple button views in Java
I have an application where I need a button to move the stack (like moving part of a pile of cards from one pile to an…… -
Java – set httpparams object in httpclient 4.0
I'm creating a new httpclient by passing threadsafeclientconnmanager and httpparams in its constructor, but it always …… -
Unexpected sequence error in Java compilation
When solving challenges online, I found the following behavior of Java, which I found a little strange I started with …… -
Java – stay away from children: protected fields cannot be deleted from inheritance
In the spirit of well - designed OO, a category I have extended has marked that one of these areas has been protected …… -
Java – how to create acceptance tests for asynchronous microservices
If I have a microservice, it should create users. However, because user creation is very complex, it uses queues. User…… -
Java – it is better to have a caching mechanism inside or outside the factory class?
My problem is not strictly language - related, it's more like a general programming concept If I have a factory class …… -
Java collationkey sorting error
I'm having trouble comparing strings I want to compare two French texts such as "é D" and "EF" Collator localeSpecific…… -
Java – the title of the Google bottomnavigationview project disappears after several quick tabs
activity_ main. In XML: <android.support.design.widget.BottomNavigationView android:id="@+id/bottom_navigation"…… -
Android – lists the ADB devices on the network
$adb usb restarting in USB mode $adb devices List of devices attached ######## device $adb tcpip 5555 restarting i…… -
Android – can I create widgets like Google play music on the lock screen?
private void lockScreenControls() { // Use the media button APIs (if available) to register ourselves for med…… -
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 – 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 do WhatsApp and instant messaging applications run in the background without persistent notifications in Oreo?
What did I learn from stack overflow and Android documentation Unable to create background service for continuous task…… -
Equivalent to computeifabsent in Java 7
Is there any way to run a piece of code only when there is no key in the concurrenthashmap and save the results of the…… -
Java – why do fuzzy errors occur when using varargs overloads of primitive types and wrapper classes?
See English answers > ambiguous varargs methods4 Case 1 public class Test { public void display(int a) { ……