Java
-
Java – Avro architecture does not respect backward compatibility
I have this Avro architecture { "namespace": "xx.xxxx.xxxxx.xxxxx","type": "record","name": "MyPayLoad","fields": [ …… -
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…… -
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 – Float. Equals is completely useless. What should I use?
in consideration of: > == should never be used to compare doubles/floats > it appears from the docs that (beyond…… -
Java – synchronization, volatile and thread safety
I'm reading some books about Java concurrency recently With regard to thread safety, if you cannot make a class immuta…… -
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 – 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 …… -
When programming with Java / kotlin, it is recommended to use tail recursive or iterative version? Is there any difference in performance?
I try to learn good habits in programming, and I stick to this problem I know that in Java, recursive functions can be…… -
Java – embedded jetty: select an existing spring MVC controller
context I work on a web application (using the play framework), and I'm trying to migrate to the traditional servlet m…… -
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 – 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 EE – was remote container and arquillian on @ persistencecontext
For our integration testing, I want to use arquillian and follow all the steps in the "Getting Started tutorial" Becau…… -
Why Java util. The value of the calendar object will change after calling get (int)
I try to debug problems in some legacy code. I have narrowed the problem down to the following methods: public String …… -
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 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…… -
Can I use azure table storage for conditional insertion
Can I use windows azure table storage service for conditional insertion? Basically, what I want to do is insert new ro…… -
Multithreading – how to execute QObject:: movetothread() when qthreadpool is used?
I'm building a small multithreaded web server Qtcpsockets are obtained in the main thread, and then passed to qtthread…… -
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 – 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 – how to correctly use JTI to declare JWT to prevent replay attacks?
I created some rest APIs using spring and implemented spring security using JWT for authentication My front end runs a…… -
Java – get screenshot of StartMenu
I'm using BitBlt to capture a window If aviation theme is enabled, the background of the captured image is black If I …… -
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 …… -
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…… -
Enumerations disassembled with javap do not display constructor parameters
When I disassemble enumeration with javap, the implicit constructor parameter of enumeration seems to be missing. I ca…… -
Java – how to format strings using properties in beans
I want to create a string using the format and replace some tags in the format with properties in the bean Is there a …… -
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 …… -
Develop and test the hybrid Google openid OAuth using openid4java on localhost
I'm trying to implement a hybrid Google openid OAuth protocol to identify my users and access their Google calendar da…… -
In my java code, is the key sonarlint question s1166 a false positive?
SonarLint 1.0. 0 for eclipse marks a key problem in my code, and I can't understand why and how to solve it Is this re…… -
Java – override constructor
I'm very confused about overriding constructors The constructor can't be overridden is the result I got when I searche……