Category "java"

Why Log4j2 Doesn't Log Before System.exit(1)

When I use System.exit(1) after logging an error via Log4j2, the system close but the log doesn't be written at log files. In normal situations without using Sy

How to change log level in quarkus application deployed on kubernetes

I have a quarkus application with a standard configuration. The application works as expected, in my local develop environment i'm able to set the log level by

ConcurrentModificationException with map of lists

public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); Scanne

BluetoothAdapter StartDiscovery does not work in Foreground Service

My application starts a service that detects phone shaking. When the service detects a shake, it searches for a BT device within range and if a suitable device

Java - Predicate to find Node with set value

I came upon object graphs while studying. And while they seem "cool" and useful, a related problem to the material made absolutely no sense to me. public class

Nested if statement is only executing first part

What I want my code to do I want my code to validate user input without using Regex or isDigit operators. If all the requirements of the if statements are found

Exception in thread "main" java.util.zip.ZipException: error in opening zip file When testing the application

In Android Studio the application was running on Real device, it was exported in ABK format .. But after a while, this error appears I read about gradle but did

Kotlin Android Studio: org.junit.ComparisonFailure with NBSP

I have this code @Test fun price_twelve_cupcakes() { val viewModel = OrderViewModel() viewModel.setQuantity(12) viewModel.price.observeForever {}

AfterDeleteEvent from AbstractMongoEventListener is not being triggered when entry is deleted from MongoDb

I have a class that extends AbstractMongoEventListener and overrides onAfterSave and onAfterDelete. The onAfterDelete does not trigger for some reason. The onAf

Unable to save an encrypted password with BCryptPassword in database

I am trying to save an encrypted password in postgreSQL database with BCrypt and I have an error. I saw the other answers on stackoverflow I tried to use those

JavaDoc: specify compatibility up to a specific version?

Similarly to how I can specify the minimum compatible Java version using the @since tag, I'd like to specify in my JavaDoc the maximum compatible version (e.i.

Failed to get correlation key for `citrus_message_correlator_HttpClient`

I have a CitrusEndpoints server configuration @Bean public HttpServer myService() { return CitrusEndpoints. http(). server().

Generating a random number that ends with a certain digit in Java

How does one generate a random number between 0 and 500 that ENDS WITH 5 in Java? I'm fairly new to programming.

Trying to save Night Mode State using Fragment

I am trying to enable Dark Night Mode in my App which is working though but when I restart the app it goes to again Light Mode basically I want to save Dark Nig

Why catch specific Java exceptions unless specific handling is needed?

Here is the code taken from https://dzone.com/articles/9-best-practices-to-handle-exceptions-in-java public void automaticallyCloseResource() { File file =

How to find the number of elements having the same CSS selector in selenium java?

I am using the latest version of selenium with java. I am trying to find the number of elements in a certain web page having the same css selector, but I don't

why nginx error 404 when downloading a file

When I try to download a file on a workbench with 3000+ records, a 404 nginx error crashes. When I try to download a file with fewer entries, everything is ok.

How to remove attribute from item in DynamoDB table?

I have an item whose particular attribute I want to remove using SDK 2.x from DynamoDB. How do I do this? I am using enhanced DynamoDB for table management. Her

Access GlusterFS file system in spring boot application

I am new to GlusterFS. After watching this video https://youtu.be/IGEtVYh0C2o , I have a big picture of how the GlusterFS servers are working. I understand a cl

GraalVM Native Image failing on Springdoc dependency

I am trying to create a sample application using spring boot and GraalVM Native Image, however as soon as I add the dependency for Springdoc the generated execu