Category "java"

How large should my list of objects be to warrant the use of java 8's parallelStream?

I have a list of objects from the database and i want to filter this list using the filter() method of the Stream class. New objects will be added to the databa

Kafka authentication with Jaas config

I have set up my Kafka jaas config as an external bean in my spring boot application to read my configuration from my application.yaml file. But I am facing an

JavaFX: How to make a VBox and it's contents expand infinitely with window height like they do with width?

Probably a very simple question but I have not been able to figure it out. I have a ScrollPane (feat. Label) inside a VBox, inside a SplitPane: (Full fxml fil

How do I compare strings in Java?

I've been using the == operator in my program to compare all my strings so far. However, I ran into a bug, changed one of them into .equals()

How to build cordova project with Kotlin

I have a cordova project folder www already in progress. Build this and you will have an Android project. This will create a MainActivity.java file. I don't

Google play games pop up connection message not showing

Hello I have a game application that use Google play games services with the V2 Sdk, the problem is that the user is automatically connected through the games s

How to add Google Cloud MySQL libs to Tomcat 8.5

We want to deploy our Applications (.war-Files) via Tomcat 8.5 into a k8s-infrastructure, having the depending Database on Google Cloud SQL (MySQL). Google offe

How to get file's icon and type description in Ubuntu?

With Java 11 on Windows, I can get info about my files using: import javax.swing.filechooser.FileSystemView var type = FileSystemView.getFileSystemView().getSy

Unable to assign the result returned by the Method that receives a generic List and returns a List<?>

I'm trying to filter a List of objects that implements an interface. And I'm trying to create a generic method for all the classes. Something like: interface So

How to take 2D array inputs from command Line arguments in java?

I have to take inputs from the command line and assign them to a 2X2 array. Input = 1 2 3 4 (from cmd line) output = 1 2 3 4 int a[][] = new int[

Elasticsearch wildcard query in Java - find all matching fields and replace

I want to update all path fields starting with "example/one". Map<String, Object> parameters = new HashMap<>(); parameters.put("old", "example/one")

How to customize HTTP response for WebSocket upgrade request in Spring?

I have a WebSocket endpoint configured like this in my WebSocketConfigurer implementation public void registerWebSocketHandlers(WebSocketHandlerRegistry regist

Git Diff at method level

I am looking at getting information on all the methods/function Added , Deleted and Modified between any two commits Notes - Code Base is in Java and on Github

How to make sure rector netty http client create fix connection to http server

I use bellow code to create reactor netty http client and use this client to send request. ConnectionProvider connectionProvider = ConnectionProvider.builder("l

What does 'PT' prefix stand for in Duration?

I am trying to use the Duration class instead of long. It has superior literal syntax. I like its flexibility, though it looks weird. "PT10S" means 10 seconds

Java 8 Performance Issues In Windows Server 2019

I have recently migrated some scheduled jobs from a Windows Server 2012 virtual server to a new Windows Server 2019 virtual server, and have noticed some notabl

Create a function with a class Player with values "username" set to input, "size" to 50, "x" and "y" to 0

Trying to create a function with a class Player with values "username" set to input and the rest set to numbers. Searched a few websites but the answers weren't

Android kotlin Object Any type mismatch

How to assign kotlin map to java library map. This gives type mismatch error for Object and Any. I need to assign java map variable in a 3rd party java library

java: error: release version 17 not supported

I recently updated to Intellij 2021.1. However, whenever I try to run my program, I get: java: error: release version 17 not supported I have tried snooping aro

pbkdf2-sha256 hash algorithm issue

Help me please! I am trying to hash password using the pbkdf2-sha256 algorithm. Password = "user1", salt = "IFo7KXYswe7Fiu3BoVNOWg =", hashIterations = "27500".