Azure AD with spring boot with user in local Database

Helo Here, I Hope you are doing well. I’s been few days I’m having this problem. I have a spring boot API using Azure AD authentication thanks to AADResourceServerWebSecurityConfigurerAdapter. Here is …

Why do I have to write twice to add an input in the Arraylist?

public static void main(String[] args) { List arrayList = new ArrayList(); Scanner input = new Scanner(System.in); do { System.out.println(“Enter a …

Error message – Creating a new Key store (PKCS12) (Andorid Studio)

I would like to pubish my app on the play store. Therefore at first I need to create a signed APK. Everytime I would like to create a new Key store two error messages appear (see below). First one: …

No exception raised for referenced unassigned array element containing an object

MRP class B { static int v; public B(int i) { System.out.format(“Constructor called with value %dn”, i); v=i; } } public class A { static B[] c; …

Can JavaFX realistically be used in a non-modular environment?

I’ve attempted to use JavaFX by following instructions found at: https://openjfx.io/openjfx-docs/ under “JavaFX and IntelliJ” -> “Non-modular with Maven” After completing steps …

Find all strings with smallest length in an array

I want to return the smallest values from my words array Finding the shortest word is easy but I am not sure how to return a new array with the shortest words. public class Test{ public static …

findViewById not accepting type argument even with compileSdkVersion 30

I generally use kotlin for android but my college wants me to use Java. So I created a new java project in android studio. The problem is I don’t want to cast the return value of findViewById() …

Spring Boot Batch – Stop and Start a multithreaded step with CompositeItemWriter

I am trying to stop and start a multithreaded step through Scheduler. But I am getting exception as Caused by: org.springframework.dao.InvalidDataAccessResourceUsageException: Unexpected cursor …

Get all elements in flat format from nested set structure

I need to get the data back similar to flatMap but it is not working in some scenario. Following are the details. Below is the pseudo code class Employee { String name; int age; } Employee emp1 = …

Why does wait(100) cause synchronized method to fail in multi threaded?

I am referencing from Baeldung.com. Unfortunately, the article does not explain why this is not a thread safe code. Article My goal is to understand how to create a thread safe method with the …