here in this java code we are swapping both the arrays, in this case only the memory reference of arrays is changing or there is swapping of elements between A and B? What would be the time complexity O(1) or O(m+n) where m and n are sizes of arrays A and B respectively. This piece of code was found on
Add in openapi file helidon objects health and metrics
I was write file openapi.yml wth openapi 3.0 description for services in my helidon project. But I use standart helidon handlers too (health and metrics): return Routing.builder() .register(…
Jackson deserialization to concrete polymorphic class
I have following Jackson annotated classes (Kotlin) I try to deserialize JSON that does not contain type property but I provide concrete class so it should not matter I get Missing type id when trying to resolve subtype of … anyway. Is there a way how to tell Jackson to use the type provided in the dese…
How to resolve `Raw use of parameterized class ‘Comparable’` warning?
Got to implement the method below for an assignment which it’s subject is “WildCards”, but don’t know where to use wildcards in order to resolve the warning. Any ideas ? Answer Comparable is a generic interface, so to use it safely you must always specify the generic type to use. In yo…
Rendering same video to 2 Surfaces from a MediaCodec
MediaCodec has 2 ways of operating: you either pass a Surface for it to render to, or you read the output buffer and paint it to the screen yourself. In the first case, where I pass a surface: is it possible to paint the same MediaCodec decoded video to 2 surfaces? The decoding loop looks something like this:…
Parameter index out of range (1 > number of parameters, which is 0) When trying to read SQL Table
So I am trying to get some data out of my SQL Table with this servlet and output it in a JSP file. I found some articles with similar problems to mine but none of them helped in my case. I Hoped someone here can help me. I have to do this Project for one of my classes. I am
JAVA Method returns unexpected value
I am a very new java programmer, the below code is my first attempt at my own project. I’m certain the code is a mess, please forgive me. In the below code the user is prompted to enter 5 values between 1 and 50. I am placing the input values into an int[]. I want to verify that the numbers
import android.support.v4.app.ActivityCompat;
This is the error i am seeing when i add “simple_permissions” package. How can i fix this? I recently upgraded flutter and it used to work very well before the upgrade. /root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/Simp…
Error in Debug caused by creation of beans
I state that I am new on the forum and I am a beginner with Java, so I apologize in advance for any mistakes. I’m working on a web application in Java, using Spring Boot, to utilize Google Drive API for list files on my Google Drive. I’m follow the courses on youtube from carbonrider, so the main …
Referencing packages in java without using String
Is there a way to reference a package in java in code without using a String? Let me explain myself: I’ve a function that fetches all object contained in a package, but I’ve to reference that package using a String, lets say “com.google.guava”. This works, however, If I change the pack…