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 deserialization and not to
Tag: java
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 your case, something like: is likely what you’re looking
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: Answer The
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/SimplePermissionsPlugin.java:9: error: cannot find symbol import android.support.v4.app.ActivityCompat; Answer I suggest you to check the package before using it. It seems that simple_permissions is outdated and this package hasn’t been
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 and the
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 package name, the IDE is not able to automatically refractor
Kafka consumer showing numbers in unreadable format
I am trying out the kafka streaming. I am reading messages from one topic and doing groupByKey and then doing the count of groups. But the problem is that the messages count is coming as unreadable “boxes”. If I run the console consumer these are coming as empty strings This is the WordCount code I wrote This is the output
Throwing own exceptions
I have this class Account Now I also have this exception that I wrote Now I need to throw this exception in the class account,when the searched account number does not exist.Now my question is in which method(or function I think that is the same,please correct me if I’m wrong) do I throw this exception.And after what check.How would I