I need to create a hashmap that can store multiple values for one key, I know multimaps could do this but I also need to keep those value lists to a specific length. I need a each key to store a list of n values with those being the latest n values, i.e if i reached length n and I
Tag: java
Java Spring omits fields when making a JSON
I have an object that looks more or less like this, and I use it as a GET response for my API. scores and values are both database entities. I wanted to add a String to the response with some additional information. What happens is that the objects are properly turned into a JSON and they show up in the
“grade” cannot be resolved to a variable
I have this exercise and the question is how can I solve the error “grade” cannot be resolved to a variable, without declare it in the class teacher. I suppose is the only error in my code. It is evident for me WHY then in my output only the grade variable is not assigned, but I don’t know H…
In Android Jetpack compose how to achieve GestureDetector.SimpleOnGestureListener…..?
I want to observe onFling Function to detect Velocityx and Velocity Means Swiping force/Velocity. In android we attach this to the android view.But donot find a way how to call this in Jetpack compose or alternative function for this in jetpack compose…? Answer Please take the Animation-in-Compose codel…
@SubclassMapping order
First time using MapStruct (1.5.0.Beta2) Say I have the following class hierarchy: C extends B extends A and Cdto extends Bdto extends Adto. And the following mapper: When I map a list of C objects I actually get a list of Bdtos. If however I change the ordering to: I get a list of Cdtos as expected. Is this …
Add View programmatically and after adding on button click change view background
Add View dynamically in LinearLayout and after adding View change any View background on the click button. On button, click change all imageview background or particular ImageView. Note : llLayout is my linear layout this layout adding in XML Answer when you are adding imageView into linear layout, at that ti…
My plugin in jmeter throws java.lang.NoSuchMethodError: org.openqa.selenium.chrome.ChromeOptions.setBinary
I have plugin in JMeter, which throws java.lang.NoSuchMethodError: org.openqa.selenium.chrome.ChromeOptions.setBinary when I want to run plugin. Im pretty sure, that ChromeOptions.set binary method is on my classpath, maybe some library discrepancy. My build.xml : My code: Can someone give me a point how to s…
How to use ${akka.kafka.consumer}?
I’m attempting to use the default Kafka config settings but I’m unsure how ${akka.kafka.consumer} is set. Reading https://doc.akka.io/docs/alpakka-kafka/current/consumer.html#config-inheritance Ive defined the following : In application.conf I define : But receive error when I startup the Akka Clu…
Convert fields before sending to the page
I have a user dto class and i need to convert some of its properties before send it to frontend. UsedDto class Now, from my controller i get data like this In my case, before send data, i should convert boolean values (enabled, active) to string “Y” or “N”. How can i do this? Answer Yo…
How to deal with whitespaces when reading a file with a scanner
I am writing a program where I read data from a file name that the user inputs using a scanner. I am making a new object from each line of the file using the following code: This works correctly until my file for .txt files where there is no whitespace in between the lines but when there is a blank