I’m trying to use Ktorm in my new springboot application, and get myself into problem when trying to use Ktorm entities interfaces as springboot controller parameters. The entity and Controller look like this: I got this exception once calling function addTask(): [HttpMessageConversionException] Type de…
Tag: java
Assigning datatype to a generic type of variable based on a condition in Java
I have a usecase of supporting multiple datatypes for same variable. So tried to use Generics. For example The above code does not work. Can anyone please suggest a good way of doing it? Answer I changed the class names. You declared the type with a <?> parameter, and that is what is causing you problem…
CORS issue / akka-http-cors / No ‘Access-Control-Allow-Origin’ header is present on the requested resource in Scala/Java
How do I implement akka-http-cors correctly to be able to allow access from any origin (domain, in my case localhost:3000) to a Https Server (Scala/Akka)? Based on the akka-http-cors documentation should defaultSettings do the job, but I am still doing something wrong: Google Chrome Error: Firefox Error: akka…
Having issues calling a decorator method (Java)
Working on a group project that is essentially a text-based Pokemon rip-off. My classmates and I were given a UML to work from so I can’t accept any solutions that would add methods or change their parameters. But essentially the issue we’re running into is this: There is a singleton PokemonGenera…
How can i get the Bot Message ID and edit the Message – Discord JDA Java
For my school project i am learning how to set up a bot. I figured out how to get a message the Message ID. But the ID is not from the Bot, he get the ID from the Author who wrote the command. : Error in Console: I can tell from the Error that my MessageId is not from the
creating exploitable .csv file for java program
I’m both new to JAVA and .csv file so bear with me please! Here’s my problem, i have this word file : basically i have a theme (here Science) a difficulty level, a question number, a question, available answers and a right answer I would like to be able to create a .csv file that i could then expl…
Converting serially reading multiple files to reading them in parallel? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 1 year ago. Improve this question Following code in Java reads multiple files one after another serially and …
Check if a char is in a 2D array in java
I have been working on my homework of creating a simple chess program. The chessboard is a 2D array, named board. The pieces are all single chars like R,Q,K, and empty space is filled with a ‘ ‘ char, so a space. The method get should return the char or whatever is there on the coordinate (x,y). A…
Call method in Fragment from some class
I’ve been working on Android App in AndroidStudio. Application has Fragment, let’s call it MainFragment, and seperate Java Class file, let’s call it SQLiteControler.class The problem is when i try to call method from Fragment in SQLiteController im getting null object reference as error Here…
PostgreSql unable to resolve table user
My problem is that intellij raise an error that unable to resolve table user. Table is created in database it can be seen in database in Intellij but it looks like compiler doesn’t have an access to it. Did someone have similiar problem? enter image description here Answer If you can confirm that the ta…