I am using AWS Java SDK in my application to talk to one of my S3 buckets which holds objects in JSON format. A document may look like this: Now, for a certain document lets say document1 I need to fetch the values corresponding to field a and b instead of fetching the entire document. This sounds like something that
How would I get multiple results from a MySQL table? [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 Say I have 2 columns, the first one is ID and the second one is colour. How would I search
Alternatives for TimeUnit.SECONDS.sleep(1); SpigotMC/ SpigotMC event not running
I was trying to make a Minecraft plugin while having this problem, but I thought this would be more of a Java discussion So I tried to make a spawner that would spawn a chicken every second (for testing, it would become every minute when I’m done), but while I was testing the event doesn’t seem to run (because TimeUnit.SECONDS.sleep()
Master/slave Job architectural design in spring batch using modular job approach
I hope you’re doing great. I’m facing design problem in spring batch. Let me explain: I have a modular spring batch job architecture, each job has its own config file et context. I am designing a …
No such directory: C:/Users/Admin/IdeaProjects/untitled/src/com/company/Main.java [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question I’m trying to write my first Java program, but I’m getting this error trying to open the main.java terminal: Cannot open Local Terminal No such
GUI stuck.(Java netbeans),
I added a function in my GUI and it holds for forever. It was working fine before. public void setBalance(String username,double balance){ Node current = headNode; while(current!=…
Why does my java variable say and stay ‘Evaluating’?
Problem: When I want to evaluate whether two List arrays are different, if I mouse over the variable it says “Evaluating…” and the Variables window says “Collecting Data..” and just stay there. I think this may be contributing to downstream issues. What I’m trying to do: The method below is to receive these two lists and evaluates value for value
Java 8 Optional: combine two possibly null object
I have to ensure if two values are non null. When the first and second have non null values, pass first as argument to second. If one of them are null value, then return false. This can be done in the following piece of code: It can also be done in short form: I was wondering how to do this
Android, opencv – No implementation found for long org.opencv.core.Mat.n_Mat() when trying to initialize Mat
I want to do some things using OpenCV and I’m trying to create Mat object: On this line I get the error: I have OpenCV as separate module in my android project and have imported it into my main module by adding implementation project(path: ‘:OpenCV’) in its build.gradle in dependencies section. I have seen one simillar question but it is
Stage: Not resizing to Scene
I have a scene on a stage. The width of the scene is 337.0 pixels. However, when I add it to the stage, the size of the stage is 337.6 pixels which leaves a white gap at the right edge of the screen due to the 0.6 pixel difference. I tried using stage.sizeToScene(), but that’s not working. I also tried