How to sort a list of strings based on order mentioned in static map having item of list as key. List={“AU”,”I”,”U”, “O”, “A1”} Need to sort the above list of string using the below map which has …
Unable to reload Maven project: Cannot reconnect. java.lang.RuntimeException: Cannot reconnect
i got a new Mac Book and installed IntellJ, as soon as I try to import (new Project from existing source) a maven project i get the error “Unable to reload Maven project”. To make it simpler, i just created a new simple maven project via start.spring.io to make sure I dont have any fancy dependenc…
Metadata from Media is null, JavaFX
I’m trying to get artist’s name from a song in my listview on click of a button but i’m getting this And here is my code How do i print it normally, only once? Answer Your listener will be invoked when any of the metadata change. Since you’re only interested in when the artist changes,…
Change node values to their heights in a binary tree
My task is to change the values of nodes to their heights in a binary tree. By the condition of the task, you need to change all the values in 1 pass of the tree, but you can violate this condition …
Spring boot cannot connect to postgre database deployed on another kubernetes pod
I deployed my microservice hello-k8s in a pod and another pod as postgre-server, I have successfully connected to localhost using port-forward and try to create a table in the deployed database. But when I deploy hello-k8s it return error due to database connection attempt failed. Disclaimer: kube-dns is work…
Displaying an ArrayList alphabetically
I have a class written that takes a string, counts the occurrences of each letter within the string and then prints the occurrences of each. I want this to be displayed alphabetically, but not sure …
What are the minimum requirements for Spring JPA
I am trying to setup a simple Spring JPA connection with Docker-Compose. This is my docker-compose.yml: My pom.xml looks like this: I’m used to see Spring trying to connect to a database before starting anything. I set up some temporary Repositories to make sure it had some Entities to work with. The lo…
How can I shuffling images using Java NetBeans
So, I design 12 labels and 1 button, and I have a folder contains 12 images; my question is how can I make auto images shuffle from the folder to the 12 labels each time I press the button?? …
In what domain is there a single instance of a Java singleton?
By definition, there can be a single instance of a Java singleton class. Except of course when there’s obviously several, including the same code running on different physical machines, virtual …
Adapter doesn’t show product image and price from Firebase Realtime Database
I am trying to retrieve data (a product image and the price for it) from Firebase Realtime Database and put it in a recyclerView, but I have some difficulties. In my database I stored the image url for one product and I want to show that image in an ImageView component placed in the cardView. I also managed t…