I tried to rotate rectangle using rotateMatrix, following tutorial on https://developer.android.com/training/graphics/opengl/motion, but when I runned it, the rectangle is rotating around (I think) point 0,0. What do I need to change to make it rotate around it’s center? Answer If you want to rotate around a pivot you have to: Translate the object so that the pivot point is moved
ANTLR AST visitor that returns different data types
I finished converting the ANTLR CST into an AST and created a specific Visitor<T> interface that allows me to visit all my AST nodes, but the main issue i’m having is that some visits should return different data types, and i’m not sure how to go about this. For example, for simple arithmetics operations i want to return a double
“b’OCI runtime create failed: container_linux.go:380?
Client Error: Bad Request (“b’OCI runtime create failed: container_linux.go:380: starting container process caused: exec: “/usr/lib/jvm/java-8-openjdk-amd64/bin/java”: stat /usr/lib/jvm/java-8-openjdk-amd64/bin/java: no such file or directory: unknown'”) this my error ,I cann’t fix this ,when I use docker-compose and docker my version Dockerfile docker-compose.yml docker-compose.node-java.yml Any suggestion will help !!! thank you very much Answer I think the path to the java executable in
Why ‘java.net.SocketException: Socket closed’ after ‘java.net.ConnectException: Connection refused’?
I’m trying to connect to a remote host trying over and over waiting for it to come up. However, after one shot with a Connection Refused exception (because the server isn’t running yet), it throws Socket closed exception continuously. Why would the socket be closed? The socket should simply be in the same state as it was before the failed
Java Program that loads text documents and ranks them based on amount of repeated words – keep getting file not found error
I’m creating a Java program that can load different text documents (in this case, the first chapter or so of four different novels) and then print them out in order of their vocabulary ranks. In other …
Jackson ObjectMapper JSON to Java Object RETURNS NULL Values
I’m trying to loop through the child object of a JSON array which stores objects. My JSON file is as follows: I would like to iterate through the each of the object of the JSON array and output them to the console window with: I can parse with Although, this gives me the whole JSON file and does not read
Collection serialization issues
So my issue is a bit complex. I’ve got one User class, which I put into ConcurrentHashMap. One class corresponds to one user. Key is user’s ID. I’m using GSON to serialize this …
Using queue to rearrange every other integer
I’m trying to figure out how to take in an integer and rearrange them so that every alternating character is saved (So the [1, 2, 3, 4, 5, 6] would return [1, 4, 2, 5, 3, 6]). I think a queue would be the best to use for this problem so here’s what I have so far. It returns [3,
Delete from a JPARepository with an EmbeddedId by a field in the primary key
Currently I have a Spring Boot application using JpaRepository<Employee, EmployeePk> where let’s say EmployeePk is firstname, lastname. Is there a way to delete by Primary Key field without having to specify a custom @Query? It’s ok to delete multiple rows if multiple people were named “John”. Example: such as Employee class and Embedded PK Answer Thanks for adding the Employee
MacOS Eclipse RCP MenuItem Selection event invalidation
MacOS 10.15.5 Eclipse RCP 2020-09 Problem : MenuItem Selection event invalidation Code : result: MacOS cannot execute , Event not triggered Window OS Is OK Answer You can’t have SWT.PUSH style menu items directly on the menu bar (at least not on macOS). You need to create SWT.CASCADE menu items with the push items as children. (Adapted from this SWT