How do you get a parent class to return type T?

These are some of the classes that I’m using public abstract class DCDataManager<T extends DCData> { public T getData(UUID id){ return cache.get(id); } … public class ApfelPlayerDataManager extends DCPlayerDataManager<ApfelPlayerData>{ public ApfelPlayerDataManager(DrycellPlugin plugin) { super(plugin); this.type = ApfelPlayerData.class; this.loadCurrentPlayers(); } …. Based on the above classes, why do I need to cast apfelPlayerDataManager.getData(p.getUniqueId()) to ApfelPlayerData? Shouldn’t…

Error creating bean with name ‘mainController’ & Error creating bean with name ‘booksInterface’

I am trying to make a simple table that shows the data in a database and the program has been throwing error in creating bean with name ‘…’ when I try to compile. I’ve looked through several questions with the same error, however, none of their solutions help. The error I receive is: org.springframework.beans.factory.UnsatisfiedDependencyException: Error…

How to combine all .SCSS files imported to different JS components and output them to a single .CSS bundle?

I’m working on a project that utilizes plain JS (no frameworks) and SCSS and bundling it all with Webpack. The structure is roughly like this: │ index.html │ index.js │ webpack.config.js │ ├───build │ app.bundle.js │ bundle.css │ error.bundle.js │ index.html │ └───src ├───components │ │ App.js │ │ │ └───ErrorMessage │ error.scss │ ErrorMessage.js…

Spring Boot can’t scan anotation with mutiple module

I using spring boot and design by mutiple modules. Below my project structure : Module shop core : Package name : com.baotrung.core.business I design some sub package : model, repositores, services Maven : <modelVersion>4.0.0</modelVersion> <artifactId>shop-core</artifactId> <packaging>jar</packaging> <dependencies> <!– shop-core-model !–> <dependency> <groupId>com.baotrung</groupId> <artifactId>shop-core-model</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.9</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> </dependencies>…