This is a simple CRUD application made in Java with Spring Framework in Backend and with Angular (Typescript) in Frontend.
You can show Backend project at https://github.com/vscalcione/springboot-angular9-webapp-crud/tree/master/springboot-angular-crud-be
and Frontend at https://github.com/vscalcione/springboot-angular9-webapp-crud/tree/master/angular9-springboot-client