When everything is built and run, and run, the backend will be able to be accessed using the http://localhost:8080 URL.

There are several ways to run a Spring Boot application; some of them are mentioned here:

• Running the Spring Boot application main class using an IDE.
• Building a JAR or WAR file using the following Maven command and then running:

$ cd backend
$ mvn clean install
$ java -jar target/<package-name>.[jar|war]

• Running Tweety using the Spring Boot Maven plugin:

$ mvn clean spring-boot:run

• Building the frontend using the following command:

       $ npm install

• Running the frontend using the Angular CLI command that will start the frontend application in http://localhost:4200:

       $ ng serve