Instructions for Eclipse:

1. In the Project Explorer go to "New" --> "Project" Select "Dynamic Web Project".
2. Name the project "ECommerce".
3. Target runtime must be Apache Tomcat v8.0 (Create a new Runtime if necessary).
4. Select version 3.1 or above for the Dynamic Web module version.
5. Press Next, and in the Build path's Source Folder selection, remove all the folders and add a "src" folder.
6. Press Next, and in the Web Module settings: Leave the Context root as "ECommerce" Change the Content directory to "WebContent" Press Finish.
7. Right-click the Project and select "Build Path" --> "Configure Build Path".
8. Make sure the selected JRE System Library is one you have installed on your IDE (is not "unbound"), else: Remove it. Select "Add Library" --> "JRE System Library" --> "Workspace default JRE" or "Alternate JRE" (A good example of a correct JRE in an amd64-based device can be java-11-openjkd-amd64).
9. Apply and Close.