I've looked into invoking a Java method but I am stuck trying to call a Java method which returns a list so that I can use that list in JSP.
JSP:

<%@ page import="mainPack.ShoppingService"%>
<%@ page import="java.util.List" %>

     $('#mainCheckbox').on( "change",function () {
            <%
             ShoppingService s = new ShoppingService();
            %>
            <%
            List<String> storesList = s.getStoresList();
            %>
            //unresolved variable error
            console.log(storesList.contains("Macys"));

        });

Java:

public List<String> getStoresList() {
        return storeDao.getStoresList();
 }

I've also tried going into the controller and making it an attribute.
JSP:

$('#mainCheckbox').on( "change",function () {
                //I get a Uncaught Reference Error: Macys Not Defined
                var jsArray = ${storesList};
    
            });

Java:

model.addAttribute("storesList", ShoppingService.getStoresList());

I am not sure the second attempt isn't working. When I open up debugger I see that it seems to translate the list into:

var jsArray = [Macys, JcPenny, Kohls, Target];