NoClassDefFoundError when trying to load graphhopper from external project

[undercarriage]

To start, I’m a bit new to Java and graphhopper. We’re trying to use graphhopper as a routing engine for an existing java program. I cloned the repo, added it to eclipse, got the examples running in their directories, everything seems good. But now when I try to use graphhopper from within the existing program I’m getting the error java.lang.NoClassDefFoundError: GraphHopper.

Here’s my minimal (not) working example for a class being called by main:

package distanceFactor;

import com.graphhopper.GraphHopper;
import com.graphhopper.config.CHProfile;
import com.graphhopper.config.Profile;



public class SIM_Routing_Graphhopper {
	public SIM_Routing_Graphhopper() {
        String relDir = "/Users/Admin/git/graphhopper/graphhopper/";
        GraphHopper hopper = createGraphHopperInstance(relDir + "cincinnati.pbf");
        //routing(hopper);
	}
	
    static GraphHopper createGraphHopperInstance(String ghLoc) {
        GraphHopper hopper = new GraphHopper();
        hopper.setOSMFile(ghLoc);
        // specify where to store graphhopper files
        hopper.setGraphHopperLocation("target/routing-graph-cache");

        // see docs/core/profiles.md to learn more about profiles
        hopper.setProfiles(new Profile("car").setVehicle("car").setWeighting("fastest").setTurnCosts(false));

        // this enables speed mode for the profile we called car
        hopper.getCHPreparationHandler().setCHProfiles(new CHProfile("car"));

        // now this can take minutes if it imports or a few seconds for loading of course this is dependent on the area you import
        hopper.importOrLoad();
        return hopper;
    }
}

This fails both when graphhopper-core is added through maven, and when core and webapi are added manually into the class path in Build Path.

Any thoughts are suggestions would be greatly appreciated!