Finding all classes that have at least 2 protected fields

Here the solution:

import java.lang.reflect.Modifier;
import java.util.Collection;
import java.util.Date;

import org.burningwave.core.assembler.ComponentContainer;
import org.burningwave.core.assembler.ComponentSupplier;
import org.burningwave.core.classes.ClassCriteria;
import org.burningwave.core.classes.ClassHunter;
import org.burningwave.core.classes.FieldCriteria;
import org.burningwave.core.classes.SearchConfig;
import org.burningwave.core.io.PathHelper;

public class Finder {       
    
    public Collection<Class<?>> find() {
        ComponentSupplier componentSupplier = ComponentContainer.getInstance();
        PathHelper pathHelper = componentSupplier.getPathHelper();
        ClassHunter classHunter = componentSupplier.getClassHunter();

        FieldCriteria fieldCriteria = FieldCriteria.forEntireClassHierarchy().allThoseThatMatch((field) -> {
            return Modifier.isProtected(field.getModifiers());
        }).result((foundFields) -> {
            return foundFields.size() >= 2;
        });
        
        SearchConfig searchConfig = SearchConfig.forPaths(
            //Here you can add all absolute path you want:
            //both folders, zip and jar will be recursively scanned.
            //For example you can add: "C:\\Users\\user\\.m2"
            //With the line below the search will be executed on runtime class paths
            pathHelper.getMainClassPaths()
        ).by(
            ClassCriteria.create().byMembers(
                fieldCriteria
            ).useClasses(
                Date.class,
                Object.class
            )
        );

        try (ClassHunter.SearchResult searchResult = classHunter.findBy(searchConfig)) {

            //If you need all found fields unconment this
            //searchResult.getMembersFlatMap().values();

            return searchResult.getClasses();
        }
    }

}