dany/EmployeeStatistics.java

import java.util.HashMap;
import java.util.Map;

public class EmployeeStatistics {

    public Map<Integer, Integer> getAgeDistribution() {
        // Age field not defined in Employee; returning empty for now.
        return new HashMap<>();
    }

    public Map<Integer, Integer> getSalaryDistributionByDept() {
        // Department field not defined in Employee; returning empty for now.
        return new HashMap<>();
    }
}