test.java

public interface FitnessCustomer {
  private static enum Level {
    BRONZE, SILVER, GOLD
  }
  private Level level;
  public void setLevel(Level level) {
    this.level = level;
  }
  public Level getLevel() {
    return this.level;
  }
  public double getFees();
  public boolean canAccessPool(){
    return false;
  }
  public boolean hasOwnLocker(){
    return false;
  }
  public double getEquipmentDiscount();
}  
    
public class BronzeFitnessCustomer extends FitnessCustomer {
  @Override
  public double getFees() {
    return CustomerConstants.BRONZE_FEES;
  }
  
  @Override
  public double getEquipmentDiscount() {
    return CustomerConstants.BRONZE_DISCOUNT;
  }
}

public class SilverFitnessCustomer extends FitnessCustomer {
  @Override
  public double getFees() {
    return CustomerConstants.SILVER_FEES;
  }
  
  @Override
  public double getEquipmentDiscount() {
    return CustomerConstants.SILVER_DISCOUNT;
  }
  
  @Override
  public boolean canAccessPool() {
    return true;
  }
}

public class GoldFitnessCustomer extends FitnessCustomer {
  @Override
  public double getFees() {
    return CustomerConstants.GOLD_FEES;
  }
  
  @Override
  public double getEquipmentDiscount() {
    return CustomerConstants.GOLD_DISCOUNT;
  }
  
  @Override
  public boolean canAccessPool() {
    return true;
  }
  
  @Override
  public boolean hasOwnLocker() {
    return true;
  }
}