trikitrok

import java.time.LocalDate;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class DogHouse {
  public List<Dog> dogs = new ArrayList<>();

  public String deposit(String userName, Dog dog) {
    String validationMessage = "";

trikitrok

class Manager {
  Worker worker;

  void doThing() {
    worker.doThing();
  }

  void doAnotherThing() {
     worker.doAnotherThing();
  }

trikitrok

// As a direct chain of calls
class FlightBooking  {
  // ...
  
  private boolean isSeatAvailable(int rowNumber, String seat) {
    return this.plane.getRow(rowNumber).isAvailable(seat);
  }
}

// Chaining calls through intermediate results 

trikitrok

// From  Ayush Jindal's exercises for code smells https://github.com/ayjindal/CodeSmells

public class Address {
  private String addressLine1;
  private String addressLine2;
  private String city;
  private String state;
  private String country;
  private String postalCode;

trikitrok

// Adapted from Code Smell: Null Check, Joe Eames https://medium.com/thinkster-io/code-smell-null-check-a0c4851fafbf

class DiscountCalculator {
  // ...

  public float getDiscount(String customerId) {
    Customer customer = customerRepository.findBy(customerId);
    if(customer == null) {
      return DEFAULT_DISCOUNT;
    } 

trikitrok

// From Code Smells – Part II, Ana Nogal https://www.ananogal.com/blog/code-smells-part-two/

public enum EmployeeType {
    Worker,
    Supervisor,
    Manager 
}

public class Employee {    
  private float salary;

trikitrok

// From Fixing Object oriented abusers, Manh Phan https://ducmanhphan.github.io/2020-01-24-Fixing-object-oriented-abusers/
 
public class CheckoutHanlder {
     // ...

     public double convertToCurrency(double price, String currencyTo) {
         if (currencyTo.equalsIgnoreCase("EUR")) {
             return price * 0.9;
         } else if (currencyTo.equalsIgnoreCase("CAD")) {
             return price * 1.35;

trikitrok

package coffee_shop.menu.beverages_builders;

import coffee_shop.Beverage;

public interface CoffeeBuilder {
  Beverage make();
  CoffeeBuilder withMilk();
  CoffeeBuilder withCream();
  CoffeeBuilder withCinnamon();
}

trikitrok

package coffee_shop.menu.beverages_builders;

import coffee_shop.Beverage;

public interface HotChocolateBuilder {
  Beverage make();
  HotChocolateBuilder withCream();
  HotChocolateBuilder withCinnamon();
}

trikitrok

package coffee_shop.menu.beverages_builders;

import coffee_shop.Beverage;

public interface TeaBuilder {
  Beverage make();
  TeaBuilder withMilk();
  TeaBuilder withCinnamon();
}