Tutoriais - Programação Orientada a ObjetosConsidere os seguintes conceitos do mundo real: pizzaria, pizzaiolo, pizza, consumidor. Considere ainda que em uma determinada pizzaria, dois pizzaiolos se alternam. Um deles trabalha segundas, quartas e sextas e só sabe fazer pizza de calabresa (queijo + calabresa + tomate), o outro trabalha terças, quintas e sábados e só sabe fazer pizza de presunto (queijo + presunto + tomate). A pizzaria fecha aos domingos. Tente mapear os conceitos acima para o padrão Abstract Factory (hierarquia de fábricas, hierarquia de produtos, cliente) e implemente um programa que receba uma data como parâmetro (formato dd/mm/yyyy) e imprima os ingredientes da pizza que é feita no dia ou, se a pizzaria estiver fechada, informe isso na tela. Agora imagine que a pizzaria agora faz também calzones (novamente, de calabresa ou presunto). Complemente a solução com mais este componente.
/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação abstrata de um calzone
*
* Abstract Product - declara uma interface para um tipo de objeto-produto
* (Gamma, 2000)
*/
public interface Calzone
{
/**
* Retornar os ingredientes que compõem o calzone
*
* @return ingredientes que compõem o calzone
*/
public String ingredientes();
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação de um calzone de calabresa
*
* Concrete Product - define um objeto-produto a ser criado pela
* correspondente fábrica concreta (Gamma, 2000)
*/
public class CalzoneCalabresa implements Calzone
{
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Calzone#ingredientes()
*/
@Override
public String ingredientes()
{
return "queijo, calabresa e tomate";
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação de um calzone de presunto
*
* Concrete Product - define um objeto-produto a ser criado pela
* correspondente fábrica concreta (Gamma, 2000)
*/
public class CalzonePresunto implements Calzone
{
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Calzone#ingredientes()
*/
@Override
public String ingredientes()
{
return "queijo, presunto e tomate";
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação abstrata de uma pizza
*
* Abstract Product - declara uma interface para um tipo de objeto-produto
* (Gamma, 2000)
*/
public interface Pizza
{
/**
* Retornar os ingredientes que compõem a pizza
*
* @return ingredientes que compõem a pizza
*/
public String ingredientes();
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação de uma pizza de calabresa
*
* Concrete Product - define um objeto-produto a ser criado pela
* correspondente fábrica concreta (Gamma, 2000)
*/
public class PizzaCalabresa implements Pizza
{
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Pizza#ingredientes()
*/
@Override
public String ingredientes()
{
return "queijo, calabresa e tomate";
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação de uma pizza de presunto
*
* Concrete Product - define um objeto-produto a ser criado pela
* correspondente fábrica concreta (Gamma, 2000)
*/
public class PizzaPresunto implements Pizza
{
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Pizza#ingredientes()
*/
@Override
public String ingredientes()
{
return "queijo, presunto e tomate";
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
/**
* Representação abstrata de um pizzaiolo
*
* Abstract Factory - declara uma interface para operações que criam
* objetos-produto abstratos (Gamma, 2000).
*/
public abstract class Pizzaiolo
{
/**
* Retornar o pizzaiolo do dia
*
* @param data data do pedido
* @return pizzaiolo do dia
*/
public static Pizzaiolo pizzaiolo(String data)
{
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy");
Calendar calendar = Calendar.getInstance();
try
{
calendar.setTime(simpleDateFormat.parse(data));
}
catch(ParseException exception)
{
}
switch(calendar.get(Calendar.DAY_OF_WEEK))
{
case Calendar.MONDAY:
case Calendar.WEDNESDAY:
case Calendar.FRIDAY: return new PizzaioloCalabresa();
case Calendar.TUESDAY:
case Calendar.THURSDAY:
case Calendar.SATURDAY: return new PizzaioloPresunto();
default: throw new PizzariaCloseException("Pizzaria fechada aos domingos!");
}
}
/**
* Retornar um calzone
*
* @return calzone
*/
public abstract Calzone calzone();
/**
* Retornar uma pizza
*
* @return pizza
*/
public abstract Pizza pizza();
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação de um pizzaiolo especializado em calabresa
*
* Concrete Factory - implementa as operações que criam objetos-produto
* concretos (Gamma, 2000)
*/
public class PizzaioloCalabresa extends Pizzaiolo
{
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Pizzaiolo#calzone()
*/
@Override
public Calzone calzone()
{
return new CalzoneCalabresa();
}
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Pizzaiolo#pizza()
*/
@Override
public Pizza pizza()
{
return new PizzaCalabresa();
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Representação de um pizzaiolo especializado em presunto
*
* Concrete Factory - implementa as operações que criam objetos-produto
* concretos (Gamma, 2000)
*/
public class PizzaioloPresunto extends Pizzaiolo
{
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Pizzaiolo#calzone()
*/
@Override
public Calzone calzone()
{
return new CalzonePresunto();
}
/* (non-Javadoc)
* @see com.ybadoo.tutoriais.poo.tutorial08.exercicio17.Pizzaiolo#pizza()
*/
@Override
public Pizza pizza()
{
return new PizzaPresunto();
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Pizzaria fechada
*/
public class PizzariaCloseException extends RuntimeException
{
/**
* Identificador de serialização da classe
*/
private static final long serialVersionUID = 1L;
/**
* Inicializar a exceção
*/
public PizzariaCloseException()
{
super();
}
/**
* Inicializar a exceção com uma mensagem
*
* @param message mensagem
*/
public PizzariaCloseException(String message)
{
super(message);
}
}/*************************************************************************
* Copyright (C) 2009/2025 - Cristiano Lehrer (cristiano@ybadoo.com.br) *
* Ybadoo - Solucoes em Software Livre (ybadoo.com.br) *
* *
* Permission is granted to copy, distribute and/or modify this document *
* under the terms of the GNU Free Documentation License, Version 1.3 or *
* any later version published by the Free Software Foundation; with no *
* Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A *
* A copy of the license is included in the section entitled "GNU Free *
* Documentation License". *
* *
* Ubuntu 16.10 (GNU/Linux 4.8.0-39-generic) *
* OpenJDK Version "1.8.0_121" *
* OpenJDK 64-Bit Server VM (build 25.121-b13, mixed mode) *
*************************************************************************/
package com.ybadoo.tutoriais.poo.tutorial08.exercicio17;
/**
* Classe responsável pela execução do padrão de projeto Abstract Factory
*/
public class Application
{
/**
* Construtor para inicializar a execução do padrão de projeto
* Abstract Factory
*/
private Application()
{
}
/**
* Método principal da linguagem de programação Java
*
* @param args argumentos da linha de comando (não utilizado)
*/
public static void main(String[] args)
{
Pizzaiolo pizzaiolo = Pizzaiolo.pizzaiolo("19/10/2016");
System.out.println(pizzaiolo.pizza().ingredientes());
System.out.println(pizzaiolo.calzone().ingredientes());
pizzaiolo = Pizzaiolo.pizzaiolo("20/10/2016");
System.out.println(pizzaiolo.pizza().ingredientes());
System.out.println(pizzaiolo.calzone().ingredientes());
}
}Ybadoo - Soluções em Software Livre • Copyright 2009/2025 • 