Lab#SE00-2: Maven Clinic

Java SE Lab 00

javase
lab
model
composition
Java SE Lab 00, part 2
Author

albertprofe

Published

Tuesday, June 1, 2021

Modified

Friday, November 1, 2024

📘 Linux Lab#SE00-2: Maven Clinic

  1. Create a Maven/Gradle Java SE Project with the UML and classes defined below.

  2. Add Lombok, JUnit and Faker dependencies

  3. Refactor: remove boilerplate code (getters, setters and so on) and work with Lombok from Person, MyDate and Clinic

  4. Create Junit tests to test objects. Use Faker to create objects:

    1. Test createPerson: check weather the object Person creation works properly.
    2. Test createMyDate: check weather the object Car creation works properly.
    3. Test createClinic: check weather the object Book creation works properly.

  5. Complete these mehtods within Clinic class:

    1. public boolean isAccepted(Person person) {}: return true when weightIndex() < lowestWeightIndex
    2. public void addAsMember(Person person) {}: add as a member if member isAccepted(Person person)
    3. public Person personWithHighestWeightIndex() {}: return Person object with the highest WeightIndex()

  6. Create Junit tests to test the previous three new methods created at Clinic class.

1 UML

  • The class diagram represents three classes, Person, MyDate, and Clinic.
    • The Person class has four private fields name, age, height, and weight and one field birthMyDate of type MyDate .
    • The MyDate class has three private fields day, month, and year.
    • The Clinic class has two private fields lowestWeightIndex and name, and a field members which is an ArrayList of Person objects.
  • The relationship between Person and MyDate is a Composition relationship, where as the relationship between Clinic and Person is also a Composition relationship but trough an ArraList.

classDiagram
class Person {
  -name: String
  -age: int
  -height: int
  -weight: int
  -birthMyDate: MyDate
}

class MyDate {
  -day: int
  -month: int
  -year: int
}

class Clinic {
  -lowestWeightIndex: double
  -name: String
  -members: ArrayList~Person~
}

Person *-- MyDate: Composition
Clinic *-- Person: Composition

2 Base Classes

2.1 Person Class

Here, the Person class represents a person with a name, address and others.

Code Person 
Person.java

  package exemple3;

public class Person {

    private String name;
    private int age;
    private int height;
    private int weight;
    //composition relationship
    private MyDate birthMyDate;

    public Person(String name) {
        this(name, 0); // run here the other constructor's code and set the age parameter to 0
    }

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
        this.weight = 0;
        this.height = 0;
    }
    
    public Person(String name, int height, int weigth) {
        this.name = name;
        this.age = 0;
        this.weight = weigth;
        this.height = height;
    }

    public Person(String name, int day, int month, int year) {
        this.name = name;
        this.weight = 0;
        this.height = 0;
        this.birthMyDate = new MyDate(day, month, year);
    }
    
    public Person(String name, int age, int day, int month, int year) {
        this.name = name;
        this.age = age;
        this.weight = 0;
        this.height = 0;
        this.birthMyDate = new MyDate(day, month, year);
    }

    public void printPerson() {
        System.out.println(this.name + " I am " + this.age + " years old");
    }

    public void becomeOlder() {
        this.age++;
    }

    public void becomeOlder(int years) {
        this.age = this.age + years;
    }

    public boolean isAdult() {
        if (this.age < 18) {
            return false;
        }

        return true;
    }

    public double weightIndex() {
        double heightInMeters = this.height / 100.0;

        return this.weight / (heightInMeters * heightInMeters);
    }
    
    public boolean olderThan(Person compared) {
        if (this.age > compared.getAge()) {
            return true;
        }

        return false;
    }

    public String toString() {
        return this.name + " I am " + this.age + " years old, my weight index is " + this.weightIndex() + ", born "
                + this.birthMyDate;
    }

    //setters and getters
    public void setHeight(int height) {
        this.height = height;
    }

    public int getHeight() {
        return this.height;
    }

    public int getWeight() {
        return this.weight;
    }

    public void setWeight(int weight) {
        this.weight = weight;
    }

    public String getName() {
        return this.name;
    }
    
    public int getAge() {
        return this.age;
    }
}

2.2 MyDate Class

Here, the MyDate class represents a date with a day, month and year.

Code MyDate 
MyDate.java

package exemple3;

public class MyDate {
    private int day;
    private int month;
    private int year;

    public MyDate(int day, int month, int year) {
        this.day = day;
        this.month = month;
        this.year = year;
    }

    public String toString() {
        return this.day + "." + this.month + "." + this.year;
    }

    public boolean earlier(MyDate compared) {
        // first we'll compare years
        if (this.year < compared.year) {
            return true;
        }

        // if the years are the same, we'll compare the months
        if (this.year == compared.year && this.month < compared.month) {
            return true;
        }

        // years and months the same, we'll compare the days
        if (this.year == compared.year && this.month == compared.month && this.day < compared.day) {
            return true;
        }

        return false;
    }
}

2.3 Clinic Class

Here, the Clinic class represents a clinic with a name, lowestWeightIndex and members.

Code Clinic 
Clinic.java

package exemple3;

import java.util.ArrayList;

public class Clinic {

    private double lowestWeightIndex;
    private String name;
    private ArrayList<Person> members;

    public Clinic(String name, double lowestWeightIndex) {
        this.lowestWeightIndex = lowestWeightIndex;
        this.name = name;
        this.members = new ArrayList<Person>();
    }

    public boolean isAccepted(Person person) {
        // to-do
    }

    public void addAsMember(Person person) {
        // to-do
    }

    public Person personWithHighestWeightIndex() {
        // to-do
    }

    public String toString() {
        String membersAsString = "";

        for (Person member : this.members) {
            membersAsString += "  " + member + "\n";
        }

        return "Clinic:\n " + this.name + " (" + this.lowestWeightIndex +  ") " + "  \n members: \n" + membersAsString;
    }

    //getters and setters
    public double getLowestWeightIndex() {
        return lowestWeightIndex;
    }

    public void setLowestWeightIndex(double lowestWeightIndex) {
        this.lowestWeightIndex = lowestWeightIndex;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public ArrayList<Person> getMembers() {
        return members;
    }

    public void setMembers(ArrayList<Person> members) {
        this.members = members;
    }

}
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