Python – Object Oriented

class Dog:
    """ This is a Dog Class """

    # Initializer
    def __init__(self, name, breed, age):
        self.name = name
        self.breed = breed
        self.age = age

    def sayBreed(self):
        print(self.name)

    def sayAge(self):
        print(self.age)

    def sayIntroduction(self):
        print(f'I am {self.name},{self.breed} and age is {self.age}.')


if __name__ == ('__main__'):
    dog1 = Dog("Kevin", "Bulldog", 3)
    dog2 = Dog("Kaito", "Shibaken", 2)

    dog1.sayIntroduction()
    dog2.sayIntroduction()

import dog_class

a_dog = dog_class.Dog("Susan", "Poodle", 4)
a_dog.sayIntroduction()

b_dog = dog_class.Dog("Anthony", "Shepard", 2)
b_dog.sayIntroduction()

$python ./dog_use.py
I am Susan, Poodle and age is 4.
I am Anthony, Shpard and age is 2.

package JavaPackage;

public class Dog {

    // attributes
    public String breed;
    public int age;
    public String name;

    // methods
    public void sayBreed() {
        System.out.println(this.breed);
    }

    public void sayAge() {
        System.out.println(this.age);
    }

    public void sayIntroduction() {
        System.out.println("I am " + this.name + ","
                + this.breed + " and age is " + this.age + ".");
    }

    // Constructor
    public Dog(String name, String breed, int age) {
        this.name = name;
        this.breed = breed;
        this.age = age;
    }

    public Dog() {
        this("noName", "Breed of Dog", 0);
    }
}

package JavaPackage;

public class CallMethod {
    public static void main(String[] args) {

        // Instantiation
        Dog dog1 = new Dog("Kevin", "bulldog", 3);
        Dog dog2 = new Dog("Kaito", "Shibaken", 2);
        Dog dog0 = new Dog();

        // call method
        dog1.sayIntroduction();
        dog2.sayIntroduction();
        dog0.sayIntroduction();

    }
}