“Co to jest dziedzictwo w Javie” Kod odpowiedzi

Dziedziczenie Java


public class Sample {
    public static void main(String[] args) {
        Dog dog = new Dog();
        Cat cat = new Cat();
        Duck duck = new Duck();
        System.out.println(dog.getSound());
        System.out.println(cat.getSound());
        System.out.println(duck.getSound());
    }
}

class Animal {
    private String sound = "anything";

    public void setSound(String sound) {
        this.sound = sound;
    }

    public String getSound() {
        return sound;
    }
}

class Dog extends Animal {
    private String sound = "Aw aw";

    public String getSound() {
        return sound;
    }
}

class Cat extends Animal {
    private String sound = "Meow meow";

    public String getSound() {
        return sound;
    }
}

class Duck extends Animal {
    private String sound = "Quack Quack";

    public String getSound() {
        return sound;
    }
}
Fernandez, Jasmine M.

Jak stworzyć obiekt klasy abstrakcyjnej w Javie

We cannot create objects of an abstract class. To implement features of an abstract class, we inherit subclasses from it and create objects of the subclass. A subclass must override all abstract methods of an abstract class. However, if the subclass is declared abstract, it's not mandatory to override abstract methods.
Troubled Teira

Co to jest dziedzictwo w Javie

Inheritance is the mechanism where the object of one class acquires the property of the object of another class.
Disturbed Dog

Dziedziczenie Java

class Vehicle {
  protected String brand = "Ford";        // Vehicle attribute
  public void honk() {                    // Vehicle method
    System.out.println("Tuut, tuut!");
  }
}

class Car extends Vehicle {
  private String modelName = "Mustang";    // Car attribute
  public static void main(String[] args) {

    // Create a myCar object
    Car myCar = new Car();

    // Call the honk() method (from the Vehicle class) on the myCar object
    myCar.honk();

    // Display the value of the brand attribute (from the Vehicle class) and the value of the modelName from the Car class
    System.out.println(myCar.brand + " " + myCar.modelName);
  }
}
naly moslih

Dziedzictwo w Javie

Inheritance in Java is a mechanism in which one object acquires 
all the properties and behaviors of a parent object.
It is an important part of OOPs (Object Oriented programming system).
Gentle Goat

Dziedzictwo w Javie

Java Inheritance (Subclass and Superclass)
In Java, it is possible to inherit attributes and methods from one class to another. We group the "inheritance concept" into two categories:

subclass (child) - the class that inherits from another class
superclass (parent) - the class being inherited from
To inherit from a class, use the extends keyword.
Santino

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