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What Is Inheritance?

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Sumit Rawal answered on October 5, 2021 Popularity 9/10 Helpfulness 1/10

answer What Is Inheritance?

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What Is Inheritance?

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Inheritance provides a way to create a new class from an existing class. The new class is a specialized version of the existing class such that it inherits all the non-private fields (variables) and methods of the existing class. The existing class is used as a starting point or as a base to create the new class.

The IS A Relationship

After reading the above definition, the next question that comes to mind is this: when do we use inheritance? Wherever we come across an IS A relationship between objects, we can use inheritance.

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Contributed on May 17 2023

Sumit Rawal

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inheritance

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- "is a" relationship
- All class extends `Object` class
- extended or derived class has same logic as base class (`public` and `protected`)
- Allows code re-use
- `protected` = access modifier that acts like public in a package
- `private` members are not inherited by subclasses / derived class

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Source: Grepper

Tags: inheritance inhe

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Contributed on Aug 05 2023

Innocent Iguana

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inheritance

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class left {
public:
    void foo();
};

class right {
public:
    void foo();
};

class bottom : public left, public right {
public:
    void foo()
    {
        //base::foo();// ambiguous
        left::foo();
        right::foo();

        // and when foo() is not called for 'this':
        bottom b;
        b.left::foo();  // calls b.foo() from 'left'
        b.right::foo();  // call b.foo() from 'right'
    }
};

Popularity 10/10 Helpfulness 2/10 Language cpp

Source: stackoverflow.com

Tags: c++

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Contributed on Oct 05 2021

Spotless Sloth

0 Answers Avg Quality 2/10

inheritance

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class Base {
    public Base() {
        System.out.println("Base");
    }
}

class Derived extends Base {
    public Derived() {
        System.out.println("Derived");
    }
}

class DeriDerived extends Derived {
    public DeriDerived() {
        System.out.println("DeriDerived");
    }
}

public class Test {
    public static void main(String[] args) {
        Derived b = new DeriDerived();
    }
}

Popularity 9/10 Helpfulness 1/10 Language java

Source: www.javaguides.net

Tags: inheritance inhe

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Contributed on Dec 01 2022

Colorful Crocodile

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inheritance'

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// Base Class Vehicle
class Vehicle {

    // Private Fields
    private String vehicle;
    private int year;
    private String model;

    // Parameterized Constructor
    public Vehicle(String vehicle, int year, String model) {
        this.vehicle = vehicle;
        this.year = year;
        this.model = model;
    }

    // public method to print details
    public void printDetails() {
        System.out.println("Vehicle Type: " + vehicle);
        System.out.println("Year: " + year);
        System.out.println("Model: " + model);
    }

}

// Derived Class Car
class Car extends Vehicle {

    // Private field

    // Parameterized Constructor
    public Car(String vehicle, int year, String model) {
        super(vehicle, year, model); // calling parent class constructor

    }

    public void carDetails() { // details of car
        printDetails(); // calling method from parent class

    }

}

class Sample {

    public static void main(String[] args) {
        Car elantraSedan = new Car("Car", 2019, "Elantra"); // creation of car Object
        elantraSedan.carDetails(); // calling method to print details
    }
}

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Source: Grepper

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Contributed on Apr 03 2022

Fernandez, Jasmine M.

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inheritance

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// C++ Implementation to show that a derived class
// doesn’t inherit access to private data members.
// However, it does inherit a full parent object.
class A{
  public:
    int x;
  protected:
    int y;
  private:
    int z;
};
class B : public A{
    // x is public
    // y is protected
    // z is not accessible from B
};
class C : protected A{
    // x is protected
    // y is protected
    // z is not accessible from C
}; 
class D : private A{    // 'private' is default for classes
    // x is private
    // y is private
    // z is not accessible from D
};

Popularity 10/10 Helpfulness 1/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

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Contributed on Apr 15 2022

Sleepy Head

0 Answers Avg Quality 2/10

Why Inheritance?

Comment

class RegularPolygon {


  calculatePerimeter() {
    // code to compute perimeter
  }
}

Popularity 8/10 Helpfulness 1/10 Language swift

Source: Grepper

Tags: swift

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Contributed on Jun 16 2022

SAMER SAEID

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inheritance

Comment

class Parent {

   // methods
   // fields

   // ……
}

class Child extends Parent {

   // already supports the methods and fields in Parent class
   // additional features
}

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: techbeamers.com

Tags: inheritance inhe

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Contributed on Nov 23 2022

Sore Shark

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What is Inheritance?

Comment

Inheritance provides an object with the ability to acquire the fields and methods of another class, called base class. Inheritance provides reusability of code and can be used to add additional features to an existing class, without modifying it.

Sample class Mammal is shown below which has a constructor.Mammal Class

public class Mammal{  
 
 public Mammal()
 {
   System.out.println("Mammal created"); 
 }
  
}
Man class extends Mammal which has a default constructor. The sample code is shown below.Man class

public class Man extends Mammal{ 
 
 public Man()
 {  
   System.out.println("Man is created");  
 }  
}
Inheritance is tested by creating an instance of Man using default constructor. The sample code is shown to demonstrate the inheritance.TestInheritance Class

public class TestInheritance{
 
public static void main(String args[])
{  
   Man man = new Man();  
 }  
}

Popularity 9/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

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Contributed on May 21 2023

Sumit Rawal

0 Answers Avg Quality 2/10

@Inheritance

Comment

@Inheritance(strategy = InheritanceType.JOINED)
public class Personne {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)

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Contributed on Aug 06 2024

Noureddine ER-RAJY

0 Answers Avg Quality 2/10

What Is Inheritance?

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inheritance

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