Programming Inheritance

Programming Inheritance

• To program inheritance, you should already have a solid understanding of what inheritance in Object Oriented Programming (OOP) is.

How do you Define Inheritance?

Pseudocode

Pseudocode for a class created using inheritance (part 1)

Pseudocode for a class created using inheritance (part 2)

Pseudocode for a class created using inheritance

Java

//vehicle class created
public class Vehicle {
     //attributes created for the vehicle class
    private String manufacturer;
    private String make;
    private double cost;
 
     //constructor to create objects of type vehicle
     public Vehicle(String manufacturer, String make, double cost) {
        this.manufacturer = manufacturer;
        this.make = make;
        this.cost = cost;
     }
 
     //method to start the engine of the car
     public void turnEngineOn() {
        //code to turn the engine on
     }
      //method to stop the engine of the car
     public void turnEngineOff() {
        //code to turn the engine off
}
      //method to steer the car to the left
     public void steerLeft() {
        // code to steer the vehicle left
     }
      //method to steer the car to the right
     public void steerRight() {
        // code to steer the vehicle right
     }
}
 
 //Derived Class (Car)
//the Car class uses the keyword 'extends' to inherit from the Vehicle class
public class Car extends Vehicle {
    private boolean isInsured;
    private double engineCapacity;
 
     // Constructor to create objects of type Car
     public Car(String manufacturer, String make, double cost, boolean isInsured, double   engineCapacity) {
       //the super keyword is used to inherit the attributes from the base class
         super(manufacturer, make, cost);
        this.isInsured = isInsured;
        this.engineCapacity = engineCapacity;
     }
     //method to change gear 
     public void gearChange() {
        //code to change the gear of the car
     }
      //method to unlock the vehicle doors
     public void unlockDoors() {
        //code to unlock the doors of the car
     }
}

Python

#Base class (Vehicle)
#Vehicle class created
class Vehicle:
     #attributes created for the Vehicle class 
    def __init__(self, manufacturer, make, cost):
        self.manufacturer = manufacturer
        self.make = make
        self.cost = cost
 
      #method to start the engine of the car   
    def turn_engine_on(self):
        # Code to turn the engine on
 
      #method to stop the engine of the car
     def turn_engine_off(self):
        # Code to turn the engine off
 
       #method to steer the car to the left
     def steer_left(self):
        # Code to steer the vehicle left
 
       #method to steer the car to the right
     def steer_right(self):
        # Code to steer the vehicle right
 
#Derived Class (Car)
#the Car class uses the keyword parent class name in parenthesis to inherit from the Vehicle class
class Car(Vehicle):
     def __init__(self, manufacturer, make, cost, is_insured, engine_capacity):
         #the super keyword is used to inherit the attributes from the base class
         super().__init__(manufacturer, make, cost)
         self.is_insured = is_insured
         self.engine_capacity = engine_capacity
      #method to change gear
     def gear_change(self):
        # Code to change the gear of the car
 
       #method to steer the car to the right
     def unlock_doors(self):
        # Code to unlock the doors of the car