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java abstraction simple example

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DM Lesar answered on June 22, 2020 Popularity 7/10 Helpfulness 2/10

answer java abstraction simple example

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java abstraction simple example

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java abstraction simple example

// ***** abstraction problem solved ********

abstract class shape{  // abstract class
	double a, b;
	shape(double a, double b){ // abstract class constructor
		this.a = a;
		this.b = b;
	}
	abstract void area();  // abstract class Method
}

class triangle extends shape{
	//a,b, area();  // Already abstract class property inheritance
	triangle(double a, double b){  // triangle constructor 
		super(a,b);  // super class used to code re-usability 
	}
	void area() {  // abstract method over-right to only void method
		double result = 0.5 * a * b;   // triangle formula
		System.out.println("Triangle area: " + result);
	}
}

class rectangle extends shape{
	//a,b, area(); // Already abstract class property inheritance
	rectangle(double a, double b){ // rectangle constructor 
		super(a,b); // super class used to code re-usability
	}
	void area() {
		double result = a * b; // rectangle formula
		System.out.println("Rectangle area: " + result);
	}
}


class circle extends shape{
	//a,b, area(); // Already abstract class property inheritance
	circle(double r){ // circle constructor but circle 1 parameter
		super(r,r);  // super class used to code re-usability but 2 parameter constructor 
	}
	void area() {
		double result = Math.PI * a * b; // circle formula
		System.out.println("Circle area: " + result);
	}
}
public class main{
	public static void main(String[] args) {
		shape obj;  // abstract class reference variable create
		
		obj = new rectangle(12, 34); // shape class reference variable to rectangle class 
		obj.area(); // rectangle class shape class abstract area() method over-right to rectangle class 
		
		obj = new triangle(12, 34); // shape class reference variable to triangle class
		obj.area(); // rectangle class shape class abstract area() method over-right to triangle class
		
		obj = new circle(12); // shape class reference variable to circle class
		obj.area(); // rectangle class shape class abstract area() method over-right to circle class
	}
}

Popularity 7/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: abstraction java

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Contributed on Mar 29 2023

DM Lesar

0 Answers Avg Quality 2/10

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abstraction in java

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Abstraction is nothing but the quality of dealing with ideas rather than 
events. It basically deals with hiding the internal details and showing 
the essential things to the user.

Popularity 10/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: abstraction abst

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Contributed on Jun 22 2020

Vishal

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Java Abstraction

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abstract class Animal {
  public abstract void animalSound();
  public void sleep() {
    System.out.println("Zzz");
  }
}

Popularity 10/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: abstraction abst

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Contributed on May 23 2022

naly moslih

0 Answers Avg Quality 2/10

java abstraction simple example

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