JAVA PROGRAM TO UNDERSTAND ABSTRACT METHODS AND CLASSES

-

 abstract class Animal {

  abstract void makeSound();


  public void eat() {

    System.out.println("I can eat.");

  }

}


class Dog extends Animal {


  // provide implementation of abstract method

  public void makeSound() {

    System.out.println("Bark bark");

  }

}


public class Main {

  public static void main(String[] args) {


    // create an object of Dog class

    Dog d1 = new Dog();


    d1.makeSound();

    d1.eat();

  }

}

Comments

Post a Comment

Popular posts from this blog

JAVA RECORD PROGRAM FOR FIBBONACCI SERIES

-
import java.io .*; public class FibonacciSeries {   public static void main(String args[]) {     int a, b, c, i, n;     n = 10;     a = b = 1;     System.out.print (a + " " + b);     for (i = 1; i <= n - 2; i++) {       c = a + b;       System.out.print (" ");       System.out.print (c);       a = b;       b = c;     }   } }
Read more

JAVA RECORD PROGRAM FOR AREA AND PERIMETER OF RECTANGLE

-
 // Java program to calculate  the area and perimeter of a rectangle using class concept import java.util.*; // Rectangle Class File class Rectangle {     // data members     int length, width;     // methods     //constructor to create Object     Rectangle(int length, int width) {         this. length = length;         this.width = width;     }     // prints the area of rectangle     public void area() {         int areaOfRectangle;         areaOfRectangle = this.length * this.width;         System.out.println("Area of rectangle with the given input is : " + areaOfRectangle);     }     // prints the perimeter of rectangle     public void perimeter() {         int  perimeterOfRectangle;         perimeterOfRectangle = 2 * (this...
Read more

JAVA RECORD PROGRAM FOR MATRIX MULTIPLICATION

-
 public class Example {    public static void main(String args[]) {       int n = 3;       int[][] a = { {5, 2, 3}, {2, 6, 3}, {6, 9, 1} };       int[][] b = { {2, 7, 5}, {1, 4, 3}, {1, 2, 1} };       int[][] c = new int[n][n];       System.out.println("Matrix A:");       for (int i = 0; i < n; i++) {          for (int j = 0; j < n; j++) {             System.out.print(a[i][j] + " ");          }          System.out.println();       }       System.out.println("Matrix B:");       for (int i = 0; i < n; i++) {          for (int j = 0; j < n; j++) {             System.out.print(b[i][j] + " ");          }          System.out.pr...
Read more