Java Practical No.17.pdf

17.1) Develop a program to extend ‘dog’ from ‘animal’ to override ‘move()’ method using super keyword. PROGRAM: import java.util.*; class dog { String name; int age; Scanner s = new Scanner(System.in);

void move() { System.out.println("Enter Name = "); name = s.next();

System.out.println("Enter Age = "); age = s.nextInt(); } void dis() { System.out.println("Name of Dog = "+name); System.out.println("Age of Dog = "+age); } } class animal extends dog { String breed;

void move() { super.move(); System.out.println("Enter breed = "); breed = s.next(); } void put() { System.out.println("Breed of Dog = "+breed); } } class animalD { public static void main(String args[]) { animal a = new animal(); a.move(); a.dis(); a.put(); } }

OUTPUT:

17.2) Develop a program of class book with data members author, title, publisher & method show and class bookinfo having data members of price, stack, position & method show & display information. PROGRAM: import java.util.*; class book { String au,title; int price; Scanner s = new Scanner(System.in);

void show() { System.out.println("Enter Author name = "); au = s.next();

System.out.println("Enter Title = "); title = s.next();

System.out.println("Enter price = "); price = s.nextInt(); } void display() { System.out.println("Author name = "+au); System.out.println("Title name = "+title);

System.out.println("Price name = "+price); } } class bookinfo extends book { int price , stackP;

void show() { super.show(); System.out.println("Enter Price = "); price = s.nextInt();

System.out.println("Enter Stock Position = "); stackP = s.nextInt(); } void put() { System.out.println("Price = "+price); System.out.println("Stock Position = "+stackP); } }

class bookD { public static void main(String args[]) {

b.show(); b.display(); b.put(); } }

OUTPUT: