Computer Applications
Write a program to define class with the following specifications:
Class name — Number
Data members/ Instance variables:
- int n — to hold an integer number
Member methods:
- void input() — to accept an integer number in n
- void display() — to display the integer number input in n
Now, inherit class Number to another class Check that is defined with the following specifications:
Class name — Check
Data members/ Instance variables:
- int fact
- int revnum
Member methods:
- void find() — to find and print factorial of the number used in base class
- void palindrome() — to check and print whether the number used in base class is a palindrome number or not
[A number is said to be palindrome if it appears the same after reversing its digits. e.g., 414, 333, 515, etc.]
Java
Encapsulation & Inheritance in Java
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Answer
import java.util.Scanner;
public class Number
{
protected int n;
public void input() {
Scanner in = new Scanner(System.in);
System.out.print("Enter the number: ");
n = in.nextInt();
}
public void display() {
System.out.print("Number = " + n);
}
}public class Check extends Number
{
private int fact;
private int revnum;
public void find() {
fact = 1;
for (int i = 2; i <= n; i++)
fact *= i;
System.out.println("Factorial of " + n + " = " + fact);
}
public void palindrome() {
revnum = 0;
int t = n;
while (t != 0) {
int digit = t % 10;
revnum = revnum * 10 + digit;
t /= 10;
}
if (n == revnum)
System.out.println(n + " is Palindrome number");
else
System.out.println(n + " is not Palindrome number");
}
public static void main(String args[]) {
Check obj = new Check();
obj.input();
obj.find();
obj.palindrome();
}
}Variable Description Table
Program Explanation
Output
![BlueJ output of Write a program to define class with the following specifications: Class name — Number Data members/ Instance variables: (a) int n — to hold an integer number Member methods: (b) void input() — to accept an integer number in n (c) void display() — to display the integer number input in n Now, inherit class Number to another class Check that is defined with the following specifications: Class name — Check Data members/ Instance variables: (d) int fact (e) int revnum Member methods: (f) void find() — to find and print factorial of the number used in base class (g) void palindrome() — to check and print whether the number used in base class is a palindrome number or not [A number is said to be palindrome if it appears the same after reversing its digits. e.g., 414, 333, 515, etc.]](https://cdn1.knowledgeboat.com/img/apc10/chap_8-p7.webp "BlueJ output of Write a program to define class with the following specifications: Class name — Number Data members/ Instance variables: (a) int n — to hold an integer number Member methods: (b) void input() — to accept an integer number in n (c) void display() — to display the integer number input in n Now, inherit class Number to another class Check that is defined with the following specifications: Class name — Check Data members/ Instance variables: (d) int fact (e) int revnum Member methods: (f) void find() — to find and print factorial of the number used in base class (g) void palindrome() — to check and print whether the number used in base class is a palindrome number or not [A number is said to be palindrome if it appears the same after reversing its digits. e.g., 414, 333, 515, etc.]")
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