Using the switch statement, write a menu driven program:

To check and display whether a number input by the user is a composite number or not.
A number is said to be composite, if it has one or more than one factors excluding 1 and the number itself.
Example: 4, 6, 8, 9...

To find the smallest digit of an integer that is input:
Sample input: 6524
Sample output: Smallest digit is 2

For an incorrect choice, an appropriate error message should be displayed.

Java Programming Language (Article) (Program)

18

Program:

import java.util.Scanner;

public class RAnsariNumber
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.println("Type 1 for Composite Number");
        System.out.println("Type 2 for Smallest Digit");
        System.out.print("Enter your choice: ");
        int ch = in.nextInt();

        switch (ch) {
            case 1:
            System.out.print("Enter Number: ");
            int n = in.nextInt();
            int c = 0;
            for (int i = 1; i <= n; i++) {
                if (n % i == 0)
                    c++;
            }

            if (c > 2)
                System.out.println("Composite Number");
            else
                System.out.println("Not a Composite Number");
            break;

            case 2:
            System.out.print("Enter Number: ");
            int num = in.nextInt();
            int s = 10;
            while (num != 0) {
                int d = num % 10;
                if (d < s)
                    s = d;
                num /= 10;
            }
            System.out.println("Smallest digit is " + s);
            break;

            default:
            System.out.println("Wrong choice");
        }
    }
}

Output:

Type 1 for Composite Number
Type 2 for Smallest Digit
Enter your choice: 1
Enter Number: 9
Composite Number
Press any key to continue . . .


Type 1 for Composite Number
Type 2 for Smallest Digit
Enter your choice: 2
Enter Number: 6524
Smallest digit is 2
Press any key to continue . . .

This Particular section is dedicated to Programs only. If you want learn more about Java Programming Language. Then you can visit below links to get more depth on this subject.

Go to Program List

Related Program List

1186. Define a class named movieMagic with the following description:

Programs:

1187.
A special two-digit number is such that when the sum of its digits is added to the product of its digits, the result is equal to the original two-digit number.

Example: Consider the number 59.
Sum of digits = 5 + 9 = 14
Product of digits = 5 * 9 = 45
Sum of the sum of digits and product of digits = 14 + 45 = 59

Write a program to accept a two-digit number. Add the sum of its digits to the product of its digits. If the value is equal to the number input, then display the message "Special two—digit number" otherwise, display the message "Not a special two-digit number".

Programs:

1188.
Write a program to assign a full path and file name as given below. Using library functions, extract and output the file path, file name and file extension separately as shown.

Input
C:\Users\admin\Pictures\flower.jpg

Output
Path: C:\Users\admin\Pictures\
File name: flower
Extension: jpg

Programs:

1189.
Design a class to overload a function area( ) as follows:

double area (double a, double b, double c) with three double arguments, returns the area of a scalene triangle using the formula:
area = √(s(s-a)(s-b)(s-c))
where s = (a+b+c) / 2

double area (int a, int b, int height) with three integer arguments, returns the area of a trapezium using the formula:
area = (1/2)height(a + b)

double area (double diagonal1, double diagonal2) with two double arguments, returns the area of a rhombus using the formula:
area = 1/2(diagonal1 x diagonal2)

Programs:

1190.
Using the switch statement, write a menu driven program to calculate the maturity amount of a Bank Deposit.
The user is given the following options:

Term Deposit

Recurring Deposit

For option 1, accept principal (P), rate of interest(r) and time period in years(n). Calculate and output the maturity amount(A) receivable using the formula:

A = P[1 + r / 100]ⁿ

For option 2, accept Monthly Installment (P), rate of interest (r) and time period in months (n). Calculate and output the maturity amount (A) receivable using the formula:

A = P x n + P x (n(n+1) / 2) x r / 100 x 1 / 12

For an incorrect option, an appropriate error message should be displayed.

Programs:

1191.
Write a program to accept the year of graduation from school as an integer value from the user. Using the binary search technique on the sorted array of integers given below, output the message "Record exists" if the value input is located in the array. If not, output the message "Record does not exist".
Sample Input:

Programs:

1192.
Define a class called ParkingLot with the following description:

Instance variables/data members:
int vno — To store the vehicle number.
int hours — To store the number of hours the vehicle is parked in the parking lot.
double bill — To store the bill amount.

Member Methods:
void input() — To input and store the vno and hours.
void calculate() — To compute the parking charge at the rate of ₹3 for the first hour or part thereof, and ₹1.50 for each additional hour or part thereof.
void display() — To display the detail.

Write a main() method to create an object of the class and call the above methods.

Programs:

1193.
Write two separate programs to generate the following patterns using iteration (loop) statements:

(a)

*
* #
* # *
* # * #
* # * # *

(b)

5 4 3 2 1
5 4 3 2
5 4 3
5 4
5

Programs:

1194.
Write a program to input and store roll numbers, names and marks in 3 subjects of n number of students in five single dimensional arrays and display the remark based on average marks as given below:

Programs:

1195.
Design a class to overload a function Joystring( ) as follows:

Programs: