Write a Java Program to find the Prime number.

Q.11 Write a Java Program to find the Prime number.

Solution  :- 

import java.util.Scanner;

public class Star {
public static void main(String[] args) {
// Create a Scanner object for input
Scanner scanner = new Scanner(System.in);

// Prompt the user to enter a number
System.out.print(“Enter a number to check if it is prime: “);
int number = scanner.nextInt();

// Variable to track if the number is prime
boolean isPrime = true;

// Prime number check
if (number <= 1) {
isPrime = false; // Numbers less than or equal to 1 are not prime
} else {
for (int i = 2; i <= Math.sqrt(number); i++) {
if (number % i == 0) {
isPrime = false; // Number is divisible by i, so not prime
break;
}
}
}

// Output the result
if (isPrime) {
System.out.println(number + ” is a prime number.”);
} else {
System.out.println(number + ” is not a prime number.”);
}

// Close the scanner
scanner.close();
}
}

Output :-