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import java.util.Scanner; public class PrimeChecker { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print("Enter a number to check if it's prime: "); int number = scanner.nextInt(); if (isPrime(number)) { System.out.println(number + " is a prime number."); } else { System.out.println(number + " is not a prime number."); } } // Function to check if a number is prime public static boolean isPrime(int num) { if (num <= 1) { return false; } for (int i = 2; i <= Math.sqrt(num); i++) { if (num % i == 0) { return false; } } return true; } }
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