Java Program To Print All Prime Numbers From 1 to N

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import java.util.Scanner;

public class JavaRrintPrimeNumbers {

	// method to check number is prime or not
	static boolean isPrime(int num) {
		boolean flag = true;
		for (int i = 2; i <= (num / 2); i++) {
			if (num % i == 0) {
				flag = false;
				break;
			}
		}
		return flag;
	}

	public static void main(String[] args) {
		int n;
		Scanner scanner = new Scanner(System.in);

		System.out.print("Enter the value of N: ");
		n = scanner.nextInt();

		for (int loop = 2; loop <= n; loop++) {
			if (isPrime(loop) == true)
				System.out.print(loop + " ");
		}
	}
}
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