PrimeNumberRange.java

// Write a program to find out series of prime numbers from a given range, where
// the range is entered by user

import java.util.Scanner;

public class PrimeNumberRange {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the starting number of the range: ");
        int start = sc.nextInt();
        System.out.print("Enter the ending number of the range: ");
        int end = sc.nextInt();
        
        System.out.println("Prime numbers in the given range are:");
        for (int i = start; i <= end; i++) {
            if (isPrime(i)) {
                System.out.println(i);
            }
        }
    }
    
    public static boolean isPrime(int number) {
        if (number <= 1) {
            return false;
        } else {
            for (int i = 2; i <= Math.sqrt(number); i++) {
                if (number % i == 0) {
                    return false;
                }
            }
            return true;
        }
    }
}