In this code sample, you will learn how to print prime numbers from 1 to N using java. The program will read the N
value, entered by the user, then check whether a number is prime or not. The program will print all print numbers between 1 and N to the output.
What is a prime number?
A prime number is divided by 1 and itself, without a reminder.
1,2,3,4,7,11,12....
Get prime numbers between two integers using Java
The program will run an increment loop form 1 to the number (N) entered by the user; if the number cannot be divided by either one of itself, it’s a prime number, otherwise, it’s not.
import java.util. * ; class Main { public static void main(String args[]) { int loop, n; System.out.print("Enter a value of N: "); Scanner scanner = new Scanner(System.in ); n = scanner.nextInt(); for (int i = 1; i < n; i++) { if (i % 2 != 0) { System.out.println(i); } } scanner.close(); } }
Output
1
3
5
7
9
11
13
15
17
19

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