Java program to list prime numbers.

Source:

public class PrimeNumbers {
 
   public static void main(String args[]) {
      for(int x = 1; x < 50; x++) {
         if(isPrime(x)){
            System.out.println(x);
         }
      }
   }
 
   public static boolean isPrime(int x) {
      if (x < 2)
         return false; 
      for(int i=2; i<x; i++) {
         if(x % i == 0) {
            return false; 
         }
      }
      return true; 
   }
}

Output:

   $ java PrimeNumbers 
   2
   3
   5
   7
   11
   13
   17
   19
   23
   29
   31
   37
   41
   43
   47