// streams/Prime.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.util.stream.*;
import static java.util.stream.LongStream.*;

public class Prime {
 public static boolean isPrime(long n) {
 return rangeClosed(2, (long)Math.sqrt(n))
 .noneMatch(i -> n % i == 0);
 }
 public LongStream numbers() {
 return iterate(2, i -> i + 1)
 .filter(Prime::isPrime);
 }
 public static void main(String[] args) {
 new Prime().numbers()
 .limit(10)
 .forEach(n -> System.out.format("%d ", n));
 System.out.println();
 new Prime().numbers()
 .skip(90)
 .limit(10)
 .forEach(n -> System.out.format("%d ", n));
 }
}
/* Output:
2 3 5 7 11 13 17 19 23 29
467 479 487 491 499 503 509 521 523 541
*/