1...100之间质数

public class prime {
 public static void main(String[] args) {
  int j;
  for (int i = 2; i <= 100; i++) {
  j = 2;
  while (i % j != 0)
  j++; 
  if (j == i)
  System.out.println(i); 
 }
 }
 }