for (int i = 1; i <= 3; i++) {
   for (int j = 1; j <= i; j++) {
      System.out.println("coffee");
   }
}


i = 1;
while (i <= 3) {
   j = 1;
   while (j <= i) {
     System.out.println("coffee");
	 j++;
   }
   i++;
}