@@ -0,0 +1,196 @@
+// http://codingbat.com/prob/p101409%0A%0Apublic int count7(int n) %7B%0A  if (n == 0) %7B%0A    return 0;%0A  %7D%0A  %0A  if (n %25 10 == 7) %7B%0A    return count7(n/10) + 1;%0A  %7D%0A  else %7B%0A    return count7(n/10);%0A  %7D%0A%7D%0A

Create count7.java