1 // Count.java -- count number of 'a's in 1st command line argument 2 3 class Count { 4 5 public static void main (String args[]) { 6 String s = args[0]; 7 int count = 0; 8 for (int i=0; i<s.length(); i++) { 9 if (str.charAt(i) == 'a') count++ 10 } 11 } 12 13 }