The Java Program: Count.java

  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 }