public class ParamList 
{ 
  static double calcAverage(int a, int b) 
  { 
    double result = 0.0; 
    result = (a + b) / 2.0; 
    return result; 
  } // calcAverage 
  
  public static void main(String[] argv) 
  { 
    int x = 100; 
    int y = 200; 
    double z = calcAverage(x, y); 
    System.out.println(z); 
  } // main 
} // public class