import java.text.*; 

public class averageAge6 
{ 
  public static void main(String[] argv) 
  { 
    int age1 = 19;
    int age2 = 21;
    int age3 = 31;
    double averageAge;

    averageAge = (age1 + age2 + age3) / 3.0; // 23.66666...

    System.out.print("The average of three ages is " );
    System.out.println(new DecimalFormat("#").format(averageAge)); 
  }
}