// CS 101 class example
// demonstrates methods and parameters

public class CallTest {
  
  public static void main(String[] args) {
    a();
    a();
  }
  public static void a() {
    b("Peter");
    b("Anna");
  }
  public static void b(String x) {
    System.out.println("hi " + x + "!");
    System.out.println("bye " + x + "!");
  }
}