// Code to demonstrate the method "call stack"
// (not necessarily good style, due to repetition)

class DreamCode {
  
  public static void main(String[] argh) {
    call("", "main", "f");
      f();
    back("", "main", "f");
  }
  
  public static void f() {
    call("\t", "f", "g");
      g();
    back("\t", "f", "g");
  }
  
  public static void g() {
    call("\t\t", "g", "h");
      h();
    back("\t\t", "g", "h");
  }
  
  public static void h() {
    System.out.println("\t\t\tFinally entered h.");
        System.out.println("\t\t\t...");
    System.out.println("\t\t\tNow leaving h.");
  }
  
  // ---------------------- utilities
  
  public static void call(String prefix, String outer, String inner) {
    System.out.println(prefix + outer + " calls " + inner + " ...");
  }
  
  public static void back(String prefix, String outer, String inner) {
    System.out.println(prefix + "... back to " + outer + " (returned from " + inner + ").");
  }
  
}