58. Switch statement using a character

• 
  switch (grade) {
  case 'A': 
      System.out.println("The grade is A.");
      break;
  
  case 'B': 
      System.out.println("The grade is B.");
      break;
  
  case 'C': 
      System.out.println("The grade is C.");
      break;
  
  case 'D': 
      System.out.println("The grade is D.");
      break;
  
  case 'F': 
      System.out.println("The grade is F.");
      break;
  
  default:  
      System.out.println("The grade is invalid.");
  }