This is my code and I need to add a verification of input lo

This is my code and I need to add a verification of input loop to this so that the user only selects the cars that I have given them. This code is done through textpad and java.

import java.util.Scanner;

public class Worksheet_7
{ public static void main(String[]args)
   { Scanner Fred = new Scanner(System.in);
   System.out.println(\"Today we practice using switch statements \ \ \");
   char Ans;
   char DoMore = \'Y\';
   while(DoMore==\'Y\' || DoMore==\'y\')
   {
       // switch statement code goes here
   System.out.println(\"What kind of card do you drive?\");
   System.out.println(\"(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru\");
   String Word = Fred.next();
   Ans=Word.charAt(0);
   switch(Ans)
   {   case \'C\' : System.out.println(\"Chevy - the heartbeat of America\");
   System.out.println(\"Chevy is awesome\");
      break;
      case \'F\' : System.out.println(\"Ford tough\");
      System.out.println(\"Chevy is better\");
      break;
      case \'B\' : System.out.println(\"Buick - Luxury you can afford\");
      System.out.println(\"Chevy is better\");
      break;
      case \'M\' : System.out.println(\"Honda - Always dependable\");
      System.out.println(\"Chevy is better\");
      break;
      case \'T\' : System.out.println(\"Toyota - I have a toyota\");
      break;
      case \'S\' : System.out.println(\"Subaru - my friend has one\");
      break;
      case \'H\' : System.out.println(\"Need a better car....?\");
      System.out.println(\"Buy a Chevy\");
      break;
    } // switch
    System.out.println(\"Try again? (Y/N)\");
    Word = Fred.next();
    DoMore = Word.charAt(0);
} // end loop
    System.out.println(\"\ \ done for now..\");
} // end main
} // end class

Solution

import java.util.Scanner;

public class Worksheet_7
{ public static void main(String[]args)
     { Scanner Fred = new Scanner(System.in);
     System.out.println(\"Today we practice using switch statements \ \ \");
     char Ans;
     char DoMore = \'Y\';
     while(DoMore==\'Y\' || DoMore==\'y\')
     {
         // switch statement code goes here
     System.out.println(\"What kind of card do you drive?\");
     System.out.println(\"(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru\");
     String Word = Fred.next();
     Ans=Word.charAt(0);
     //VERFICATION CODE...
     while(true )
     {
         if(Ans== \'H\'||Ans== \'S\' ||Ans== \'T\' ||Ans== \'M\' ||Ans== \'B\' ||Ans== \'C\' ||Ans== \'F\')
         {
         break;
         }
     System.out.println(\"Error: Please enter the car that is in the list\");
     System.out.println(\"What kind of card do you drive?\");
     System.out.println(\"(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru\");
     Word = Fred.next();
     Ans=Word.charAt(0);
     }
     switch(Ans)
     {    case \'C\' : System.out.println(\"Chevy - the heartbeat of America\");
     System.out.println(\"Chevy is awesome\");
         break;
         case \'F\' : System.out.println(\"Ford tough\");
         System.out.println(\"Chevy is better\");
         break;
         case \'B\' : System.out.println(\"Buick - Luxury you can afford\");
         System.out.println(\"Chevy is better\");
         break;
         case \'M\' : System.out.println(\"Honda - Always dependable\");
         System.out.println(\"Chevy is better\");
         break;
         case \'T\' : System.out.println(\"Toyota - I have a toyota\");
         break;
         case \'S\' : System.out.println(\"Subaru - my friend has one\");
         break;
         case \'H\' : System.out.println(\"Need a better car....?\");
         System.out.println(\"Buy a Chevy\");
         break;
     } // switch
     System.out.println(\"Try again? (Y/N)\");
     Word = Fred.next();
     DoMore = Word.charAt(0);
} // end loop
     System.out.println(\"\ \ done for now..\");
} // end main
} // end class

OUTPUT:-

run:
Today we practice using switch statements

What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
F
Ford tough
Chevy is better
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
C
Chevy - the heartbeat of America
Chevy is awesome
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
B
Buick - Luxury you can afford
Chevy is better
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
M
Honda - Always dependable
Chevy is better
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
H
Need a better car....?
Buy a Chevy
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
T
Toyota - I have a toyota
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
S
Subaru - my friend has one
Try again? (Y/N)
Y
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
P
Error: Please enter the car that is in the list
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
G
Error: Please enter the car that is in the list
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
R
Error: Please enter the car that is in the list
What kind of card do you drive?
(F)ord, (C)hevy, (B)uick,(M)azda,(H)onda,(T)oyota,(S)ubaru
F
Ford tough
Chevy is better
Try again? (Y/N)
N

done for now..
BUILD SUCCESSFUL (total time: 59 seconds)