something like this?

Code:
import java.io.Console;
public class Something {
  public static void main(String[] args) {
    Console console = System.console();
    String name = console.readLine("Enter name: ");
    while(true){ 
      System.out.println("Category:\n[A]Politics\n[B]Foods\n[C]Religion\n\n");
      String sLetter = console.readLine("Select Letter: ");
      char[] cLetter = sLetter.toCharArray();
      switch(cLetter[0]){
        case 'a': 
        //put here the "output"
        System.out.println("a chosen");
        break;
        case 'b': 
        //put here the "output"
        System.out.println("b chosen");
        break;
        //put here the "output"
        case 'c': 
        System.out.println("c chosen");
      }
      String exit = console.readLine("Do you want to continue?\n");
      if(exit.equals("No")){
        System.exit(0);
      }
    }
  }
}