import java.util.Scanner;

public class TheStringMenu
{
    private String input;
    private Scanner console;
	
	public TheStringMenu()
	{
	    console = new Scanner(System.in);
		System.out.println("Give me your String:");
		input = console.nextLine();
	}
    public void go(){
        
        int choice = 0;
        while(choice != 4)
        {
          menu();
          choice = console.nextInt();
          console.nextLine();
          switch(choice)
          {
              case 1:
                 findLetter();
                 break;
              case 2:
                  countWords();
                  break;
               case 3:
                  changeWord();
                  break;
               case 4: 
                 System.out.println("Goodbye");
                 break;
               default:
                  System.out.println("That is not a choice, try again.");
           }
       }
    }
    public void menu()
    {
       System.out.println("Press 1 to count the occurrence of a particular letter.");
       System.out.println("Press 2 to count the total words in your input sentance.");
       System.out.println("Press 3 to change your input sentance.");
       System.out.println("Press 4 to exit.");
       System.out.println("What do you want to do?");
   }
    public void findLetter()
    {
        System.out.println("What letter do you want to count?");
        String let = console.nextLine();
        char letter = let.charAt(0);
        int find = -1;
        int count=0;
        do{
            find = input.indexOf(letter, find+1);
            if(find!=-1) count++;
        }while(find!=-1);
      System.out.println("\n****The letter " + letter + " was found " + count + " times.\n\n");
   
    }
    public void countWords()
    {
        int find = -1;
        int count=0;
        do{
            find = input.indexOf(" ", find+1);
            if(find!=-1){ 
                 count++;
                 while(input.charAt(find+1) == ' ')
                     find++;
            }
     }while(find!=-1);
     count++;
      System.out.println("\n****There are " + count + " words in the input\n\n");
   }
  
    public void changeWord()
    {
        System.out.println("What is your new input sentance?");
        input = console.nextLine();
        System.out.println("****Your input sentance has been changed to \"" + input + "\"\n\n");
    }
    
 
	
}