switch statement

[s3a]

I do not need the last break; statement right? Anyways, my real question is: how do I modify the following code to take an input that is letters instead of numbers?

import java.util.Scanner;
public class test2

{
	public static void main (String [] args)
		
		{
			Scanner kb;
			kb = new Scanner(System.in);
			
			
			int x = kb.nextInt();
			
			switch(x)
			
			{
			case 1:
				System.out.print("One"); break;
			case 2:
				System.out.print("Two"); break;
			case 3:
				System.out.print("Three"); break;
			default:
				System.out.print("Not 1,2 or 3"); break;
			}
}

Any input would be greatly appreciated!
Thanks in advance!