The string version of a scanner.nextInt

Question

is it possible to use a scanner.nextInt for string's?
I want to filter out a lettercode
input :
23 54 64 34 23 VV
If this is the input, than i want my program to know that there is a VV in it.
Hopefully you understand what I mean.

Answer 1

So, here's some more to the program.
First of all, I introduced accessor specifiers, public, private. There's another one, protected - and a 'hidden' one, package private. You may want to read about accessors. Find info in the Java tutorial, especially
http://java.sun.com/docs/books/tutorial/java/javaOO/accesscontrol.html
Now, I also generalized the amount of tokens expected from the user. You are now free of the restriction that the user must enter exactly four tokens. You'll also see an if condition that aborts the demo() method if no value has been entered. All this is a better programming practice, because it makes your program more robust against unexpected input. Robustness is an important criterion in programming.
I leave you with the improved version. Keep learning, and don't hesitate to ask further question! Thanks for dropping by.
--------------------- New version -------------------------
package p3;
import java.util.Scanner;
public class Testfile
    Scanner scanner;
    String  data;
    String  lettercode;
    int     newvalue;
    int     sum;
    public static void main (String [] args)
        new Testfile ().demo ();
    private void demo ()
        int nTokens         = 0;
        int iTokenChoice    = 0;
        // Get data from user
        System.out.println ("enter your data");
        Scanner scanner = new Scanner (System.in);
        String entireInput = scanner.nextLine ();
        // Extract tokens. Last token must be one of three possibilities,
        // "AA", "BB" or "CC"
        String [] tokens = entireInput.split (" ");
        nTokens          = tokens.length;
        if (nTokens >= 1)
            iTokenChoice     = nTokens - 1;
            String letterCode = tokens [3];
            if ("AA".equals (letterCode))
                programA (tokens);
            else if ("BB".equals (letterCode))
                programB (tokens);
            else
                programC (tokens);
    private void programA (String [] tokens)
        sum = GetSum (tokens);
        System.out.println ("The sum calculated by programA is " + sum);
    private void programB (String [] tokens)
    private void programC (String [] tokens)
    private int GetSum (String [] tokens)
        int     iToken      = 0;
        int     nTokens     = 0;
        String  temp        = null;
        int     ti          = 0;
        int     ret         = 0;
        nTokens = tokens.length - 1;
        ret     = 0;
        if (nTokens >= 1)
            for (iToken = 0; iToken < nTokens; iToken ++)
                temp    = tokens [iToken];
                ti      = Integer.parseInt (temp);
                ret     = ret + ti;
        return ret;
}Here's the output from a few example sessions:
Run 1. Just hit ENTER
enter your data
Run 2.: Entered no value, then AA
enter your data
AA
The sum calculated by programA is 0
Run 3.: Entered 1 value, then AA
enter your data
1 AA
The sum calculated by programA is 1
Run 4.: Entered 2 values, then AA
enter your data
1 34 AA
The sum calculated by programA is 35
While with the old version I got a java.lang.ArrayIndexOutOfBoundsException, if I entered not enough values or programC would have always executed if I entered too many values:
enter your data
1 2 AA
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 3
     at p3.Testfile.demo(Testfile.java:39)
     at p3.Testfile.main(Testfile.java:19)
Now a question for you to think about:
In the GetSum method I wrote the statement:
nTokens = tokens.length - 1;What would happen if I had written:
nTokens = tokens.length;Try and test!