using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        string src1 = "The fat cat walked on the wall.";

StringTokenizer st = new StringTokenizer(src1,""); 

//If an empty delimiter is given, automatically uses " " (space).

while(st.HasMoreTokens())

{

Console.WriteLine(st.NextToken());

}

string src2 = "Hello World!";

st.NewSource(src2);

while(st.HasMoreTokens())

{

Console.WriteLine(st.NextToken());

}

    }

}