Urgent help reqd in string tokenizing

Question

hi all,
i want to count the number of commas in the screen,
ths is my code
import java.util.*;
class TokenizerTest
     public static void main(String[] args)
String str= new String("REMOVE_STR,01,6403,40,143,990,410,,,11,ATTN PAT COLEMAN,, ,,,N,,,,,,,,,,,NC,,,,,");
     StringTokenizer st= new StringTokenizer(str,",",false);
     int i=0;
     while(st.hasMoreTokens())
          System.out.println(st.nextToken()+" Val :"+i);
          i++;
     System.out.println("Value of i"+i);
System.out.println("Count is " +st.countTokens());     
}but its notgiving the proper count... those commas whcih are not separated by spaces orcharacter, it desn't count like" ,," it won't count theese commas it works fine when commas are separated by spaces or charachters.
what is the solution for this?.. plz help me its urgent
Thanx in advance
Deepali

Answer 1

countTokens() should have been called before the while loop.
so, System.out.println("Count is " +st.countTokens()); should be place before the while loop or create
a local int variable to store the count and use the variable in the
System.out.println("Count is " + count);
The reason why you're not getting the proper count is this:
    In the while loop..you use nextToken()..when this method is called..countToken() method count the total
    number of token left; therefore...after the while loop..countToken() will always return ZERO.
    you should use the String split(String regex) function, if you are using the jdsk 1.4 or higher.
public static void main(String[] args) {
    String str= new String("REMOVE_STR,01,6403,40,143,990,410,,,11,ATTN PAT COLEMAN,, ,,,N,,,,,,,,,,,NC,,,,,");
    String s[] = str.split(",");  // require jdk 1.4
    // NOTE:   the String "a,,b"      - two commas return
    //    s[0] = "a"    
    //    s[1] = "";    // empty string
    //    s[2] = "";    // empty string
    //    s[3] = "b";
    for (int i = 0; i < s.length; i++)
        System.out.println("Value of i = " + s);
System.out.println("Count is = " + (s.length - 1) );