StringTokenizer countTokens() Method in Java with Examples

Last Updated : 28 Jan, 2019
The countTokens() method of StringTokenizer class calculate the number of times that this tokenizer's nextToken method can be called before the method generates any further exception. Note: The current position is not advanced during the process. Syntax: 
public int countTokens()
Parameters: The method does not take any parameters. Return Value: The method is used to return the number of tokens remaining in the string using the current delimiter set. Below programs illustrate the working of countTokens() Method of StringTokenizer: Example 1: Java 
// Java code to illustrate countTokens() method

import java.util.*;

public class StringTokenizer_Demo1 {
    public static void main(String args[])
    {

        // Creating a StringTokenizer
        StringTokenizer str_arr
            = new StringTokenizer(
                "Lets practice at GeeksforGeeks");

        // Counting the tokens
        int count = str_arr.countTokens();
        System.out.println("Total number of Tokens: "
                           + count);

        // Print the tokens
        for (int i = 0; i < count; i++)
            System.out.println("token at [" + i + "] : "
                               + str_arr.nextToken());
    }
}
Output: 
Total number of Tokens: 4
token at [0] : Lets
token at [1] : practice
token at [2] : at
token at [3] : GeeksforGeeks
Example 2: Java 
// Java code to illustrate countTokens() method

import java.util.*;

public class StringTokenizer_Demo2 {
    public static void main(String args[])
    {

        // Creating a StringTokenizer
        StringTokenizer str_arr
            = new StringTokenizer(
                "Welcome to GeeksforGeeks");

        // Counting the tokens
        int count = str_arr.countTokens();
        System.out.println("Total number of Tokens: "
                           + count);

        // Print the tokens
        for (int i = 0; i < count; i++)
            System.out.println("token at [" + i + "] : "
                               + str_arr.nextToken());
    }
}
Output: 
Total number of Tokens: 3
token at [0] : Welcome
token at [1] : to
token at [2] : GeeksforGeeks
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