Java I/O How to - Use StreamTokenizer to count words and numbers in a file

Question

We would like to know how to use StreamTokenizer to count words and numbers in a file.

Answer

// w w w.  j  a v a  2s. co  m
import java.io.FileReader;
import java.io.StreamTokenizer;

public class Main {
  public static void main(String[] args) throws Exception {
    int wordCount = 0, numberCount = 0;

    StreamTokenizer sTokenizer = new StreamTokenizer(new FileReader("yourFile.txt"));

    while (sTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
      if (sTokenizer.ttype == StreamTokenizer.TT_WORD)
        wordCount++;
      else if (sTokenizer.ttype == StreamTokenizer.TT_NUMBER)
        numberCount++;
    }

    System.out.println("Number of words in file: " + wordCount);
    System.out.println("Number of numbers in file: " + numberCount);

  }
}

The code above generates the following result.