Error whilst using StringTokenizer on text file with multiple lines

Question

I\'m trying to read a text file and split the words individually using string tokenizer utility in java.

The text file looks like this;

a 2000

4  
b         


        

Answer 1

You need to use hasMoreTokens() method. Also addressed various coding standard issues in your code as pointed out by JB Nizet

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.StringTokenizer;

public class TestStringTokenizer {

    /**
     * @param args
     * @throws IOException 
     */
    public static void main(String[] args) throws IOException {
        String fileSpecified = args[0];

        fileSpecified = fileSpecified.concat(".txt");
        String line;
        System.out.println ("file Specified = " + fileSpecified);

        ArrayList  words = new ArrayList ();

        BufferedReader br =  new BufferedReader (new FileReader (fileSpecified));
        try{
            while ((line  = br.readLine()) != null) {
                StringTokenizer token = new StringTokenizer (line);
                while(token.hasMoreTokens())
                    words.add(token.nextToken());
            }
        } catch (IOException e) {
            System.out.println (e.getMessage());
            e.printStackTrace();
        } finally {
            br.close();
        }

        for (int i = 0; i < words.size(); i++) {
            System.out.println ("words = " + words.get(i));
        }
    }
}