Breaking Input into Tokens Java

Scanning

Objects of type scanner are useful for breaking down formatted input into tokens and translating individual tokens according to their data type.

Breaking Input into Tokens

By default, a scanner uses white space to separate tokens.

First  we have create .txt file or we can use our existing .txt file.  

A program that reads the individual words in .txtand prints them out, one per line.

import java.io.*;

import java.util.Scanner;

import java.util.logging.Level;

import java.util.logging.Logger;

public class ScanXan {

   

    public static void main(String[] args) {

        Scanner s = null;

        try {

            s = new Scanner(new BufferedReader(new FileReader("D:\\doc.txt")));

            while (s.hasNext()) {

                System.out.println(s.next());

            }

        } catch (FileNotFoundException ex) {

            Logger.getLogger(ScanXan.class.getName()).log(Level.SEVERE, null, ex);

        } finally {

            if (s != null) {

                s.close();

            }

        }

    }

   

}

Output -