StringReader example

With this example we are going to demonstrate how to use a StringReader. The StringReader is a character stream whose source is a string. In short, to use a StringReader you should:

  • Create a new StringReader with a specified String.
  • Create a new StreamTokenizer using the reader.
  • Iterate over the tokens of the tokenizer, and for every token if it is a word increase the value of a counter. In this way we can count the words of the String using the tokenizer.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;


public class Main {

    public static void main(String[] args) throws Exception {

  StringReader strReader = new StringReader("Java Code Geeks is awsome!");

  int wc = 0;

  StreamTokenizer tokenizer = new StreamTokenizer(strReader);

  while (tokenizer.nextToken() != StreamTokenizer.TT_EOF) {

if (tokenizer.ttype == StreamTokenizer.TT_WORD) {

  System.out.println("Word count in this string: " + wc);


Word count in this string: 5

This was an example of how to use a StringReader in Java.

Byron Kiourtzoglou

Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments
Back to top button