Set eolIsSignificant example

In this example we shall show you how to use the eolIsSignificant(boolean flag) method of a StreamTokenizer to determine whether or not ends of line are treated as tokens. To use eolIsSignificant(boolean flag) method one should perform the following steps:

  • Create a new FileReader.
  • Create a new BufferedReader using the fileReader.
  • Create a new StreamTokenizer that parses the given bufferedReader.
  • Use eolIsSignificant(boolean flag) API method of StreamTokenizer that determines whether or not ends of line are treated as tokens.
  • Iterate over the tokens of the tokenizer. For every token, check the type of the token, using ttype method of StreamTokenizer. If the type is equal to TT_EOL (end of line) a counter is increased,

as described in the code snippet below.

package com.javacodegeeks.snippets.core;


class Main {

    public static void main(String args[]) throws Exception {
  FileReader fileReader = new FileReader("C:/Users/nikos7/Desktop/output.txt");
  BufferedReader buffReader = new BufferedReader(fileReader);
  StreamTokenizer tokenizer = new StreamTokenizer(buffReader);
  int cnt = 1;
  while (tokenizer.nextToken() != StreamTokenizer.TT_EOF) {
switch (tokenizer.ttype) {
    case StreamTokenizer.TT_EOL:
  System.out.println("The file has " + cnt + " lines");


The file has 432 lines

This was an example of how to use the eolIsSignificant(boolean flag) method in a tokenizer 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.
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