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
ttypemethod of StreamTokenizer. If the type is equal toTT_EOL(end of line) a counter is increased,
as described in the code snippet below.
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | package com.javacodegeeks.snippets.core;import java.io.BufferedReader;import java.io.FileReader;import java.io.StreamTokenizer;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); tokenizer.eolIsSignificant(true); int cnt = 1; while (tokenizer.nextToken() != StreamTokenizer.TT_EOF) {switch (tokenizer.ttype) { case StreamTokenizer.TT_EOL: ++cnt;} } System.out.println("The file has " + cnt + " lines"); fileReader.close(); }} |
Output:
The file has 432 lines
This was an example of how to use the eolIsSignificant(boolean flag) method in a tokenizer in Java.
