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.
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.
