Read a specific line from a file: Difference between revisions

<syntaxhighlight>

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

public final class ReadSpecificLineFromFile {

public static void main(String[] aArgs) throws IOException {

String fileName = "C:/Users/psnow/Desktop/input.txt";

Path filePath = Path.of(fileName);

String seventhLine = Files.lines(filePath).skip(6).findFirst().orElse(ERROR_TOO_FEW_LINES);

String messageToUser = seventhLine.isBlank() ? ERROR_EMPTY_LINE : seventhLine;

System.out.println(messageToUser);

}

private static final String ERROR_TOO_FEW_LINES = "File has less than 7 lines";

private static final String ERROR_EMPTY_LINE = "Line 7 is empty";

}

</syntaxhighlight>

{{ out }}

<pre>

Either line 7 of the file or the appropriate error message.

</pre>