Java File Size with Files.size()

Files class have the Files.size() method to determine the size of the file. This is the most recent API and it is recommended for new Java applications.

Java file size with Files

The code example determines the file size using the Files' size() method.

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class JavaFileSizeExample {

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

        String fileName = "src/main/resources/words.txt";

        Path filePath = Paths.get(fileName);
        long fileSize = Files.size(filePath);        

        System.out.format("The size of the file: %d bytes", fileSize);
    }
}

Output:

The size of the file: 200 bytes