Как прочитать текстовый файл на java?

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import java.nio.file.Files;
import java.nio.file.Paths;


class Main {
    public static void main(String[] args) throws Exception {
        String content = Files.lines(Paths.get("data.txt")).reduce("", String::concat);
        System.out.println(content);
    }
}

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import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class ReadFile {
    public static void main(String[] args) {
        BufferedReader reader = null;

        try {
            reader = new BufferedReader(new FileReader("file.txt"));
            String line = null;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (reader != null) {
                    reader.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

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try (BufferedReader reader = new BufferedReader(new FileReader("file.txt"))) {
    String line = null;
    while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }
} catch (IOException e) {
    e.printStackTrace();
}