在控制台上打印取决于文本文件中的内容

with open('filename.txt', 'r') as file:
    content = file.read()
    print(content)

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

public class FilePrinter {
    public static void main(String[] args) {
        try (BufferedReader br = new BufferedReader(new FileReader("filename.txt"))) {
            String line;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

using System;
using System.IO;

class FilePrinter {
    static void Main() {
        string[] lines = File.ReadAllLines("filename.txt");
        foreach (string line in lines) {
            Console.WriteLine(line);
        }
    }
}