Java从命令行参数读取并打印文件

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

public class ReadFileFromCommandLine {
    public static void main(String[] args) {
        if (args.length < 1) {
            System.out.println("请提供文件路径作为命令行参数");
            return;
        }

        String filePath = args[0];
        File file = new File(filePath);

        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            System.out.println("读取文件出错：" + e.getMessage());
        }
    }
}