eclipse怎么读取文件

<code class="java">import java.io.FileInputStream;
import java.io.IOException;

public class ReadFileWithFileInputStream {

    public static void main(String[] args) {
        String filename = "my_file.txt";

        try {
            // 创建 FileInputStream 对象
            FileInputStream in = new FileInputStream(filename);

            // 读取文件内容并打印到控制台
            int ch;
            while ((ch = in.read()) != -1) {
                System.out.print((char) ch);
            }

            // 关闭文件流
            in.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}</code>

<code class="java">import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class ReadFileWithScanner {

    public static void main(String[] args) {
        String filename = "my_file.txt";

        try {
            // 创建 Scanner 对象
            Scanner scanner = new Scanner(new File(filename));

            // 读取文件内容并打印到控制台
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                System.out.println(line);
            }

            // 关闭文件流
            scanner.close();

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}</code>