import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class InputStreamExample {
    public static void main(String[] args) {
        try {
            // 指定文件路径
            String filePath = "path/to/your/file.txt";

            // 创建FileInputStream对象
            InputStream inputStream = new FileInputStream(filePath);

            // 读取数据
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                // 处理读取的数据，例如写入到另一个地方
                // ...

                // 打印读取的字节数
                System.out.println("Read " + bytesRead + " bytes.");
            }

            // 关闭流
            inputStream.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}