Java获取大型输入流的大小时出现内存不足

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;

public class StreamSizeCalculator {
    public static void main(String[] args) {
        String filePath = "path/to/input/file";
        int bufferSize = 8192; // 适当的缓冲区大小

        try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(filePath))) {
            byte[] buffer = new byte[bufferSize];
            int bytesRead;
            long totalSize = 0;

            while ((bytesRead = bis.read(buffer)) != -1) {
                totalSize += bytesRead;
            }

            System.out.println("Input stream size: " + totalSize + " bytes");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}