如何在java中读取由C++程序创建的文件？

import java.io.*;

public class ReadCppFile {
    public static void main(String[] args) {
        File file = new File("example.txt");
        try {
            FileInputStream fis = new FileInputStream(file);
            byte[] buffer = new byte[(int) file.length()];
            fis.read(buffer);
            String content = new String(buffer, "UTF-8");
            System.out.println(content);
            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}