Java -从文本文件打印unicode不会输出相应的UTF-8字符

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class UnicodePrinter {
    public static void main(String[] args) {
        try {
            FileInputStream fileInputStream = new FileInputStream("file.txt");
            InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

            String line;
            while ((line = bufferedReader.readLine()) != null) {
                System.out.println(line);
            }

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