import java.io.*;
public class CharCodingDemo {

    public static void main(String[] args) throws IOException {
        FileOutputStream fos = new FileOutputStream(new File("chinese.txt"));
        OutputStreamWriter os = new OutputStreamWriter(fos,"utf-8");
        String sentence = "你好嗎?";
        os.write(sentence);
        os.flush();

        FileInputStream fis =new FileInputStream("chinese.txt");
        InputStreamReader isr = new InputStreamReader(fis,"utf-8");
        BufferedReader br =new BufferedReader(isr);
        System.out.println(br.readLine());
    }
}