DataStream

import java.io.*;
class  DataStream
{
	public static void main(String[] args)throws IOException 
	{

		/*
		DataOutputStream dos = 
			new DataOutputStream(new FileOutputStream("data.txt"));

		dos.writeUTF("你好");
		dos.close();

		*/

		DataInputStream dis = 
			new DataInputStream(new FileInputStream("data.txt"));

		String s = dis.readUTF();

		System.out.println(s);

		dis.close();
	}
}