DataStream_操作基本类型数据的流对象

 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;

 public class Test {
     public static void main(String[] args) throws IOException {
         writeData();
         readData();
     }
     public static void readData() throws IOException {

         DataInputStream dis = new DataInputStream(new FileInputStream("F:\\IO\\data.txt"));

         String str = dis.readUTF();

         System.out.println(str);
     }

     public static void writeData() throws IOException {

         DataOutputStream dos = new DataOutputStream(new FileOutputStream("F:\\IO\\data.txt"));

         dos.writeUTF("你好");

         dos.close();
     }
 }