Java 操作基本数据类型的流

package io.p5.datastream;import java.io.DataInput;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;public class DataStreamDemo {//操作基本数据类型的public static void main(String[] args) throws IOException {writeData();readData();}private static void readData() throws IOException {DataInputStream dis=new DataInputStream(new FileInputStream("data.txt"));String str=dis.readUTF();System.out.println(str);}private static void writeData() throws IOException {DataOutputStream dos=new DataOutputStream( new FileOutputStream("data.txt"));dos.writeUTF("你好");//以utf-8修改版 写入dos.close();}}