IO流(操作基本数据类型的流对象DataStream)

package com.yyq;
import java.io.*;
/*
* DataInputStream 和 DataOutputStream
* 专门操作数据的（基本数据类型）
* 为什么数据显示不清楚，因为记事本显示的是字符
*/
public class DataStreamDemo {

public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
//writeData();
//readData();
writeUTF();
}
public static void readData() throws IOException{
DataInputStream dis = new DataInputStream(new FileInputStream("data.txt"));
System.out.println(dis.readInt());
System.out.println(dis.readBoolean());
}
public static void writeUTF() throws IOException{
DataOutputStream dos = new DataOutputStream(new FileOutputStream("utfdata.txt"));
dos.writeUTF("你好");
dos.flush();
dos.close();
}
public static void writeData() throws IOException{
DataOutputStream dos = new DataOutputStream(new FileOutputStream("data.txt"));
dos.writeInt(234);
dos.writeBoolean(true);
dos.writeDouble(123.123);
dos.close();
}

}