import java.io.DataInputStream;

import java.io.DataOutput;

import java.io.DataOutputStream;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

public class Test07 {

public static void main(String[] args) throws FileNotFoundException {

//为什么需要首先定义一个null

DataInputStream dis=null;

DataOutputStream dos=null;

FileInputStream fis=new FileInputStream("D:\\新建文件夹\\IMG_4013.JPG");

dis=new DataInputStream(fis);

FileOutputStream fos=new FileOutputStream("D:\\新建文件夹\\aaa.JPG");

dos=new DataOutputStream(fos);

try {

int temp=dis.read();

while(temp!=-1){

dos.write(temp);

temp=dis.read();

}

System.out.println("录入成功");

fis.close();

fos.close();

} catch (IOException e) {

e.printStackTrace();

}finally{

try {

if (dis!=null) {

dis.close();

}

if (dos!=null) {

dos.close();

}

} catch (Exception e2) {

e2.printStackTrace();

}

}

}

}