package javaIO;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

/**

* Created by lenovo on 2017/3/11.

*/

public class ByteBasedStream {

private static void copy() throws IOException {

//用字节流拷贝一个文件

FileInputStream fis=new FileInputStream("E:\\javaStudy\\src\\javaIO\\when you are old");

FileOutputStream fos=new FileOutputStream("E:\\javaStudy\\src\\javaIO\\when you are old_copy2");

byte[] buf=new byte[1024];

int len=0;

while ((len=fis.read(buf))!=-1){

fos.write(buf,0,len);

}

fis.close();

fos.close();

}

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

//创建字节输出流对象，用以操作文件

FileOutputStream fos = new FileOutputStream("E:\\javaStudy\\src\\javaIO\\aFile");

fos.write("byte based io".getBytes());

fos.close();

//创建字节读取流，与指定文件关联

FileInputStream fis = new FileInputStream("E:\\javaStudy\\src\\javaIO\\aFile");

//获得fis读取到的字节数来创建缓冲数组

byte[] buf=new byte[1024];

int len=0;

while((len=fis.read(buf))!=-1){

System.out.println(new String(buf,0,len));

}

fis.close();

//一个小demo，写在copy函数里了

copy();

}

}