字节流复制大数据

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

/*copy大文件*/

public class FilesCopyDemo {

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

// TODO Auto-generated method stub

FileInputStream fis = new FileInputStream("d:\\a.avi");

FileOutputStream fos = new FileOutputStream("e:\\b.avi");

byte fileBytes[] = new byte[1024];

int len =0;

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

fos.write(fileBytes, 0, len); //按1024个字节写数据

}

fos.close();

fis.close();

}

}