package bianchengti;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;/* * 复制一个文件 */public class FileCopy {    public static void main(String[] args) throws IOException {        // TODO Auto-generated method stub        FileInputStream fis = new FileInputStream("e:/a.txt");                FileOutputStream fos =new FileOutputStream("e:/b.txt");                byte[] buff = new byte[256];                int len = 0;                while((len = fis.read(buff))>0) {            fos.write(buff,0,len);        }        System.out.println("复制完成");        fis.close();        fos.close();            }}