IO流文件复制

代码说明：

import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintStream; public class FileStreamDemo { public static void main(String[] args) { writeDate(); } private static void copy() { byte[] b= new byte[1000]; FileInputStream fs=null; FileOutputStream fo=null; try { fs = new FileInputStream("e:1.qsv"); fo = new FileOutputStream("e:11.qsv"); while((fs.read(b))!=-1){ fo.write(b); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ try { fo.close(); fs.close(); } catch (IOException e) { e.printStackTrace(); } } }