JAVA（IO流）文件复制

 package com.am;

 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;

 public class TuPian {

     public static void main(String[] args) {
         FileInputStream f1 = null;
         FileOutputStream f2 = null;
         try {
             f1 = new FileInputStream("E:\\5s.JPG");
             f2 = new FileOutputStream("E:\\6s.jpg");
             byte[] bytes = new byte[1024];
         int len = 0;
         while ((len=f1.read(bytes))!=-1) {
             f2.write(bytes,0,len);
         }
         } catch (IOException e) {
             e.printStackTrace();
         }
         if (f1!=null) {
             try {
                 f1.close();
             } catch (IOException e) {
                 // TODO Auto-generated catch block
                 e.printStackTrace();
             }
         }
         if (f2!=null) {
             try {
                 f2.close();
             } catch (IOException e) {
                 // TODO Auto-generated catch block
                 e.printStackTrace();
             }
         }
     }
 }