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();
            }
        }
    }
}